Specifications
Description
The Watts LFF115 150 4 is a 4" lead-free globe-pattern pilot-operated pressure reducing control valve with Flanged connections. It features a ductile iron body. Rated to 300 psi. This model is certified lead-free for potable-water installations.
This 4 inch ACV is armed with ArmorTek®, a patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion. This pressure reducing control valve is designed to automatically reduce a fluctuating higher inlet pressure to a constant lower downstream pressure regardless of varying flow rates. The quick closing action of the valve limits possible damaging high inlet pressure from passing through the valve to downstream piping. This Classic valve style has a globe body pattern with class 150 flanged end connections. SentryPlus Alert® technology provides intelligent pressure monitoring and notifications using integrated sensors, and integrates with the Sensor Control Monitor to deliver maintenance alerts through BAS via RS-485 Modbus or the Nexa® platform over Wi-Fi.
Features
- Body construction with patented 3-part ArmorTek epoxy coating for advanced corrosion resistance
- Globe body pattern with class 150 flanged end connections
- Range 20-175 psi (standard)
- Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity
- Inlet/Outlet gauge ports, gauge not included
Common Questions
- What is the maximum working pressure?
- This unit is built as 150# Flanged and is rated to 300 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 certified lead-free for potable water?
- Yes. The "LF" prefix denotes Watts lead-free construction, compliant with the weighted-average 0.25% lead requirement of the Safe Drinking Water Act (NSF/ANSI 372) for potable-water service.
Specifications
- Type: Pressure Regulator
- Size: 4"
- Inlet Size: 4"
- Outlet Size: 4"
- Connection: Flanged
- Body Material: Ductile Iron
- Pressure Class: Class 150
- Max Pressure (psi): 300
- Operation: Pilot-Operated Diaphragm
- Port Style: Full
- Country of Origin: United States
- Warranty: 1 Year Limited
- MPN: LFF115 150 4
- Lead-Free: Yes
- Item Type: Valve
- Control Function: Pressure Reducing
- Valve Platform: Classic (F-Series)
- Body Pattern: Globe
- End Connection / Pressure Class: 150# Flanged
- Configured Options: Strainer
- Coating: ArmorTek 3-Part Epoxy
Product Information
Dimensions
| Size Nominal | 4" | Inlet Size | 4" |
| Outlet Size | 4" | End Connection | Flanged |
| Pressure Class | Class 150 | — | — |
Details
| Series | LFF115 | Device Type | Pressure Regulator |
| Lead Free | Yes | Body Material | Ductile Iron |
| Operation | Pilot-Operated Diaphragm | Port Style | Full |
| Max Pressure PSI | 300.0 psi | Item Type | Valve |
| Control Function | Pressure Reducing | Valve Platform | Classic (F-Series) |
| Body Pattern | Globe | Pressure Class End | 150# Flanged |
| Options | Strainer | Coating | ArmorTek 3-Part Epoxy |
Compare with similar products
| Port Style | Full
| Full
| Full
| Full
| Full
| Full
|
| Item Type | Valve
| Valve
| Valve
| Valve
| Valve
| Valve
|
| Control Function | Pressure Reducing
| Pressure Reducing (Low-Flow Bypass)
| Pressure Reducing
| Pressure Reducing
| Pressure Reducing
| Pressure Reducing
|
| Valve Platform | Classic (F-Series)
| Mustang (M-Series)
| Classic (F-Series)
| Mustang (M-Series)
| Mustang (M-Series)
| Mustang (M-Series)
|
| Body Pattern | Globe
| Globe
| Globe
| Globe
| Globe
| Globe
|
| Pilot Range PSI | — | 10-75
| 2-30
| 30-300
| 30-300
| 2-30
|
| Pressure Class End | 150# Flanged
| 300# Flanged
| THD (NPT Threaded)
| 150# Flanged
| GRV (Grooved)
| GRV (Grooved)
|
| Options | Strainer
| Low-Flow Bypass, Limit Switch, Strainer, Bypass
| Test Cocks, Strainer
| Position Indicator, Strainer
| Position Indicator, Strainer
| Test Cocks, Strainer
|
| Coating | ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
| ArmorTek 3-Part Epoxy
|
| UL FM Listed | — | Yes | — | Yes | Yes | Yes |
| Series | LFF115
| LFM115-74
| LFF115
| LFM115
| LFM115
| LFM115
|
| 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 | Pressure Regulator
| Pressure Regulator
| Pressure Regulator
| Pressure Regulator
| Pressure Regulator
| Pressure Regulator
|
| Size Nominal | 4"
| 4"
| 2-1/2"
| 8"
| 1-1/4"
| 6"
|
| Inlet Size | 4"
| 4"
| 2-1/2"
| 8"
| 1-1/4"
| 6"
|
| Outlet Size | 4"
| 4"
| 2-1/2"
| 8"
| 1-1/4"
| 6"
|
| Lead Free | Yes | Yes | Yes | Yes | Yes | Yes |
| End Connection | Flanged
| Flanged
| NPT
| Flanged
| Grooved
| Grooved
|
| Body Material | Ductile Iron
| Ductile Iron
| Ductile Iron
| Ductile Iron
| Ductile Iron
| Ductile Iron
|
| Seat Material | — | Buna-N
| Buna-N
| EPDM
| EPDM
| EPDM
|
| Operation | Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
| Pilot-Operated Diaphragm
|
| Pressure Class | Class 150
| Class 300
| — | Class 150
| — | — |
| Max Pressure PSI | 300.0 psi | 600.0 psi | 300.0 psi | 600.0 psi | 600.0 psi | 600.0 psi |
| Max Temp °F | — | 160.0 °F | 160.0 °F | 300.0 °F | 300.0 °F | 300.0 °F |
| Certifications | — | ASSE-1003, UL, FM
| — | UL, FM
| UL, FM
| UL, FM
|
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