
Watts 0856809 Valve
The Watts 0856809 Valve (Model LFCSM-61-S) is a precision-engineered 1/2" solder flow measurement valve designed for balancing low-to-medium flow rate hydronic systems. Featuring a lead-free brass body, this manual balancing valve utilizes a ball-type design with an extended throttling range and a large indicator plate for superior accuracy in system balancing, even at low flow velocities. The integrated positive memory feature allows contractors to set and lock the desired flow rate, ensuring the system remains balanced after shutoff for maintenance. Unlike unidirectional alternatives, its bi-directional flow design eliminates installation errors in tight piping compartments like fan coil units or water source heat pumps. The valve is equipped with checked metering ports, blowout-resistant stems, and an integral drain port, providing a compact, all-in-one solution that eliminates the need for separate service valves in domestic water recirculation or HVAC branch lines.
Key Benefits- Lead-Free Construction: Complies with NSF/ANSI 61 requirements for potable and domestic water applications.
- Precision Throttling: Ball valve architecture provides high-resolution flow control and accurate flow measurement across various pressure drops.
- Space-Saving Design: Compact footprint is ideal for crowded mechanical rooms and terminal unit installations.
- Streamlined Installation: 1/2" solder connections (SW) allow for fast, leak-free integration without the need for additional adapters.
- Dual-Functionality: Acts as both a balancing valve and a positive shutoff service valve.
Is there a specific installation orientation required for accuracy?
While the valve is bi-directional, for maximum flow measurement accuracy, it is recommended to maintain at least five pipe diameters of straight run upstream and two diameters downstream from any fittings.
Can this valve be used for both heating and cooling lines?
Yes, the LFCSM-61-S is rated for temperatures up to 200°F (93°C) and pressures up to 125 psi, making it suitable for chilled water, hot water, and domestic recirculation systems.
Does the valve require disassembly before soldering?
No, the solder-style CSM valves are designed to be installed without disassembly. However, technicians should use low-temperature solder and direct heat away from the valve center to protect the internal seats.
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: $310.85
-65%$310.85
$108.80Watts 0856809 Valve
The Watts 0856809 Valve (Model LFCSM-61-S) is a precision-engineered 1/2" solder flow measurement valve designed for balancing low-to-medium flow rate hydronic systems. Featuring a lead-free brass body, this manual balancing valve utilizes a ball-type design with an extended throttling range and a large indicator plate for superior accuracy in system balancing, even at low flow velocities. The integrated positive memory feature allows contractors to set and lock the desired flow rate, ensuring the system remains balanced after shutoff for maintenance. Unlike unidirectional alternatives, its bi-directional flow design eliminates installation errors in tight piping compartments like fan coil units or water source heat pumps. The valve is equipped with checked metering ports, blowout-resistant stems, and an integral drain port, providing a compact, all-in-one solution that eliminates the need for separate service valves in domestic water recirculation or HVAC branch lines.
Key Benefits- Lead-Free Construction: Complies with NSF/ANSI 61 requirements for potable and domestic water applications.
- Precision Throttling: Ball valve architecture provides high-resolution flow control and accurate flow measurement across various pressure drops.
- Space-Saving Design: Compact footprint is ideal for crowded mechanical rooms and terminal unit installations.
- Streamlined Installation: 1/2" solder connections (SW) allow for fast, leak-free integration without the need for additional adapters.
- Dual-Functionality: Acts as both a balancing valve and a positive shutoff service valve.
Is there a specific installation orientation required for accuracy?
While the valve is bi-directional, for maximum flow measurement accuracy, it is recommended to maintain at least five pipe diameters of straight run upstream and two diameters downstream from any fittings.
Can this valve be used for both heating and cooling lines?
Yes, the LFCSM-61-S is rated for temperatures up to 200°F (93°C) and pressures up to 125 psi, making it suitable for chilled water, hot water, and domestic recirculation systems.
Does the valve require disassembly before soldering?
No, the solder-style CSM valves are designed to be installed without disassembly. However, technicians should use low-temperature solder and direct heat away from the valve center to protect the internal seats.
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 0856809 Valve (Model LFCSM-61-S) is a precision-engineered 1/2" solder flow measurement valve designed for balancing low-to-medium flow rate hydronic systems. Featuring a lead-free brass body, this manual balancing valve utilizes a ball-type design with an extended throttling range and a large indicator plate for superior accuracy in system balancing, even at low flow velocities. The integrated positive memory feature allows contractors to set and lock the desired flow rate, ensuring the system remains balanced after shutoff for maintenance. Unlike unidirectional alternatives, its bi-directional flow design eliminates installation errors in tight piping compartments like fan coil units or water source heat pumps. The valve is equipped with checked metering ports, blowout-resistant stems, and an integral drain port, providing a compact, all-in-one solution that eliminates the need for separate service valves in domestic water recirculation or HVAC branch lines.
Key Benefits- Lead-Free Construction: Complies with NSF/ANSI 61 requirements for potable and domestic water applications.
- Precision Throttling: Ball valve architecture provides high-resolution flow control and accurate flow measurement across various pressure drops.
- Space-Saving Design: Compact footprint is ideal for crowded mechanical rooms and terminal unit installations.
- Streamlined Installation: 1/2" solder connections (SW) allow for fast, leak-free integration without the need for additional adapters.
- Dual-Functionality: Acts as both a balancing valve and a positive shutoff service valve.
Is there a specific installation orientation required for accuracy?
While the valve is bi-directional, for maximum flow measurement accuracy, it is recommended to maintain at least five pipe diameters of straight run upstream and two diameters downstream from any fittings.
Can this valve be used for both heating and cooling lines?
Yes, the LFCSM-61-S is rated for temperatures up to 200°F (93°C) and pressures up to 125 psi, making it suitable for chilled water, hot water, and domestic recirculation systems.
Does the valve require disassembly before soldering?
No, the solder-style CSM valves are designed to be installed without disassembly. However, technicians should use low-temperature solder and direct heat away from the valve center to protect the internal seats.
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.












