Watts 0856738 Valve
The Watts 0856738 (Model CSM-61-M1-T 3/4) is a high-precision 3/4" NPT flow measurement valve engineered for critical hydronic balancing in HVAC systems. Built with a rugged bronze body, this manual balancing valve features a bi-directional, positive shutoff ball design and a blowout-proof stem to maintain system integrity under operational stress. Rated for 300 psi (21 bar) at 250°F, it is specifically optimized for low to medium flow rates in fan coil units, water source heat pumps, and reheat coils. The integrated memory stop feature simplifies field adjustment by allowing the technician to return the valve to a preset balance point after shutoff, while the integral drain ports and checked metering ports with drip caps ensure streamlined diagnostics and maintenance. Its compact footprint is ideal for crowded piping environments where traditional balancing hardware may not fit.
- Enhanced Precision: Features an extended throttling range and large indicator plate for accurate flow monitor readings even in low-flow branch lines.
- Field Reliability: Bi-directional flow design eliminates installation errors, ensuring the valve functions regardless of piping orientation.
- Maintenance Efficiency: Includes two brass pressure taps and built-in drain ports, allowing for rapid differential pressure measurement and system venting.
- Durable Construction: The 3/4" NPT threaded connections and bronze flow measurement valve housing withstand demanding commercial HVACR environments.
Common Questions
How do I ensure the highest accuracy during installation?
For peak performance, place the valve in a straight pipe run with at least 5 pipe diameters of unobstructed flow upstream and 2 diameters downstream. If installed after a pump, maintain a 10-diameter clearance.
Can this valve be used in potable water systems?
No, the Watts CSM-61-M1-T is for non-potable HVACR applications only, such as chilled water or hot water heating loops, and does not meet low-lead requirements for human consumption.
Does this unit require special tools for balancing?
Balancing requires a standard differential pressure gauge connected to the checked metering ports to correlate the pressure drop with the manufacturer's provided flow charts.
This item is not eligible for free shipping.
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: $268.46
-65%$268.46
$93.96Watts 0856738 Valve
The Watts 0856738 (Model CSM-61-M1-T 3/4) is a high-precision 3/4" NPT flow measurement valve engineered for critical hydronic balancing in HVAC systems. Built with a rugged bronze body, this manual balancing valve features a bi-directional, positive shutoff ball design and a blowout-proof stem to maintain system integrity under operational stress. Rated for 300 psi (21 bar) at 250°F, it is specifically optimized for low to medium flow rates in fan coil units, water source heat pumps, and reheat coils. The integrated memory stop feature simplifies field adjustment by allowing the technician to return the valve to a preset balance point after shutoff, while the integral drain ports and checked metering ports with drip caps ensure streamlined diagnostics and maintenance. Its compact footprint is ideal for crowded piping environments where traditional balancing hardware may not fit.
- Enhanced Precision: Features an extended throttling range and large indicator plate for accurate flow monitor readings even in low-flow branch lines.
- Field Reliability: Bi-directional flow design eliminates installation errors, ensuring the valve functions regardless of piping orientation.
- Maintenance Efficiency: Includes two brass pressure taps and built-in drain ports, allowing for rapid differential pressure measurement and system venting.
- Durable Construction: The 3/4" NPT threaded connections and bronze flow measurement valve housing withstand demanding commercial HVACR environments.
Common Questions
How do I ensure the highest accuracy during installation?
For peak performance, place the valve in a straight pipe run with at least 5 pipe diameters of unobstructed flow upstream and 2 diameters downstream. If installed after a pump, maintain a 10-diameter clearance.
Can this valve be used in potable water systems?
No, the Watts CSM-61-M1-T is for non-potable HVACR applications only, such as chilled water or hot water heating loops, and does not meet low-lead requirements for human consumption.
Does this unit require special tools for balancing?
Balancing requires a standard differential pressure gauge connected to the checked metering ports to correlate the pressure drop with the manufacturer's provided flow charts.
This item is not eligible for free shipping.
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 0856738 (Model CSM-61-M1-T 3/4) is a high-precision 3/4" NPT flow measurement valve engineered for critical hydronic balancing in HVAC systems. Built with a rugged bronze body, this manual balancing valve features a bi-directional, positive shutoff ball design and a blowout-proof stem to maintain system integrity under operational stress. Rated for 300 psi (21 bar) at 250°F, it is specifically optimized for low to medium flow rates in fan coil units, water source heat pumps, and reheat coils. The integrated memory stop feature simplifies field adjustment by allowing the technician to return the valve to a preset balance point after shutoff, while the integral drain ports and checked metering ports with drip caps ensure streamlined diagnostics and maintenance. Its compact footprint is ideal for crowded piping environments where traditional balancing hardware may not fit.
- Enhanced Precision: Features an extended throttling range and large indicator plate for accurate flow monitor readings even in low-flow branch lines.
- Field Reliability: Bi-directional flow design eliminates installation errors, ensuring the valve functions regardless of piping orientation.
- Maintenance Efficiency: Includes two brass pressure taps and built-in drain ports, allowing for rapid differential pressure measurement and system venting.
- Durable Construction: The 3/4" NPT threaded connections and bronze flow measurement valve housing withstand demanding commercial HVACR environments.
Common Questions
How do I ensure the highest accuracy during installation?
For peak performance, place the valve in a straight pipe run with at least 5 pipe diameters of unobstructed flow upstream and 2 diameters downstream. If installed after a pump, maintain a 10-diameter clearance.
Can this valve be used in potable water systems?
No, the Watts CSM-61-M1-T is for non-potable HVACR applications only, such as chilled water or hot water heating loops, and does not meet low-lead requirements for human consumption.
Does this unit require special tools for balancing?
Balancing requires a standard differential pressure gauge connected to the checked metering ports to correlate the pressure drop with the manufacturer's provided flow charts.
This item is not eligible for free shipping.
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.
