Hydraulic Check Valves

Hydraulic check valves although simple, perform a very important function within a hydraulic system. Check valves allow the free flow of fluid in one direction and block the flow travelling in the opposite direction. Also known as an NRV (non-return valve) these simple devices help eliminate any potential damage caused by fluid backflow pressure. RS Components offer a range of high-quality hydraulic components from leading brands including Parker, Bosch Rexroth and of course RS PRO.

How does a Hydraulic Check Valve work?

Hydraulic check valves have two ports, an inlet port and an outlet port, they are flow sensitive and depend on the fluid to open and close the internal seat. Hydraulic check valves are quite unique, they are one of the only types of valve that does not require any human intervention to operate. Hydraulic check valves are completely self-automated.

Mounting types for Hydraulic Check Valves

Hydraulic check valves are available in two main mounting types. Inline threaded, or CETOP plate mounting.

Hydraulic Inline Threaded Check Valves

In-line check valves can be mounted directly in a hydraulic pipeline. They are typically made from steel or stainless steel with a tough nitrile rubber or nylon seal. Standard BSP threads in sizes ranging from 1/4 inch to 1 inch.

CETOP Mounting Hydraulic Check Valves

These check valves are enclosed in a metal or plastic housing and have a CETOP mounting pattern for modular construction. Available in double-acting or single-acting.

What is Cracking Pressure?

Cracking pressure refers to the minimum pressure differential needed between the inlet and outlet of the valve at which the first indication of flow occurs. When cracking pressure is reached, the valve will open to allow flow, when it drops the valve will close.

What is CETOP?

CETOP stands for Comité Européen des Transmissions Oléohydrauliques et Pneumatiques. CETOP is the European Fluid Power Committee. CETOP is the communications platform for fluid power in Europe. CETOP mounting valves have a standard mounting pattern for modular construction. It ensures that any valves from any manufacturer, providing the CETOP pattern is the same is compatible with each other.


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Description Price Manufacturer Series CETOP Mounting Single/Double Cracking Pressure Maximum Operating Pressure Maximum Flow Rate Minimum Operating Temperature Maximum Operating Temperature Thread Size Connection Port Thread Body Material Mounting Type
RS庫存編號 283-8318
BrandRS PRO
HK$207.97
單位
FT260 - - - 350 bar 55L/min -20°C +100°C 1/2in G 1/2 Steel Inline
RS庫存編號 283-8302
BrandRS PRO
HK$142.85
單位
FT260 - - - 350 bar 30L/min -20°C +100°C 3/8in G 3/8 Steel Inline
RS庫存編號 728-887
製造零件編號R900347495
HK$2,167.69
單位
6X CETOP 3 Double - 315 bar 60L/min -30°C +80°C - - - CETOP
RS庫存編號 283-8295
BrandRS PRO
HK$119.86
單位
FT260 - - - 350 bar 15L/min -20°C +100°C 1/4in G 1/4 Steel Inline
RS庫存編號 807-312
製造零件編號EW06LCF
BrandParker
HK$50.68
單位
RHZ18 - - - 400 bar - -40°C +120°C 1/2in G 1/2 Steel Inline
RS庫存編號 134-7044
製造零件編號ZRV-P-01
BrandParker
HK$1,174.89
單位
ZRV CETOP 3 Single 0.5bar 350bar 40L/min -20°C +60°C - - - CETOP
RS庫存編號 134-7049
製造零件編號ZRE-A02-D1
BrandParker
HK$2,267.41
單位
ZRE CETOP 5 Single 2bar 315bar 120L/min -20°C +60°C - - - CETOP
RS庫存編號 728-893
製造零件編號R900481624
HK$2,782.76
單位
- CETOP 3 Double - - 80L/min - - - - - CETOP
RS庫存編號 727-840
製造零件編號RHDI1/4CF
BrandParker
HK$470.92
單位
L3 - - - 400 bar 8m/s -35°C +100°C 1/4in G 1/4 Zinc Plated Steel Inline
RS庫存編號 237-2470
製造零件編號2303
BrandParker
HK$451.56
單位
- - - 0.35bar - 50L/min -30°C +90°C 1/2in G 1/2 Steel Inline
RS庫存編號 134-7048
製造零件編號ZRE-AB01-D1
BrandParker
HK$1,757.49
單位
ZRE CETOP 3 Double 1.2bar 350bar 60L/min -20°C +60°C - - - CETOP
RS庫存編號 324-4972
BrandRS PRO
HK$1,684.02
單位
FT257 - - - 400 bar 90L/min -20°C +200°C 3/4in BSP 3/4 Stainless Steel, Steel Inline
RS庫存編號 134-7033
製造零件編號ZRD-BZ01-S0-D1
BrandParker
HK$1,447.85
單位
ZRD CETOP 3 Single 0.7bar 350bar 80L/min -20°C +60°C - - - CETOP
RS庫存編號 134-7036
製造零件編號ZRD-ABZ01-S0-D1
BrandParker
HK$1,743.80
單位
ZRD CETOP 3 Double 0.7bar 350bar 80L/min -20°C +60°C - - - CETOP
RS庫存編號 134-7042
製造零件編號ZRD-ABA02-S0-D1
BrandParker
HK$2,136.88
單位
ZRD CETOP 5 Double 0.7bar 315bar 160L/min -20°C +60°C - - - CETOP
RS庫存編號 134-7050
製造零件編號ZRE-B02-D1
BrandParker
HK$2,267.41
單位
ZRE CETOP 5 Single 2bar 315bar 120L/min -20°C +60°C - - - CETOP
RS庫存編號 237-2458
製造零件編號2302
BrandParker
HK$385.92
單位
- - - 0.35bar - 30L/min -30°C +90°C 3/8in G 3/8 Steel Inline
RS庫存編號 324-4950
BrandRS PRO
HK$933.08
單位
FT257 - - - 400 bar 40L/min -20°C +200°C 3/8in BSP 3/8 Stainless Steel, Steel Inline
RS庫存編號 134-7045
製造零件編號ZRV-P-02
BrandParker
HK$1,554.01
單位
ZRV CETOP 5 Single 0.5bar 315bar 100L/min -20°C +60°C - - - CETOP
RS庫存編號 237-2486
製造零件編號2304
BrandParker
HK$671.92
單位
- - - 0.35bar - 100L/min -30°C +90°C 3/4in G 3/4 Steel Inline