Carrier 4357 Solenoid Valve

The Carrier 4357 is a factory-authorized 24V water solenoid valve designed for precision flow control in residential and commercial HVACR systems. As a veteran-grade OEM replacement part, this component is engineered to handle high-cycling environments, specifically within humidifier units and hydronic fan coils. Operating on standard 24-volt control voltage, the valve features a robust brass body and stainless steel internal components to resist corrosion and ensure a reliable seat. With a pressure rating of up to 150 PSI and a temperature threshold of 180°F, this normally closed solenoid provides the fast response times necessary for maintaining tight humidity levels and system efficiency. The lightweight, compact design allows for straightforward integration into existing water lines, utilizing an electromagnetic coil to actuate the plunger for consistent open/close cycles without the dragging or sticking common in low-quality aftermarket alternatives.

Key Benefits:

• Direct OEM Compatibility: Ensures a perfect fit and matches factory performance specs for various Carrier, Bryant, and Payne models.
• Heavy-Duty Construction: Features a brass valve body and stainless steel internals for superior durability in water-based applications.
• Reliable 24VAC Actuation: Designed for standard low-voltage HVAC control circuits with minimal power consumption.
• Enhanced System Responsibility: Fast-acting electromagnetic operation improves the accuracy of water flow for humidification and heating tasks.
• Environmentally Rated: Often equipped with a NEMA 4/IP65 rated enclosure to protect the coil from moisture and environmental factors.

Common Questions:

Can the coil be replaced independently from the valve body?
Yes, in most field applications, the 24V coil can be swapped if the electrical winding fails, provided the valve body and internal plunger remain free of mineral scale or debris.

What is the proper mounting orientation for this valve?
For optimal service life and to prevent sediment buildup in the armature, it is standard practice to install the valve in a horizontal pipe run with the solenoid coil positioned vertically on top.

Does this valve require a specific flow direction?
Yes, you must observe the flow arrow stamped on the brass body. Installing the Carrier 4357 against the direction of flow will prevent the valve from seating correctly and may lead to constant weeping or system bypass.

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.