Markets
Products A to Z
- Actuators
- Air Vents, Heads & Eliminators
- ANSI Valves
- Ball Valves
- Ball Valves – Brass
- Ball Valves – Bronze
- Ball Valves – Butt Weld
- Ball Valves – Electrically Actuated
- Ball Valves – Electrically Actuated – Spring Return
- Ball Valves – Flanged
- Ball Valves – Lever Operated
- Ball Valves – Marine
- Ball Valves – Plastic
- Ball Valves – Pneumatically Actuated
- Ball Valves – Socket Weld
- Ball Valves – Solvent Weld
- Ball Valves – Stainless Steel
- Ball Valves – Threaded
- Bellows & Expansion Joints
- Expansion Joints – Air, Gasses & Oil
- Expansion Joints – Butt Weld
- Expansion Joints – Chemical & Acids
- Expansion Joints – Flanged 130mm FxF
- Expansion Joints – Flanged Various FxF
- Expansion Joints – High-Temperature
- Expansion Joints – HVAC & Water
- Expansion Joints – Metal Bellows
- Expansion Joints – Threaded
- Expansion Joints – WRAS, ACS & FDA
- Butterfly Valves
- Butterfly Valves – Bronze
- Butterfly Valves – Carbon Steel
- Butterfly Valves – Cast & Ductile Iron
- Butterfly Valves – Double Flanged
- Butterfly Valves – Double Offset
- Butterfly Valves – Electrically Actuated
- Butterfly Valves – EPDM Lined
- Butterfly Valves – High Performance
- Butterfly Valves – Industrial & HVAC
- Butterfly Valves – Lugged & Tapped
- Butterfly Valves – Marine
- Butterfly Valves – Mono Flanged
- Butterfly Valves – NBR Lined
- Butterfly Valves – Plastic
- Butterfly Valves – Pneumatically Actuated
- Butterfly Valves – PTFE Lined
- Butterfly Valves – Silicone Lined
- Butterfly Valves – Stainless Steel
- Butterfly Valves – Viton Lined
- Butterfly Valves – Wafer Multi-Flange
- Butterfly Valves – WRAS Approved
- Check Valves
- Check Valves – Ball & Lift
- Check Valves – Brass
- Check Valves – Bronze
- Check Valves – Cast & Ductile Iron
- Check Valves – Disc
- Check Valves – Dual Plate
- Check Valves – Flanged
- Check Valves – HVAC & Industrial
- Check Valves – Marine
- Check Valves – Solvent Weld
- Check Valves – Spring Loaded
- Check Valves – Stainless Steel
- Check Valves – Steel
- Check Valves – Swing (Flap)
- Check Valves – Threaded
- Check Valves – UL/FM Approved
- Check Valves – Wafer (Multi-Flange)
- Check Valves – WRAS Approved & Water Works
- Couplings & Tubing
- Data Loggers & Displays
- Diaphragm Valves
- Fire Hydrant Valves
- Fire Hydrant (Deck) Valves – Marine
- Fire Hydrant (Landing) Valves – Gate
- Fire Hydrant Valves – BSP/NST Outlet
- Fire Hydrant Valves – Diaphragm
- Fire Hydrant Valves – Globe
- Fire Hydrant Valves – Instantaneous Outlet
- Fire Hydrant Valves – Landing (Dry Riser)
- Fire Hydrant Valves – Pressure Regulating
- Fire Hydrant Valves – Storz Outlet
- Float Valves
- Gas Meters
- Gate Valves
- Globe Valves
- Globe Valves – Angled
- Globe Valves – Bronze
- Globe Valves – Flanged DIN & ANSI
- Globe Valves – Flanged JIS
- Globe Valves – Industrial & HVAC
- Globe Valves – Iron
- Globe Valves – Marine
- Globe Valves – Screw Down Non-Return (SDNR)
- Globe Valves – Screw Lift (SL)
- Globe Valves – Screwed
- Globe Valves – Steel
- Globe Valves – Straight
- Heat & Energy Meters
- Homerider AMR Systems
- Meter Boxes & Manifolds
- Mud Boxes
- Needle Valves
- Oil Meters
- Overflow & Pressure Control Valves
- Parallel Slide Valves
- Pneumatic Cylinders
- Pneumatic Valves
- Pressure & Flow Switches
- Pressure Gauges
- Pressure Reducing Valves
- Pressure Reducing Valves – Air & Gases
- Pressure Reducing Valves – Bailey Birkett
- Pressure Reducing Valves – Direct Acting
- Pressure Reducing Valves – Flanged
- Pressure Reducing Valves – HVAC & Water
- Pressure Reducing Valves – Oil
- Pressure Reducing Valves – Pilot Operated
- Pressure Reducing Valves – Spirax Sarco
- Pressure Reducing Valves – Steam
- Pressure Reducing Valves – Threaded
- Pressure Reducing Valves – WRAS Approved
- Pulse & Communication Modules
- Quick Closing Valves
- Safety Relief Valves
- Safety Relief Valves – Air & Gasses
- Safety Relief Valves – Atmospheric
- Safety Relief Valves – Bailey Birkett
- Safety Relief Valves – Cryogenic & Food
- Safety Relief Valves – Double
- Safety Relief Valves – Enclosed Side Discharge
- Safety Relief Valves – Goetze
- Safety Relief Valves – Heating & Water
- Safety Relief Valves – High Capacity
- Safety Relief Valves – In-Line
- Safety Relief Valves – Johnson Valves
- Safety Relief Valves – Medium Capacity
- Safety Relief Valves – Nabic
- Safety Relief Valves – Oxygen
- Safety Relief Valves – Pressure & Temperature
- Safety Relief Valves – Process & Oil
- Safety Relief Valves – Steam & Boilerhouse
- Safety Relief Valves – Wade
- Sea Chests
- Self Closing Valves
- Sight & Flow Indicators
- Sika Thermometers
- Solenoid Valves
- Spring Return Electrically Actuated Valves
- Steam Traps
- Storm Valves
- Strainers & Filters
- Tank Level Gauge & Indicators
- Teekay Couplings
- Temperature Controls & Valves
- Thermometers & Temperature Gauges
- UL/FM Fire Protection Valves
- uPVC & ABS Plastic Valves
- Vacuum Breakers
- Water Meters
- Water Meters – Combination
- Water Meters – Domestic & Commercial
- Water Meters – Electromagnetic
- Water Meters – Electronic Hybrid
- Water Meters – Flanged Bulk
- Water Meters – Hot Water
- Water Meters – Insulation Jackets
- Water Meters – Manifold
- Water Meters – Meter Boxes
- Water Meters – Positive Displacement
- Water Meters – Pulse & M-Bus Modules
- Water Meters – Woltmann Turbine
- Water Works Valves
UL Listed & FM Approved Check (Non-Return) Valves
Johnson Valves are a UK distributor for the UL listed and FM approved range of check valves manufactured by the Mueller Company.
A2120 / A2122 – Cast Iron Mueller® Check (Non-Return) Valve
These Mueller® check (non-return) valves are available with bronze seat rings with the option of either a bronze or a rubber-faced disc.
Type
Swing (Flap)
Size & Connections
DN65 to DN300 • ANSI 125 Flange (PN16 option)
Duty
Water
Materials
Cast Iron Body & Bonnet • Bronze Disc (A2122: Rubber-faced option)
Pressure Rating
14 Bar
Temperature
0 to 50°C
Compliance & Approvals
UL listed • FM approved
