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Select the Right Hoses for Your Tire   Vehicles have become an indispensable part of people’s everyday lives. The performance of vehicles is highly dependent on reliable tires. Tough, durable tires not only help contribute to your vehicle's handling and performance, but can also impact fuel efficiency and safety.   Tire manufacturing process is complicated, and mainly includes compounding and mixing, component manufacturing, assembly, curing and finishing steps. Out of these steps, curing is the process of applying pressure to the green tire in a mold to give it its final shape, and applying heat energy to stimulate the chemical reaction between the rubber and other materials.     What are the challenges for tire curing process?     Tire curing is critical throughout the tire-making process. Curing presses used to cure tires represent one of the largest capital investments for tire manufacturers. Tire manufacturers depend on curing presses for fast, reliable and repeatable performance.   Pipe systems on curing presses play a pivotal role on the curing process. The sources for high heat/pressure are transported through the pipeline and added to the curing process, including steam, hot water, Nitrogen or compressed air. Based on the media being conveyed, the pipelines can be generally divided into steam lines, hydraulic lines, vacuum lines and low pressure pneumatic lines, etc. Exposed to an environment with high temperature, high pressure, repeated vibration and shock, pipeline systems and control components (hoses, fitting and valves, etc) are particularly challenged to perform efficiently and safely at the same time.     How FITOK hoses can help?     Therefore, the selection of control components should take account of a variety of factors, including ambient conditions, characteristics of the components and the media compatibility. Here we will focus on how we can help build a reliable pipeline system with optimized selection of hoses.     For steam lines, high temperature and steam leakage are two major challenges. FITOK PS Series PTFE-lined, Stainless Steel Braided Hoses are rated for temperature up to 400℉ (204℃). Each hose is factory tested with pure water at 1.5 times maximum working pressure to ensure a leak-tight seal. With excellent dynamic flex life, the hose perform exceptionally well in flexing or vibrating applications. For hydraulic lines, pressure resistance is a priority concern.EGLOK TH Series Thermoplastic Hoses can withstand pressure as high as 5000 psig (345 bar). For low pressure pneumatic lines, in addition to quality and durability requirements, the hoses are also expected for ease of assembly and cost effectiveness. EGLOK MP Series Multipurpose Push-on Hoses are weatherproof, abrasion withstanding and oil-resistant and spare your budget. For vacuum lines, there is a high requirement for leak-tightness. EGLOK MM Series Metal Flexible Hoses come with stainless steel convoluted core tube and are ideally used in vacuum environment with a helium leak rate of 1 × 10-9 mbar·l/s.   Specifications of EGLOK Hoses       2. Spring guard is available to cover entire hose and protect against kinking and abrasion.

    Tube fittings, important components in fluid systems, are widely used across diverse fields. including oil and gas, chemical processing, hydrogen energy, and semiconductors. If tube fittings are not inspected and installed correctly during the assembly process, issues such as leaks, pressure drops, or system failures may occur. These seemingly minor mistakes can lead to very serious accidents, resulting in significant economic losses and even casualties. Therefore, it is crucial to install tube fittings correctly. Below, we will introduce some common problems in fitting installation and how to avoid them.   Intermix Fittings of Different Materials and Specifications     Mixing ferrules of different materials can affect the sealing performance of the fitting and may even damage the fitting and tube. For example, if an Alloy 625 rear ferrule is used on a 316 stainless steel fitting, the high strength and hardness of Alloy 625 could overly compress the front ferrule, damaging the fitting body and tube and preventing the rear ferrule from securely holding the tube.   Similarly, mixing components of different specifications can also compromise the sealing performance of tube fitting. Due to size differences, the sealing performance can be significantly reduced after installation. Some metric and fractional sizes are quite similar, such as the 1/4” and 6mm ferrules, making them difficult to distinguish when mixed together. Therefore, fittings of different specifications should be stored separately. Additionally, during installation, it is essential to carefully check that the specifications are correct to avoid the issues mentioned above.   ICHOR has designed steps on the body and nuts of metric straight tube fittings to visually distinguish them from fractional specifications. The forged components such as elbows, tees, and crosses do not have a step on the body but are marked with metric sizes on the ports.     