1039 Check Non-Return Valve
1060A Check Non-Return Valve
57 Check Non-Return Valve
JV2280 Check Non-Return Valve
T480Y Check Non-Return Valve
Check (Non-Return) Valves
Johnson Valves offer check (non-return) valves for wide range of applications, we offer various patterns and connections. We also offer Storm (Scupper) Valves for the marine industry and Screw Down Non-Return Valves (SDNR) which is a globe valve and lift check valve combined.
Check (non-return) valves, are used in pipeline systems to allow flow in one direction only. There are a number of reasons for using check (non-return) valves, which include:
Protection of any item of equipment that can be affected by reverse flow.
To check the pressure surges associated with hydraulic forces.
Prevention of flooding.
Prevention of reverse flow on system shutdown.
Prevention of flow under gravity.
Relief of vacuum conditions.
Plastic (ABS & uPVC)
Threaded (BSP & NPT)