Check Valve
Todays deals on Check Valve?
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AMES DETECTOR CHECK VALVE 10″ 1000 DCV MWWP 175 PSI MANUFACTURED YEAR 1996 $4,500.00 |
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AMES DETECTOR CHECK VALVE 8″ 1000 DCV MWWP 175 PSI MANUFACTURED YEAR 1995 $3,500.00 |
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AMES DETECTOR CHECK VALVE 6″ 1000 DCV MWWP 175 PSI MANUFACTURED YEAR 1993 $2,500.00 |
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Vickers CBG 825 S17 Check Hydraulic Servo Directional Control Valve $1,000.00 |
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Vickers I04S C5G 805 Check Hydraulic Servo Directional Control Valve $1,000.00 |
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Vickers DGMDC-3-Y-AK-41 Hydraulic Servo Direct Check Control Valve $1,000.00 |
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NEW CHECK ALL VALVE 3SC-400-SS-3-V-1/2 SANITARY CHECK VALVE 4″ $789.99 |
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PARKER BA CP-600-S 40N CHECK VALVE NEW BACP600S40N $599.99 |
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3″ 150 PSIG Stainless Steel Check Valve $550.00 |
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Crissair Swing Check Valve 99240, 2S6194 $599.99 |
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PARKER BACP-1200-S40B FREE-FLOW CHECK VALVE ***XLNT*** $549.00 |
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PK 3” 32DF1 28LF2 Swing Check Valve CF8M Size 3 Class 150 $499.95 |
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Flowmatic 2″ Threaded Pressure Reducing & Check Valve $450.00 |
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REXROTH R900328798 PILOT OPERATED CHECK VALVE SANDWHICH PLATE NEW $474.99 |
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Daikin Industries JCP-T03-20-20 JCPT032020 Check Valve $399.00 |
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FLOW CONTROL CHECK VALVE P/N TPCCSL-600-06 $400.00 |
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Conbraco 61-109-01 2-1/2″ Ball Cone Check Valve bronze $400.00 |
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CLA-VAL 1/4″ Check Valve PN 5497484-1 265psi $379.95 |
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BONNEY FORGE 2″ 800 LB STAINLESS PISTON CHECK VALVE $375.00 |
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DFT DURABLA WLC WAFER CHECK VALVE, SERIAL NO: 30702, SIZE 3, CLASS 150/300 $375.00 |
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CHECK VALVE, FLANGED 2″ $370.00 |
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Daikin Kogyo Throttle & Check Valve MT-02B-40_MT02B40_MT-O2B-4O_ORB-M-26-4F $325.00 |
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Ingersoll-Rand BV118874 Valve Check $314.99 |
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Sperry Vickers 4CT-06-A-20 CHECK VALVE PILOT OPERATED $314.99 |
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NEW OIC CHECK VALVES 1 1/2 NPT 45 DEGREE MODEL CF8M – 2 AVAILABLE $299.99 |
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NIB Tokimec Check Valve CHV-4CG06A20GEFJAJ _ CHV4CG06A20GEFJAJ $289.00 |
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Wright Check Control Valve 11137-6 ICN-011987974 NEW $259.95 |
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New Refrigerating Specialties co. Check Valve CK 4A Q 5″OD. $270.00 |
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NEW Milwaukee 4″ Wafer Silent Check Valve 250# 1404-400 $275.00 |
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Crane Duo-Check II 3G12HMP Cast Iron Check Valve NEW $249.99 |
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Crane Duo-Check II 3G12HMP Cast Iron Check Valve NEW $249.99 |
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QTY 1 CHECK VALVE RED VALVE 3″ SERIES 2633 $260.00 |
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NEW PARKER CPOM3BBN CHECK VALVE PILOT OPERATED MANAPAK $250.00 |
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PARKER CPOM3 PILOT CHECK VALVE ***XLNT*** $220.00 |
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NEW Carten Controls CV1375PC2R UHP Brass Check Valve CV 300018-09 CV1375 1.5″ $233.99 |