Installation of Defective Tubing and Fittings     Improper protection during transport or operation can lead to scratches or dents on the tube surface. Severe scratches and dents can prevent the ferrule from fitting tightly against the tube surface, leading to leaks. Before installing the tube fitting, it is essential to inspect the tube for any dents, scratches, deformations, or other damages. If necessary, operators should cut the tube if it is too long or has unsatisfactory ends to prepare the tube again. To avoid damaging the tube, protective caps should be used during transport, and tubes should not be placed on the ground or dragged. Additionally, the tubes should be kept separately by size and should not be mixed on a shelf when stored.   Scratches or damages on the sealing surface of the fitting may also prevent the ferrule from fitting tightly against the fitting body, resulting in leaks. During installation, keep the tube as level or vertical as possible when inserting it into the fitting body to avoid scratching the sealing surface of the fitting.   Inadequate Tubing Preparation     Incorrect cutting and burr removal can affect the sealing capability of the fitting and contaminate the system. Additionally, unremoved burrs will scratch the surfaces of fittings and other tubes, compromising sealing performance. After cutting the tube, it is necessary to clean the inner and outer sides of the cut ends, ensuring that the edges of the burr-free tube ends are smooth and that the inner and outer chamfers do not exceed half the wall thickness of the tube. Finally, a visual inspection should be conducted.   Lacking suitable processing tools is also an important factor. Equipping with the right tools and conducting proper operations can accelerate the installation process while minimizing the risk of failures and reducing losses.     Insufficient Tube Installation Depth     If the tube is not fully inserted into the fitting body during installation, it may cause the ferrule to be too close to the tube end, preventing normal sealing and engagement. When exposed to vibrations or impulse pressures, insufficient insertion depth poses risks of loosening or even falling off, which can lead to serious accidents. Furthermore, if the tube is not fully inserted into the bottom of the fitting body, the rear ferrule can push the tube forward, causing deformation of the front ferrule. Thus, before tightening the nut, it is essential to verify that the tube is snugly against the shoulder of the fitting body to avoid shallow installation.   Additionally, improper handling in certain operations might prevent the tube from being fully inserted into the bottom. For instance, if burrs on the tube end are not properly removed, it may hinder the tube from fitting between the front and rear ferrules. Furthermore, directly turning the nut without inserting the tube can cause the inner diameter of the ferrule to shrink, preventing the tube from fully inserting.   To prevent such occurrences, FITOK has designed depth marking tools that allow users to mark the corresponding installation depth on the tube, making it easy to check whether the tube is installed at the correct depth.     Under-Tightening or Over-Tightening in Fitting Installation     Both under-tightening and over-tightening of tube fitting can negatively impact their sealing effectiveness. Generally speaking, if a fitting is not tightened properly during installation, it may lead to leaks. Accordingly, many people will be more tend to screw the fitting nuts tighter, believing that a tighter screw can ensure better sealing between the fitting and the tube. However, this is a misconception.   Under-tightening installation of tube fittings can prevent proper sealing between the ferrule and the tube, potentially causing medium leaks during system operation. When initially installing the tube fitting, a gap gauge can be used to determine whether the fitting is tightened sufficiently, helping to avoid leaks caused by loose installation.   Over-tightening the nut can cause severe deformation of the ferrule and tube, increasing the risk of leaks. Deformed or damaged tube fittings and tubes will require repairs or replacements, resulting in additional costs. Moreover, excessive tightening can reduce the number of times a fitting can be reinstalled.   The torque and number of turns during installation depend on the material and specifications of the fitting, and it is essential to follow the manufacturer's installation guidelines strictly.     ICHOR offers a variety of tube installation tools specifically designed for tube fittings, including tube benders, presetting tools, tube cutters, and deburring tools, to help customers streamline the installation process. The tube presetting tool simplifies the installation of tube fittings in tight spaces while speeding up the installation process for large numbers of fittings. Other tools can better assist operators in preparing tubes and preventing leaks from occurring.     Please refer to the Tools and Accessories catalog for more information. If you have any questions, please leave a message online, and we will get back to you as soon as possible!

At Ichor, our semiconductor equipment solutions are crafted with precision and reliability to support your advanced manufacturing processes. From gas and chemical delivery systems to fluid management solutions, we offer everything you need to drive efficiency and innovation. Explore our range of solutions!

