Description
ASCO 8220G408 Solenoid Valve Overview
The ASCO 8220G408 is a heavy-duty, pilot-operated solenoid valve engineered for demanding HVAC, steam, and hot water applications. With a 2-way, normally closed configuration, this valve remains closed when de-energized and opens upon receiving a 120VAC signal — providing reliable, fail-safe flow control. The robust brass body and EPDM diaphragm deliver excellent resistance to steam and hot water media, while the NEMA 4X enclosure rating ensures dependable performance in wet, corrosive, and washdown environments.
Key Features
- 2-Way, Normally Closed (NC) pilot-operated design
- 3/4″ NPT pipe connection for straightforward installation
- 120VAC coil voltage for compatibility with standard HVAC control circuits
- 8.8 Cv flow coefficient for efficient, high-capacity flow
- Rated for steam service: 0–50 PSI operating pressure range
- Rated for hot water service: 0–150 PSI operating pressure range
- Brass body construction for corrosion resistance and durability
- EPDM diaphragm — excellent compatibility with steam and hot water media
- NEMA 4X enclosure rating — suitable for indoor/outdoor, wet, and corrosive locations
Technical Specifications
- SKU / Part Number: 8220G408
- Brand: ASCO
- Valve Type: 2-Way Solenoid Valve
- Operation: Normally Closed (NC), Pilot Operated
- Pipe Size: 3/4″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 8.8
- Steam Pressure Range: 0–50 PSI
- Hot Water Pressure Range: 0–150 PSI
- Body Material: Brass
- Diaphragm Material: EPDM
- Enclosure Rating: NEMA 4X
Applications
- Steam distribution and control systems
- Hot water heating and hydronic systems
- Commercial and industrial HVAC equipment
- Process control and fluid handling in corrosive environments
- Outdoor or washdown-rated installations requiring NEMA 4X protection
Why Choose the ASCO 8220G408?
ASCO is a globally recognized leader in solenoid valve technology, and the 8220G408 reflects that heritage. The pilot-operated design minimizes power consumption while handling higher flow rates, making it ideal for commercial HVAC and industrial steam systems. The NEMA 4X-rated enclosure protects the coil assembly from moisture, dust, and corrosive agents, extending service life in challenging installations. The EPDM diaphragm ensures long-term compatibility with steam and hot water, reducing maintenance frequency and downtime.
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