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)