
Watts 0379112 Strainer
The Watts 0379112 (Series LF777SI) is a heavy-duty 3/4 inch Y-strainer engineered for commercial and light industrial applications. This lead-free brass strainer utilizes a wye-pattern body constructed from cast copper silicon alloy, ensuring full compliance with NSF/ANSI 61 and 372 standards for potable water systems. Designed to protect sensitive downstream equipment like backflow preventers and pumps, it features a 20 mesh stainless steel screen that effectively captures dirt, rust, and scale without compromising flow velocity. The tapped retainer cap includes a closure plug for simplified blow-down maintenance, while the 45-degree flared screen opening minimizes pressure drop across the FNPT threaded connections. Rated for a maximum pressure of 400 psi WOG at 210°F, this wye-pattern strainer provides a rugged, corrosion-resistant solution for contractors requiring reliable inline filtration in high-performance piping systems.
Key Benefits- Lead-Free Reliability: Cast copper silicon alloy construction meets all federal mandates for potable water safety.
- High-Pressure Performance: Rated for up to 400 psi (27.6 bar) non-shock WOG, suitable for demanding fluid handling.
- Streamlined Maintenance: The tapped retainer cap with a standard closure plug allows for easy blow-down without full disassembly.
- Optimized Flow: Features a flared screen design on the upstream end to ensure unrestricted flow and minimal pressure loss.
- Debris Protection: The durable 304 stainless steel screen (#20 mesh) provides superior mechanical filtration for valves and meters.
What is the difference between the LF777SI and S777 models?
The LF777SI model features threaded FNPT connections and a lead-free body, whereas the S series typically refers to solder (sweat) connections. The "SI" designation specifically includes the tapped cap and closure plug for blow-down capabilities.
Can I use this strainer in steam applications?
Yes, this unit is rated for 125 psi WSP (Working Steam Pressure) at 353°F, making it versatile for both water and low-pressure steam lines.
Is the closure plug included with this SKU?
Yes, the Watts 0379112 comes standard with a 1/4" closure plug installed in the tapped retainer cap for immediate field installation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $61.88
-65%$61.88
$21.66Watts 0379112 Strainer
The Watts 0379112 (Series LF777SI) is a heavy-duty 3/4 inch Y-strainer engineered for commercial and light industrial applications. This lead-free brass strainer utilizes a wye-pattern body constructed from cast copper silicon alloy, ensuring full compliance with NSF/ANSI 61 and 372 standards for potable water systems. Designed to protect sensitive downstream equipment like backflow preventers and pumps, it features a 20 mesh stainless steel screen that effectively captures dirt, rust, and scale without compromising flow velocity. The tapped retainer cap includes a closure plug for simplified blow-down maintenance, while the 45-degree flared screen opening minimizes pressure drop across the FNPT threaded connections. Rated for a maximum pressure of 400 psi WOG at 210°F, this wye-pattern strainer provides a rugged, corrosion-resistant solution for contractors requiring reliable inline filtration in high-performance piping systems.
Key Benefits- Lead-Free Reliability: Cast copper silicon alloy construction meets all federal mandates for potable water safety.
- High-Pressure Performance: Rated for up to 400 psi (27.6 bar) non-shock WOG, suitable for demanding fluid handling.
- Streamlined Maintenance: The tapped retainer cap with a standard closure plug allows for easy blow-down without full disassembly.
- Optimized Flow: Features a flared screen design on the upstream end to ensure unrestricted flow and minimal pressure loss.
- Debris Protection: The durable 304 stainless steel screen (#20 mesh) provides superior mechanical filtration for valves and meters.
What is the difference between the LF777SI and S777 models?
The LF777SI model features threaded FNPT connections and a lead-free body, whereas the S series typically refers to solder (sweat) connections. The "SI" designation specifically includes the tapped cap and closure plug for blow-down capabilities.
Can I use this strainer in steam applications?
Yes, this unit is rated for 125 psi WSP (Working Steam Pressure) at 353°F, making it versatile for both water and low-pressure steam lines.
Is the closure plug included with this SKU?
Yes, the Watts 0379112 comes standard with a 1/4" closure plug installed in the tapped retainer cap for immediate field installation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Watts 0379112 (Series LF777SI) is a heavy-duty 3/4 inch Y-strainer engineered for commercial and light industrial applications. This lead-free brass strainer utilizes a wye-pattern body constructed from cast copper silicon alloy, ensuring full compliance with NSF/ANSI 61 and 372 standards for potable water systems. Designed to protect sensitive downstream equipment like backflow preventers and pumps, it features a 20 mesh stainless steel screen that effectively captures dirt, rust, and scale without compromising flow velocity. The tapped retainer cap includes a closure plug for simplified blow-down maintenance, while the 45-degree flared screen opening minimizes pressure drop across the FNPT threaded connections. Rated for a maximum pressure of 400 psi WOG at 210°F, this wye-pattern strainer provides a rugged, corrosion-resistant solution for contractors requiring reliable inline filtration in high-performance piping systems.
Key Benefits- Lead-Free Reliability: Cast copper silicon alloy construction meets all federal mandates for potable water safety.
- High-Pressure Performance: Rated for up to 400 psi (27.6 bar) non-shock WOG, suitable for demanding fluid handling.
- Streamlined Maintenance: The tapped retainer cap with a standard closure plug allows for easy blow-down without full disassembly.
- Optimized Flow: Features a flared screen design on the upstream end to ensure unrestricted flow and minimal pressure loss.
- Debris Protection: The durable 304 stainless steel screen (#20 mesh) provides superior mechanical filtration for valves and meters.
What is the difference between the LF777SI and S777 models?
The LF777SI model features threaded FNPT connections and a lead-free body, whereas the S series typically refers to solder (sweat) connections. The "SI" designation specifically includes the tapped cap and closure plug for blow-down capabilities.
Can I use this strainer in steam applications?
Yes, this unit is rated for 125 psi WSP (Working Steam Pressure) at 353°F, making it versatile for both water and low-pressure steam lines.
Is the closure plug included with this SKU?
Yes, the Watts 0379112 comes standard with a 1/4" closure plug installed in the tapped retainer cap for immediate field installation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.











