Products/Services for Zero Cracking Pressure Check Valve
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Check Valves - (1952 companies)The mechanics of check valve operation are relatively simple. Most check valves contain a ball that sits freely above the seat, which has only one through-hole. The ball has a slightly larger diameter than that of the through-hole. When the pressure behind...Valve TypeSevere Service RatedBack Flow Preventer Assembly -
Pressure Relief Valves - (1007 companies)...of the system. Relief valves are designed to continuously regulate fluid flow, and to keep pressure from exceeding a preset value. There are a wide variety of valve designs, but most resemble diaphragm valves, globe valves, or swing check valves... -
Hydraulic Valves - (684 companies)Hydraulic valves contain and transfer the flow and pressure of hydraulic fluid in hydraulic power systems. They range from simple shutoff valves to precision control valves. In their unpowered state, hydraulic valves can be normally open (open... -
Control Valves - (1646 companies)Control valves or proportional valves are power-operated devices used to modify fluid flow or pressure rate in a process system. Control valves are power-operated devices used to automatically modify fluid flow or rate pressure in a process system... -
Gas Valves - (535 companies)Gas valves are used to handle and control the flow of gaseous media such as liquefied petroleum and natural gas. They are made of metal or plastic and vary in terms of valve size, pressure rating, number of ports, and flow. Gas valves are flow... -
Ball Valves - (2115 companies)...for chemical or non-sterile applications. See GlobalSpec's Valve Application and Valve Standards pages for more information. Features. Ball valve manufacturers have ball valves available with several different features to fit an application. Swing check...
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Pressure Regulators - (1232 companies)...changes the force on the sensing elemen,t which then further adjusts the force on the control element, causing it to move away from or towards the pressure regulator 's valve seat. In turn, the orifice becomes larger or smaller in order to provide...
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Butterfly Valves - (1270 companies)...in large sizes. Unguided disc movement is affected by flow turbulence. Low pressure drop and high-pressure recovery. High coefficient of flow. Butterfly valve. Video Credit: Charles Lonon / CC BY-SA 4.0. Classification. Industrial Valves can...
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Globe Valves - (794 companies)Directory of Suppliers. Advantages. Disadvantages. Can be fast-acting. High head loss. Precise control. Large opening for disk assembly. Can be used in high-pressure systems. Heavier than other valves. Cantilevered mounting of the disk to the stem. Low...
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Pressure Sensors - (1185 companies)...output signal, such as 0-5VDC does not offer constant feedback at zero pressure because the controller is unaware if the system is operating or if there is a problem. HART Protocol. Analog current levels or transmitters such as 4 - 20 mA are suitable...
Product News
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Beswick Engineering Co., Inc.
Check Valve, Miniature, Low Cracking Pressure Beswick 's miniature brass and stainless steel check valves (CKV) are ideal for instruments requiring a low cracking pressure (less than 0.5 psid). This ultra-miniature low cracking pressure check valve permits free flow in one direction and no (checked) flow in the opposite direction. In addition to the low cracking pressure, the valve has excellent repeatability, and leak-tight operation. These check valves are designed with an elastomeric duckbill and can withstand up to 250 psid (read more)Browse Check Valves Datasheets for Beswick Engineering Co., Inc. -
Lee Co. (The)
281 Zero Leak PRI® Pressure Relief Valve The 281 Zero Leak PRI (R) is a new pressure relief insert for thermal relief and low flow hydraulic pressure relief applications where zero leakage is needed. Weighing only 6 grams, typical flow rates range from a few mL's per minute for thermal relief applications, and up to 0.5 GPM for low flow pressure relief applications. Working temperature is -65 F to +275 F and the cracking pressure is preset at the factory with capabilities ranging from 800 psid up to 4700 psid. Each Zero Leak PRI... (read more)Browse Pressure Relief Valves Datasheets for Lee Co. (The) -
Shenzhen Jewellok Technology Co., Ltd.
High Pressure High-Purity Check Valve Product Features. * Compact designed check valves. * EPDM O-ring are standard (option: Viton (R) ). * Pressure rating: 206 bar. Typical Applications. * Designed for instrumentation panels and systems. Technical Data. Working pressure?. 206 bar. Cracking pressure?. 1 psi. Body material?. see ordering info. Inlet / Outlet connection?. see ordering info. O-ring?. EPDM standard. Leak rate?. Bubble-tight (read more)Browse Check Valves Datasheets for Shenzhen Jewellok Technology Co., Ltd. -
O'Keefe Controls Co.
