Watts LFM115 150 4 Lead-Free Pressure Reducing Valve, Ductile Iron, Flanged

The Watts LFM115 150 4 is a 4" lead-free globe-pattern pilot-operated pressure reducing control valve with Flanged connections. It features a ductile iron body and a epdm seat. Rated to 600 psi and up to 300°F. 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 the possibility of damaging high inlet pressure from passing through the valve to downstream piping. This Mustang valve style has a globe body pattern with class 150 flanged end connections, configured with inlet and outlet gauge ports. 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 30-300 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 600 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.

What fluid temperature can the EPDM trim handle?

This valve is built with EPDM elastomers, good to about 300°F. Watts offers the same body with Buna-N (to 160°F), FKM/Viton (to 250°F) or EPDM (to 300°F) — pick the elastomer for your fluid temperature, not the body.

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: Pressure Regulator
• Size: 4"
• Inlet Size: 4"
• Outlet Size: 4"
• Connection: Flanged
• Body Material: Ductile Iron
• Seat / Seal Material: EPDM
• Pressure Class: Class 150
• Max Pressure (psi): 600
• Operation: Pilot-Operated Diaphragm
• Port Style: Full
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: LFM115 150 4
• Temperature: up to 300°F
• Certifications: UL, FM
• Lead-Free: Yes
• Item Type: Valve
• Control Function: Pressure Reducing
• Valve Platform: Mustang (M-Series)
• Body Pattern: Globe
• End Connection / Pressure Class: 150# Flanged
• Configured Options: Strainer
• Coating: ArmorTek 3-Part Epoxy
• UL Listed / FM Approved: Yes