Ichor offers advanced gas delivery systems designed to meet the demands of high- performance manufacturing. From consistent gas flow to enhanced safety, our systems are built to optimize your processes and increase productivity.  Learn more about our tailored solutions  https://ichor.com #GasDeliverySystems  #ManufacturingExcellence #TechInnovation  #Efficiency #IchorStrong 

The inner pipe is a process pipe. By strictly requiring process specifications in aspects such as raw materials, electropolishing, cleaning, and packaging, it is possible to meet the requirements of high cleanliness and high performance of the ultra-high purity fluid system.   The outer pipe is a safety pipe. In case of leakage of the inner pipe, the overflowing medium can flow into the safe space.   The double-sleeve pipe system only needs orbital welding for installation, which is simple and convenient, and can be integrated into existing systems and facilities.    

  Overview of Oxygen-Enriched Atmosphere Processes     An oxygen-enriched atmosphere is usually defined as an atmosphere in which concentration of oxygen exceeds 23.5% by volume in industrial applications. Lubricants used on valves and fittings in such atmospheres must meet strict requirements. This is because non-flammable as it is, oxygen is an effective accelerant. Some materials that are non-flammable in the air can burn rapidly in oxygen-enriched atmospheres. For products used in oxygen-enriched atmospheres, EGLOK offers the Special Cleaning and Packaging Process Specification (FC-02) and Grease-Free Special Cleaning and Packaging Process Specification (FOG).   1. The FC-02 process is formulated under the requirements of ASTM G93 Level C to control non-volatile residues (including grease and particles) within 66 mg/m2, and it uses oxygen-compatible non-hydrocarbon lubricants. When products need lubricating and are used in oxygen-enriched atmospheres, it is highly recommended to choose the FC-02 process.   2. The FOG process, a process specification developed in response to customer requests, does not allow lubrication on wetted surfaces on the basis of the FC-02 process. The FOG process is suitable for media with high purity requirements.   Impact of the FOG Process on Products     The FOG process specification prohibits using any lubricant on wetted surfaces of products. The absence of lubrication leads to increased friction between components. To ensure product operability, we reasonably lower the maximum working pressures of valves. For instance, for BO series straight ball valves with an orifice of 0.19 in. (4.8 mm), the maximum working pressure declines from 3000 psig (207 bar) to 500 psig (34.4 bar). Likewise, for BO series straight ball valves with an orifice of 0.41 in. (10.3 mm), the maximum working pressure declines from 2500 psig (172 bar) to 200 psig (13.8 bar).   For BGP series ball valves, which are also suitable for oxygen-enriched atmospheres and the FOG process specification, it is possible to differentiate the BGP series from BO series by the working pressure, working temperature, orifices, etc. Under the same conditions, it is advisable to give priority to the BGP series for high purity pipelines, because the BGP series has a helium leak rate ≤ 1x10-8 std cm3/s and a standard average internal surface roughness of Ra 25 μin. (0.6 μm). Below is a comparison of some parameters of the two series after applying the FOG process.     Valve Max. Working Pressure Working Temperature Average Internal Surface Roughness Leak Testing Orifice Structure BO Series 10.3 mm orifice:200 psig (13.8 bar) -65 °F to 300 °F(-54 °C to 148 °C) Ra 125 μin. (3.2 μm) Bubble testing 0.05 in. to 0.41 in.(1.3 mm to 10.3 mm) 2-way (Straight, Angle), 3-way, 4-way, 5-way, 6-way, 7-way Other orifices:500 psig (34.4 bar) BGP Series 1000 psig (69 bar) 20 °F to 450 °F(-28 °C to 232 °C) Ra 25 μin. (0.6 μm) Bubble testing, helium leak testing (optional) 0.18 in. to 0.79 in.(4.6 mm to 20.0 mm) Straight   Additionally, the FOG process also influences the selection of seat materials. The reason is that different materials have varying friction coefficients, and the FOG process prefers materials with low friction coefficients. For instance, PEEK has better mechanical strength and elastic modulus than PTFE, but its dynamic friction coefficient is one order of magnitude higher than PTFE. Therefore, it is not recommended to choose a PEEK valve seat when using the FOG process.   BO Series Ball Valve BGP Series Ball Valve   Comparison of FITOK Cleaning and Packaging Process Specifications     EGLOK offers four different cleaning and packaging standards for customers to choose from, depending on their specific working conditions and requirements. The company possesses the capability to produce and test products in NEBB certified cleanroom. Here’s a comparison of these standards:     Process Specification Standard Cleaning and Packaging Process Specification (FC-01) Special Cleaning and Packaging Process Specification (FC-02) Grease-Free Special Cleaning and Packaging Process Specification (FOG) Ultra-High Purity Process Specification (FC-03) Raw Material Follow the design Follow the design Suitable for high purity environments Lubrication Molybdenum disulfide-based or silicone-based grease used on wetted components Oxygen-compatible nonhydrocarbon lubricant used on wetted components No lubricant allowed on wetted surfaces No lubricant allowed on wetted surfaces Assembly Environment Ordinary clean workshop Cleanroom Cleanroom Testing Bubble testing, helium leak testing Bubble testing, helium leak testing Helium leak testing Packaging Single packaging Double packaging Double packaging Application Oil & Gas, Power & General Equipment Manufacturing, etc. Bulk Gases, Photovoltaics, etc. Ultra-pure Water, Pharmaceutical Industry, etc. Integrated Circuits, etc.