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MID-WEST 890 TEST KIT DOUBLE CHECK VALVE ASSEMBLY $199.99 |
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MID-WEST 890 TEST KIT DOUBLE CHECK VALVE ASSEMBLY $199.99 |
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1 NEW ROSS 2768C3901 CHECK VALVE Q6-7 $210.00 |
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MID-WEST 890 TEST KIT DOUBLE CHECK VALVE ASSEMBLY $199.99 |
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Swagelok SS-16C-1/3 1/3 psig Poppet Check Valve $212.99 |
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ROSS 2778C4901 CHECK VALVE PILOT-OPERATED 1/2″ 120V NEW $199.99 |
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Victaulic Check Valve S/716, S-716, S716, 300 PSI 09/01, C060716P01, CO6O716PO1 $205.00 |
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Victaulic Check Valve S/716, S-716, S716, PSI 09/01, C040716P01, CO4O716PO1 $205.00 |
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new 2″ Swing Check Valve velan brand Model B A105N Canada 1,975 psi new $170.00 |
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Definox 2″ 316L Pressure & Check Valve $184.99 |
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Definox 1.5″ Pressure and Check Valve $184.99 |
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Entegris 1/4″ Auto valve w/check valve KC-202-69-01 $188.00 |
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NEW TELEDYNE FREE FLOW CHECK VALVE 481-1/2B2-2 48112B22 $179.00 |
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2 NIB PARKER C-SERIES CHECK VALVE 6M6Z-C6L-5-SS $169.00 |
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REXROTH R900463364 HYDRAULIC VALVE CHECK PRESSURE RELIEF SV10 PA1-4XV BOSCH NEW $179.99 |
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Swagelok Model: SS-16C-1 Stainless Steel Poppet Check Valve. 1 PSI $159.99 |
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NEW GESTRA BB C SERIES CARBON STEEL OUTLET CHECK VALVE $149.99 |
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LOT 4 MILLIPORE PRESSURE GAUGE SWAGELOK CHECK VALVE/NEW $149.00 |
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NEW VICKERS RIGHT ANGLE CHECK VALVE C2S-825-S17, # 696244 $149.99 |
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NEW VICKERS/EATON CHECK VALVE C2-825, # 094048 $149.99 |
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CONBRACO 62-103-01 STAINLESS CHECK VALVE LOT 1/2″ 6210301 NEW $160.00 |
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WOODWARD HRT INC. # CHECK VALVE # 41003614-001 3000PSI $159.95 |
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Ball Cone Check Valve 2″ SS 125-S 400-WOG CF8M $147.95 |
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BOSCH 0811-020-030 FLOW CONTROL 0811020030 VALVE BODY CHECK NEW $150.00 |
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NEW AS STROMUNGSTECHNIK CHECK VALVE RV434340 1204222 PTFE 1/2″ X 1/2″ $149.99 |
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3870-00080 – VALVE CHECK INLINE 1PSIG 3/8NPT-F/F 316S $128.00 |
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LOT ASCO WATTS PRESSURE REGULATOR MANIFOLD GAUGE CHECK VALVE 8290A002 2A645 $124.99 |
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CHECK ALL VALVE UR-3-200-B CHECK VALVE 5PSI NEW $130.50 |
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LOT OF 2 CHECK-ALL BU-075 x 050-SS CHECK VALVE NNB $140.00 |
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NEW ROSS 2768C3900 PILOT OPERATED PNEUMATIC CHECK VALVE M9 08 07 $129.00 |
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CHECK ALL VALVES HVFD-150-SS-M-1/2 NSPP HVFD150SSM12 $118.45 |
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New Mueller Steam 4″ Cast Iron Double Disk Check Valve 471AHB3H $135.99 |
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NIB DYNEX DUAL PILOT CHECK VALVE S8642-D03-AB-Y-21 $119.00 |
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1 NIB NUMATICS R30K03G REGULATOR WITH CHECK VALVE Q6-7 $120.00 |
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1 NEW NUMATICS R30K04G REGULATOR W/ CHECK VALVE Q6-8 $119.99 |
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Snap Tite CAC25-25A Pilot CHECK VALVE CARTRIDGE NEW $125.00 |
