Check valve - Wikipedia

A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of

PDF SWING CHECK VALVES - Kennedy ValvePDF

Check to see that all valve joints and pressure containing bolts are tight. Leave the valve exposed while the pipeline is being pressurized. Rel.6/18/ Page 4 KENNEDY VALVE Plant and Industrial Group 1021 East Water Street Elmira, New York 14901 Telephone (607) 734-2211 Fax (607) 734-3288 CHECK VALVE RECOMMENDED STORAGE AND HANDLING

PDF Check valve - Robert Bosch GmbHPDF

Check valveS 3/8 RE 20378, edition: 2016-08, osch Reroth AG Technical data (For applications outside these parameters, please consult us!) general Sizes NG 6 8 10 15 20 25 30 Weight kg 0.1 0.2 0.3 0.5 1.0 2.0 2.5 hydraulic

Vickers Check Valves

check valve Unloading relief valve Discharge to tank Pressure adjustment Free flow Free Flow. 6 Right Angle Check Valves Right Angle Type Valve Port Size 00 – 1/4” NPT 05 – 3/8” NPT or.7500-16 UNF-2B (.500 tu ) 15 – 3/4” NPT or 1.0625-12 UNF-2B (.750 tu ) 20 – 1” NPT

Check-All Valve Catalog

Design Features — The complete line of Check-All® valves are in-line spring-loaded poppet-type check valves. Many series are available to provide check valves for practically every service application. Check-All® valves are available with metal to metal or soft seats. Sizes range from 1/8” NPT to 20 inch flange connections.

PDF Check Valves (C Series) - ValinOnline.comPDF

detectable flow is measured. range would be 16 to 20 psig (1.10 to 1.38 bar). Check valves Re-seal pressure is defined as the downstream pressure at which the having springs with rated crack pressures of 3 psig (0.21 bar) or check valve closes bubble-tight. less may require up to 4 psig (0.28 bar) back pressure to re-seal bubble-tight.

Check Valves | Cla-Val

CHECK VALVES. Water & Wastewater Applications. Series 580 - Silent Wafer Check Valve. • Operates Horizontally or Vertically.

PDF Parker Check Valves, Filters and Relief Valves CatalogPDF

Parker C Series Check Valves are designed for uni-directional flow control of fluids and gases in industries such as chemical processing, oil and gas production and transmission, pharmaceutical, pulp and paper, power and utilities. Flow Calculations with 1000 psig (69 bar) Inlet Pressure Valve Series Maximum C V Pressure Drop

Fundamentals Of Valves

Fundamentals Of Valves Course# ME201 EZ-pdh.com Ezekiel Enterprises, LLC 301 Mission Dr. Unit 571 New Smyrna Beach, FL 32128 386-882-EZCE(3923)

DFT Check Valve Catalog V4

Each of these DFT check valves addresses the particular needs of today's customer. DFT's objective is to diagnose check valve problems, provide solutions and 

PDF Swing Check Valves - EveryvalvePDF

Swing Check Valves Description: Bolted cover check valves Swing type Non-return BS1868 API6D ASME B16.34 API600 Design Standards: Wall Thickness: Face to Face: End Connection: ANSI B16.10 Raised face Ring type joint ANSI B16.5 ASME B16.47 series A or B BS4504 PN16, 25, 40, 64, etc

Swing Check Valves - Everyvalve

Swing Check Valves Description: Bolted cover check valves Swing type Non-return BS1868 API6D ASME B16.34 API600 Design Standards: Wall Thickness: Face to Face: End

PDF PDC - DFT® IncPDF

FLANGED VALVES The DFT® Model PDC Check Valve. is a silent, non-slam check valve specially designed for use on the discharge side of reciprocating air or gas compressors. It includes a pulse-damping chamber to maintain the disc in the open position during the momentary reductions in flow associated with each cycle of a reciprocating

SWING CHECK VALVES - Kennedy Valve

5. Figure 506 Resilient Hinged Check Valve (Kenflex Check Valve) Rel. 6/18/ Page 4 KENNEDY VALVE Plant and Industrial Group 1021 East Water Street Elmira, New York 14901 Telephone (607) 734-2211 Fax (607) 734-3288 CHECK VALVE RECOMMENDED STORAGE AND HANDLING Whenever possible, Kennedy Valve check valves should be stored inside.

Parker Check Valves, Filters and Relief Valves Catalog

Re-seal pressure is defined as the downstream pressure at which the check valve closes bubble-tight. Example: For a valve with a spring having a rated cracking pressure of 25 psig (1.72 bar), the actual cracking pressure ranges between 20 and 30 psig (1.38 and 2.07 bar). The re-seal pressure range would be 16 to 20 psig (1.10 to 1.38 bar).

PDF APCO CSC SILENT CHECK VALVES - DeZURIK, Inc.PDF

The Silent Check Valve was designed to open at approximately ¼ to ½ psi (2-3 kPa). This means that when a pump is shut down, a Silent Check Valve will completely close while there is still positive head on the inlet side of approximately ½ psi (3 kPa). In this simple manner reverse flow, which is a major cause of water hammer, is prevented.

PDF Duo-Chek High Performance Check Valves - AIV IncPDF

Duo-Chek Valves Duo-Chek high performance non-slam check valves are the original Mission wafer check valves introduced to the market in the late 50's. They are available in the sizes, pressure classes and configurations you need to meet the most demanding of applications. Our product range includes, but is not limited to, • Sizes: 2" to 72"

PDF Design and Selection of Check Valves - Val MaticPDF

A Ball Check Valve consists of a threaded or flanged body with internal features that guide a rubber‐coated ball in and out of the seat as the flow goes forward and reverse. The ball rolls during operation and has a tendency to clean itself. The valve's top access port provides ease of maintenance without removal of the valve from the line.

swing check Valves - Mueller Co

Ductile Iron Valve Body. • Two-part liquid epoxy coating for removing valve from line. Product Features swing check Valve. Reliable ConnectionsTM.

Catalog MSG14-3300/US Check Valves Series C General

Series C check valves permit free flow in one direction, and dependable shut-off in the reverse direction. Operation When pressure going through the valve is increased to the cracking level, the valve opens. When the pressure is reduced to below the cracking level, the valve closes. Features • Stainless steel poppets standard.

Gate, Globe & Check Valves

Check Valve BS 1868* API 603 Gate Valve API 603 ASME B16.34 Gate, Globe, Check Valves ASME B16.34 ASME B16.34 Face-to-face / End-to-end dimension ASME B16.10 End Flange dimensions ASME B16.5** Butt-weld End dimensions ASME B16.25 Valve Inspection & Testing API 600, API 598, BS 6755 Part I 20 L&T Cryogenic Valves L&T Cryogenic Gate & Globe Valves