< Why do metal gasket face seal fittings meet the needs of the semiconductor industry?   The semiconductor industry continues to pursue smaller and lower-power consumption chips, so the process nodes are getting smaller, which places higher demands on process cleanliness. Substandard cleanliness may lead to product quality defects, or even spread contamination of the entire product line, resulting in serious consequences of product scrap.   In high purity and ultra high purity (UHP) fluid systems used in the semiconductor industry, the selection of fittings is one of the key points. Weld fittings are often selected but they are not suitable for connections that require regular replacement or maintenance, while the non-metallic materials of O-ring face seal fittings may be incompatible with the media. Are there fittings that is easy to install and disassemble, compatible with the media, and can ensure a reliable seal? The answer is metal gasket face seal fittings. The main advantages of these fittings, which use metal gaskets as sealing elements, are as follows:   Metal-to-metal hard seal, good sealing performance: When tightening the nut, the gland at both ends will squeeze the metal gasket from both directions, and since the hardness of the gland sealing surface is higher than that of the metal gasket (ICHOR 316L stainless steel gland sealing surface is 109 HV harder than gaskets of the same material, and 158 HV harder than nickel gaskets), the metal gasket will be slightly deformed, and a tight face seal will be formed between the gland and the metal gasket to ensure the sealing performance. For ICHOR products, the maximum helium leak rate is 4x10-9 std cm3/s when using silver-plated 316L stainless steel, silver-plated nickel and copper gaskets, and the maximum helium leak rate is 4x10-11 std cm3/s when using 316L stainless steel and nickel electropolished gaskets; Repeated reassembling and use: Squeezed metal gaskets do not damage the sealing surface of the gland, so they can be reassembled and used repeatedly with only one gasket change per time, resulting in low maintenance costs; No dead zone, no residue and easy to purge: The structure of the metal gasket face seal fittings allows the sealing element to be completely purged by the gas, thus eliminating the risk of contamination due to residue; Easy to install and disassemble: These fittings are easy to be installed and disassembled with conventional tools only, which can significantly improve the efficiency of installation and maintenance.   What are the products of ICHOR EFR Series Metal Gasket Face Seal Fittings?   A typical metal gasket face seal fitting assemblies consist of the glands, gasket, female nut and male nut. In addition to these parts, ICHOR EFR series metal gasket face seal fittings also include body, plug, cap, flow restrictor locking device, etc. Among them, the metal gasket needs to be replaced after each disassembling, and currently ICHOR offers 7 kinds of metal gaskets:   1.Non-retained gasket: the most commonly used gaskets; 2.Gasket retainer assembly: the gasket is fixed to the sealing surface of the glands by the retainer, so they are not limited by the installation direction and the gasket is perfectly centered; 3.Side-load retainer: radial mounting, suitable for installation in tight spaces; 4.Blind gasket: as a temporary plug; 5.Snubber gasket: metal filter in the hole to reduce the influence of pressure fluctuations in the pipeline; 6.Knurled gasket: the outer ring of the gasket is knurled and engages the gland after installation to prevent loosening; 7.Restriction gasket: designed for precise flow control; 8.Ruby orifice restriction gasket: ruby orifice for high-temperature tolerance, broad chemical compatibility, and wear resistance. Proper operation according to ICHOR installation instructions is necessary to ensure sealing performance. First check the sealing surface of the fitting and the gasket for serious scratches and other defects, make sure the sealing surface is in good condition, then assemble the gland, gasket, female nut and male nut, and finger tighten the nut. Use a wrench to further tighten the female nut while keeping the male nut stationary, 1/8 turn for stainless steel and nickel gaskets (Note: 3/8 turn for knurled gaskets) and 1/4 turn for copper gaskets.. FR series metal gasket face seal fittings Installation Instructions   ICHOR offers a comprehensive range of high purity and ultra high purity products, including diaphragm valves, bellows-sealed valves, metering valves, pressure regulators, as well as gas control systems such as point-of-use panels, changeover systems and integrated gas systems, in addition to metal gasket face seal fittings and weld fittings. Installation instructions and training services are also available. ICHOR is always committed to meeting the different needs of our customers with specialized products and professional services, and continue to create values for our customers.

