ASCO 8221G11-24V Solenoid Valve

The ASCO 8221G11-24V Solenoid Valve is a high-performance 2-way normally closed valve engineered for precision fluid control in commercial and industrial HVACR systems. Featuring a robust brass body and reliable NBR seals, this pilot-operated solenoid valve is specifically designed for water service applications requiring a slow-closing solenoid valve mechanism to mitigate damaging water hammer effects. With a 1-1/2" NPT connection and a high flow coefficient of 24 Cv, it efficiently manages pressures ranging from 5 to 150 PSI. The unit operates on a 24Vac power supply and is housed in a durable Nema 4 enclosure, providing superior protection against dust and water ingress. This ASCO RedHat valve is an essential component for technicians seeking a reliable low voltage irrigation valve or industrial water control solution that ensures system longevity and consistent performance under demanding conditions.

• Anti-Water Hammer Design: The specialized slow-closing feature protects your piping infrastructure by reducing pressure surges.
• High Flow Capacity: A 24 Cv rating ensures maximum throughput for large-scale 1.5-inch plumbing systems.
• Industrial Durability: The rugged brass construction and NBR elastomer allow for versatile industrial water control.
• Weatherproof Protection: The Nema 4 rating ensures reliable operation in washdown environments or outdoor installations.
• Reliable Sealing: Premium NBR seals provide bubble-tight shutoff for normally closed water valves.

How does a slow-closing solenoid valve prevent water hammer?
The pilot-operated diaphragm in the ASCO 8221G11-24V is designed to close at a controlled rate, allowing the fluid velocity to decrease gradually rather than abruptly, which eliminates the shockwaves known as water hammer.

Can this ASCO 8221G11 valve be used with hot water?
This specific model features NBR (Buna-N) seals, which are optimized for standard water applications. For high-temperature or steam requirements, ensure the fluid temperature does not exceed the seal's rated limits.

What is the minimum pressure required for this valve to cycle?
Because this is a pilot-operated valve, it requires a minimum pressure differential of 5 PSI to lift the diaphragm and allow flow.

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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