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

The Watts LFM115-SA 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 LFM115 ductile iron class 150 flange pressure reducing control valve with low flow by-pass is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates. Flow requirements below the normal range of the main line pressure reducing control valve are handled by a separate, valve mounted, direct acting, low flow by-pass pressure reducing valve. 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 and cover are constructed of strong and durable ductile iron - ASTM A536
• Automatically reduces a fluctuating higher upstream pressure to a constant lower downstream pressure
• Simplified and efficient design is easy and economical to maintain
• Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity
• Full port design

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-SA 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
• Coating: ArmorTek 3-Part Epoxy
• UL Listed / FM Approved: Yes