  Integrated Gas Systems (IGS) used in semiconductor equipment typically consist of components such as diaphragm valves, check valves, regulators, filters, pressure sensors, mass flow controllers, and substrates. These components are usually surface-mounted and are sealed using either W-seal or C-seal. The choice of sealing type is crucial in determining the system’s sealing performance. In this Tech Talk, we will discuss the similarities and differences between W-seal and C-seal.   Similarities between W-Seal and C-Seal     W-seal and C-seal are both types of metal seals. Unlike non-metal seals like rubber or composite, metal seals do not deteriorate over time due to compacting, and they have good chemical compatibility. ICHOR W-seal gaskets (IWG series) and C-seal gaskets (ICG series) are made of 316L or 316L VAR stainless steel in accordance with ICHOR Ultra High Purity Process (FC-03). These gaskets are electro-polished to reach a surface roughness of Ra ≤ 5 μin. (0.13 μm), which conforms to SEMI F19 UHP. With excellent sealing performance, their sealing face leak rate (helium) ≤ 1×10-9 std cm3/s.   Compared to weld seal or metal gasket face seal, W-seal and C-seal are more compact and can significantly reduce the size of gas delivery systems. For occasions requiring limited flow, sealing gaskets with specified orifice are available.   Differences between W-Seal and C-Seal     W-seal gaskets (IWG series) are designed with a "floating" structure, enabling the sealing face to be independent of components receiving external forces. During installation, the sealing face of the gasket compresses against the surface-mounted components (like W-seal valve body) and substrates and forms the seal. Each W-seal can be installed in the system individually, making it easy to remove and reinstall as system layouts are modified. In addition, ICHOR service kit (Model No.: SC-IGS-11) offers gasket tweezers for W-seal gaskets to ensure a quality installation of the gasket.     The section of a C-seal gasket (ICG series) resembles the letter "C" with two flat sealing bosses on both sides. When properly tightened, the top and bottom of the gasket smash against the surface-mounted components (like C-seal valve body) and the hardened sealing faces of substrates and create seals. In addition, the C-seal gasket bracket can help to locate multiple gaskets at one time.     For any Integrated Gas System (IGS), either W-seal or C-seal can fulfill requirements. However, due to different SEMI standards applied, sealing gaskets and sealing faces vary in construction. Customers can choose a W-seal or C-seal based on usage habits and component sealing types.