Mini Ball Type Check Valves Excel in High Pressure When preventing unwanted reverse flow is required in small and miniature high-pressure applications, O'Keefe Controls Co. Ball Type Check Valves are an ideal choice. Rather than utilizing an elastomeric seat -- as in our disk type check valves -- the ball style uses a metal-to-metal seat, thus expanding the pressure rating substantially. These versatile check valves are available in many configurations, and with or without springs. Having a return spring introduces cracking pressure (minimum... (read more)Browse Check Valves Datasheets for O'Keefe Controls Co. -
Lee Co. (The)
LEE CHECK VALVES The Lee Company manufactures a wide variety of miniature, pre-tested cartridge check valves that offer proven reliability and performance. With almost one million valves successfully in service, some for over 20 years, Lee check valves set the standard for small size, light weight and proven reliability. Four types of miniature check valves are available: Axial Flow Check Valves. Side Exit Check Valves. Zero Leak Check Valves. Pilot Operated Check Valves. Axial Flow Check Valves. Lee Chek (R) O... (read more)Browse Check Valves Datasheets for Lee Co. (The) -
DeZURIK, Inc.
Tideflex® Check Valves for Backflow Prevention Introducing the Tideflex (R) Duckbill Check Valve - the gold standard in backflow prevention. With an unrivaled reputation, Tideflex (R) Duckbill Check Valves boast a low cracking pressure, effectively eliminating standing water while maintaining minimal head loss. Constructed entirely from elastomer, they're impervious to warping or freezing, and corrosion is a thing of the past. What sets Tideflex (R) Duckbill Check Valves apart is their self-operating design, relying solely on line pressure... (read more)Browse Check Valves Datasheets for DeZURIK, Inc. -
Lee Co. (The)
Cryogenic Check Valve The Cryogenic Check Valve incorporates fitting ends per AS standards, making it easy to integrate into existing systems. The valve 's materials were carefully selected for their compatibility with hydrogen and other fluids used at cryogenic temperatures. In addition, the valve 's adaptable construction supports material changes to suit a wide range of environments. Key Features of the Cryogenic Check Valve: Temperature range: -320 F to 275 F. Pressure rating: up to 5000?psi. Leakage: <10?SCCM... (read more)Browse Check Valves Datasheets for Lee Co. (The) -
Beswick Engineering Co., Inc.
3/8 Inch Hex Body, Duckbill Check Valve The new Beswick 3/8 inch hexagonal body check valve (CKV38) provides a low cracking pressure (less than 0.5 psid) along with greater flow capacity than our smaller 5/16 hexagonal body check valves. It is capable of providing a maximum flow rate equivalent to a 5/64 inch (2mm) diameter orifice. The increased flow capability, low cracking pressure, excellent repeatability and leak tight operation can be used to advantage in a wide range of applications. The inlet and outlet ports can be specified... (read more)Browse Check Valves Datasheets for Beswick Engineering Co., Inc. -
DFT Inc.
DFT® compact insert wafer check valve The FBC (R) check valve is an economical, compact, lightweight, insert wafer check valve that easily installs between two flanges. The in-line, spring assisted design prevents "water hammer" and reverse flow". The FBC contains all of the proven features of the Basic-Check valve developed by DFT (R) over 80 years ago. Like the Basic-Check, the metal-to-metal sealing area of the disc and seat is precision lapped providing tight shut-off for applications involving liquids, gases, or steam... (read more)Browse Check Valves Datasheets for DFT Inc. -
O'Keefe Controls Co.
Convenient, Reliable Threaded Insert Check Valves Insert Check Valves in both a spring-loaded ball style or in a free-floating ball style. Many cracking pressure options are offered, and a large range of threads are available. In instances where miniaturization is paramount, threads as small as 6-32 UNC or M3.5 can be used. To prevent spiral leakage, O'Keefe Controls Co. also offers a unique nose seal option. The O-ring seal on the leading end of the check valve can seal effectively against a flat surface, saving time and expense... (read more)Browse Check Valves Datasheets for O'Keefe Controls Co.
