Specifications
Description
The Watts 2 M116FM 150 is a 2-1/2" globe-pattern pilot-operated pressure relief / sustaining / backpressure control valve with Flanged connections. It features a ductile iron body. Rated to 175 psi.
This class 150 flanged 2 inch relief valve, both angle and globe, meets all requirements for UL listed, FM Approved fire protection service. It automatically maintains a constant pressure in the fire protection system by relieving excess pressure. The pressure relief control is normally closed, held closed by an adjustable spring setting to maintain a constant inlet pressure to the main valve.
Features
- Pressure relief control valve
- Class 150 flanged
- 175 psig rated
- Copper tubing/brass fittings
Common Questions
- What is the maximum working pressure?
- This unit is built as 150# Flanged and is rated to 175 psi. End connection sets the ceiling on this platform, and 150# and 300# bodies are not interchangeable — confirm the class matches your flange drilling before ordering.
- Is this valve UL Listed and FM Approved for fire protection?
- Yes — this model carries the UL listing and FM approval required for fire-protection service. Non-listed control valves cannot be substituted on a fire job even when the body and pilot are otherwise identical.
Specifications
- Type: Relief
- Size: 2-1/2"
- Inlet Size: 2-1/2"
- Outlet Size: 2-1/2"
- Connection: Flanged
- Body Material: Ductile Iron
- Pressure Class: Class 150
- Max Pressure (psi): 175
- Application: Fire Protection
- Operation: Pilot-Operated Diaphragm
- Country of Origin: United States
- Warranty: 1 Year Limited
- MPN: 2 M116FM 150
- Lead-Free: No
- Item Type: Valve
- Control Function: Pressure Relief / Sustaining / Backpressure
- Valve Platform: Mustang (M-Series)
- Body Pattern: Globe
- End Connection / Pressure Class: 150# Flanged
- Coating: Fusion-Bonded Epoxy
- UL Listed / FM Approved: Yes
Product Information
| SKU | UPC | Country of Origin | Warranty |
|---|---|---|---|
| 4422-16 | 737733031239 | United States | 1 Year Limited |
Dimensions
| Size Nominal | 2-1/2" | Inlet Size | 2-1/2" |
| Outlet Size | 2-1/2" | End Connection | Flanged |
| Pressure Class | Class 150 | — | — |
Details
| Series | M116FM | Device Type | Relief |
| Body Material | Ductile Iron | Application | Fire Protection |
| Operation | Pilot-Operated Diaphragm | Max Pressure PSI | 175.0 psi |
| Item Type | Valve | Control Function | Pressure Relief / Sustaining / Backpressure |
| Valve Platform | Mustang (M-Series) | Body Pattern | Globe |
| Pressure Class End | 150# Flanged | Coating | Fusion-Bonded Epoxy |
| UL FM Listed | Yes | — | — |
Compare with similar products
| Port Style | — | Full
| Full
| Full
| Full
| Full
|
| Item Type | Valve
| Valve
| Valve
| Valve
| Valve
| Valve
|
| Control Function | Pressure Relief / Sustaining / Backpressure
| Pressure Relief / Sustaining / Backpressure
| Pressure Relief / Sustaining / Backpressure
| Pressure Relief / Sustaining / Backpressure
| Pressure Relief / Sustaining / Backpressure
| Pressure Relief / Sustaining / Backpressure
|
| Valve Platform | Mustang (M-Series)
| Classic (F-Series)
| Classic (F-Series)
| Mustang (M-Series)
| Mustang (M-Series)
| Classic (F-Series)
|
| Body Pattern | Globe
| Globe
| Globe
| Globe
| Globe
| Globe
|
| Pilot Range PSI | — | 20-200
| 20-200
| 20-200
| 20-200
| 20-200
|
| Pressure Class End | 150# Flanged
| 150# Flanged
| 300# Flanged
| 300# Flanged
| THD (NPT Threaded)
| THD (NPT Threaded)
|
| Options | — | Test Cocks, Strainer
| Test Cocks, Strainer
| Test Cocks, Strainer
| Limit Switch, Strainer
| Test Cocks, Strainer
|
| Coating | Fusion-Bonded Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
|
| Series | M116FM
| LFF116
| LFF116
| LFM116
| LFM116
| LFF116
|
| Country Of Origin | United States
| United States
| United States
| United States
| United States
| United States
|
| Warranty | 1 Year Limited
| 1 Year Limited
| 1 Year Limited
| 1 Year Limited
| 1 Year Limited
| 1 Year Limited
|
| Spec Sheet | — | |||||
| Install Sheet | — | |||||
| Device Type | Relief
| Relief
| Relief
| Relief
| Relief
| Relief
|
| Size Nominal | 2-1/2"
| 6"
| 3"
| 3"
| 1-1/2"
| 1-1/2"
|
| Inlet Size | 2-1/2"
| 6"
| 3"
| 3"
| 1-1/2"
| 1-1/2"
|
| Outlet Size | 2-1/2"
| 6"
| 3"
| 3"
| 1-1/2"
| 1-1/2"
|
| Lead Free | — | Yes | Yes | Yes | Yes | Yes |
| End Connection | Flanged
| Flanged
| Flanged
| Flanged
| NPT
| NPT
|
| Body Material | Ductile Iron
| Ductile Iron
| Ductile Iron
| Ductile Iron
| Ductile Iron
| Ductile Iron
|
| Seat Material | — | Buna-N
| Buna-N
| Buna-N
| Buna-N
| Buna-N
|
| Operation | Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
|
| Pressure Class | Class 150
| Class 150
| Class 300
| Class 300
| — | — |
| Max Pressure PSI | 175.0 psi | 200.0 psi | 200.0 psi | 600.0 psi | 600.0 psi | 200.0 psi |
| Max Temp °F | — | 160.0 °F | 160.0 °F | 160.0 °F | 160.0 °F | 160.0 °F |
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