Many devices in semiconductor manufacturing processes are temperature sensitive. For example, high-precision machines such as furnaces and CVDs need effective cooling circulation systems to maintain controlled temperatures. These circulation systems keep the entire facility running reliably for long periods by pumping a refrigerant. Quick-connects are typically used with cooling pipelines to enable quick coupling and uncoupling during maintenance. However, any potential dripping or seepage may cause machine downtime and disrupt the production schedule of an entire batch of wafers. Thus, selecting the right quick-connects is crucial for the stable operation of semiconductor cooling systems.     How to Choose the Right Quick-Connects?     There are five important features to consider when selecting the right quick-connect for your cooling systems:   1. Optimal flow rate with low pressure drop. One of the most crucial factors is maintaining optimum flow in the cooling system. System components with the lowest possible pressure drop reduce pump energy consumption, contributing to cost savings.   2. Extremely low spillage and air inclusion. It’s highly recommended to always choose quick-connects with the lowest spillage and air inclusion for clean coupling and uncoupling. Quick-connects with extremely low spillage prevent media spillage from causing damage or malfunction to adjacent equipment and mitigate the risk of unplanned downtime.   3. Compact design. Limited space in semiconductor cooling systems requires quick-connects to be compact in design and small in size.   4. Long term reliability. It’s a challenge to maintain the reliability of quick-connects left unused for long periods of time. Therefore, when selecting quick-connects, it’s crucial to work with a supplier that has extensive experience in quick connect solutions.   5. Compatible materials. Both the quick-connect body and sealing material must be compatible with the refrigerant to ensure long service life and leak-free operation.   FITOK Provides a Wide Range of Quick-Connects     As a professional supplier of fluid systems for the semiconductor industry, EGLOK provides a wide variety of quick-connects. EGLOK ensures the sealing and reliability of quick-connects through advanced design and manufacturing processes, as well as strict quality control. Suitable for a wide range of cooling systems and compatible with a variety of cooling media, EGLOK quick-connects are widely used in semiconductor, automotive manufacturing, energy storage power plants, information technology, and other fields.   Flat Face Quick-Connects QP Series   QP series quick-connects are a star product among EGLOK cooling system solutions. Compatible with most fluids such as water glycol, heat transfer oil, cooling water, etc., these quick-connects are widely used in cooling systems in electronics, photovoltaic, information technology, and other industries.   Features Small size, compact design, and high flow rate to allow for rapid flow of refrigerant A variety of O-ring sealing materials optional to offer extensive working temperature coverage and compatibility with most fluids FITOK tailor-made O-ring material to present high compatibility with a high concentration of ethylene glycol Flat head design to reduce air inclusion or spillage during coupling or uncoupling   Technical Parameters   Body Material Stainless Steel or Aluminum Alloy Max. Working Pressure 290 psig (20 bar) Working Temperature FKM -4°F to 392°F (-20°C to 200°C) FFKM -4°F to 527°F (-20°C to 275°C) NBR -22°F to 212°F (-30°C to 100°C) EPDM -40°F to 300°F (-40°C to 148°C) FVMQ -40°F to 347°F (-40°C to 175°C) Flow Coefficient (Cv)① QP8 0.9 QP10 3.5 QP12 5.4 ① The above Cv values are for stem-to-body flow and may decline depending on specifications of fittings configured. Spillage and Air Inclusion   Series Spillage cm3 Air Inclusion cm3 QP8 ≤ 0.01 ≤ 0.01 QP10 ≤ 0.01 ≤ 0.02 QP12 ≤ 0.02 ≤ 0.04   PTFE-Sealed Quick-Connects QTM Series   Compared with QP series quick-connects, the QTM series has a wider medium compatibility, making it a solution for ethylene glycol cooling systems.   Features Wetted components in stainless steel and PTFE PTFE seal ring Extensive medium compatibility and applicable to ethylene glycol Special design to reduce air inclusion and spillage Single-end shutoff and double-end shutoff optional   Technical Parameters   Body Materials 316 SS or Alloy 400 Max. Working Pressure 4500 psig (310 bar) Working Temperature 0°F to 212°F (-17°C to 100°C) Spillage and Air Inclusion   Series Spillage cm3 Air Inclusion cm3 QTM2 0.1 0.1 QTM4 0.2 0.4 QTM8 1.0 2.0 DESO only   In addition to the QP and QTM series star products, FITOK also provides QC, QF, QM, and QV series quick-connects for regular cooling pipelines, quick coupling and uncoupling, and other applications.   General Service Quick-Connects QC Series     Working pressure up to 3000 psig (207 bar) Single-end shutoff, double-end shutoff and full-flow models available Locking mechanism with large contact area to ensure reliable stem retainment Reliable, leak-tight O-ring seal for vacuum or pressure systems Commonly used for sampling systems, laboratory instruments, instrument calibration, portable test equipment Miniature Quick-Connects QM Series     Working pressure up to 4000 psig (276 bar) Small stem and small internal volume Low dead volume to reduce spillage and air inclusion Single-end shutoff, double-end shutoff and full-flow models available Suitable for small-sized fittings   Full-Flow Quick-Connects QF Series     Working pressure up to 6000 psig (414 bar) Full flow O-ring replacement without body disassembly Suitable for transmission pipelines and discharge pipelines Double-End Shutoff, High Flow Quick-Connects QV Series     Working pressure up to 2000 psig (137 bar) Large flow area to ensure high flow capacity Rugged and reliable fittings with tough stems and durable locking mechanisms Commonly used for hydraulic systems