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MERCOID CONTROLS TYPE 123-2 CHECK VALVE SWITCH CL30 NEW $115.00 |
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MERCOID CONTROLS TYPE 123-3 CHECK VALVE SWITCH CL30 NEW $115.00 |
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ROSS Valve 2773A3939 1-10 bar 26VA 110/50 Solenoid Check Pilot Air Valve NEW * $117.00 |
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Parker Partek CV-1-6688 Check Valve $102.75 |
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New CF 2″ Threaded Horizontal Swing Check Valve NR $127.49 |
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STAINLESS STEEL CHECK VALVE INTEL SURPLUS 1/4 INCH PORT SIZE 233381049 $119.99 |
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NIB GESTRA RK86A SS BODY. C/W SS INTERNALS.CHECK VALVE $109.95 |
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PARKER VCL16F05A VCL16F0A-V-20 CHECK VALVE NEW $111.00 |
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CONTINENTAL HYDRAULIC N5S-OB-G THROTTLE VALVE CHECK ***NNB*** $99.00 |
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NIB DYNEX DUAL PILOT CHECK VALVE S8642-D03-AB-V-21 3000 $89.00 |
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CHECK ALL VALVES HVFD-100-SS-M-1/2 NSPP HVFD100SSM12 $98.90 |
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VALVE DISK, SWING CHECK TYCO VALVE, COPPER ALLOY, NEW $90.00 |
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Vickers Check Valve Pilot Operated DGMPC-3ABK-21 (7323) $99.00 |
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NIB HASKEL 54518 CHECK VALVE $100.00 |
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Parker CPI Fluid Connectors Valve 4V-C04L-1/3-V-SS Process Check Stainless Valve $104.99 |
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NIB HASKEL 28624 CHECK VALVE $100.00 |
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Swagelok SS-8C-VCR-5, 1/2″ MVCR Check Valve, 5 PSI Cracking Pressure $99.00 |
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MERCORD CONTROLS TYPE 123-2 CHECK VALVE SWITCH $100.00 |
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NUMATICS AUTO PILOT S21P-02 CHECK VALVE $100.00 |
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HASKEL 56790 CHECK VALVE 3/8″ NIB $100.00 |
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Parker In-Line Check Valve 3/4″ Brass 12Z-C12L-1-BN-B 3000 psi NEW (440) $99.95 |
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Parker In-Line Check Valve 3/4″ Brass 12A-C12L-1-BN-B 3000 psi NEW (441) $99.95 |
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NEW Vickers DGMPC-3-ABK-BAK-41 Dual Pilot Operated Check Valve $97.99 |
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Parker In Line Check Valve CK3 1 in new $95.99 |
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WE CHECK VALVE CF8M 1/2″ NPT 45 DEG $95.50 |
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ROSS 2768C4900 CHECK VALVE PILOT OPERATED 1/2INCH $95.00 |
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Swagelok 6LV-CW4BW4-P, 1/4″ Tube Stub Check Valve, Electro-Polished $90.00 |
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Nupro 1 PSI Poppet Check Valve SS-8C-VCR-1 Cajon VCR $94.99 |
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ALADCO 303801 NU-CHECK VALVE 3/8 NPTF WITH OVERRIDE $92.99 |
Check Valve Questions
Non Return valves in fluid systems
Non Return Valve
for more
NON RETURN VALVE
A check valve, clack valve, non-return valve or one-way valve is a mechanical device, a valve, which normally allows fluid 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.
Types of check valves
Ball check valve -
is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some (but not all) ball check valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal
Diaphragm check valve -
uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.
Swing check valve or Tilting disc check valve -
is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle
Stop-check valve -
is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.
Lift-check valve -
is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.
Duckbill valve -
is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.
About the Author
Check Valve Videos
Swing Check Valve
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