Sanhua International SHF(L)-7H-34U Valve

The Sanhua International SHF(L)-7H-34U Valve is a professional-grade 4-way reversing valve engineered for high-performance heat pump systems and unitary air conditioning units. Designed to manage refrigerant flow direction between heating and cooling cycles, this valve features a 3/8 inch ODF suction connection and a 1/2 inch ODF discharge connection, ensuring compatibility with standard HVACR piping. Its pilot valve is secured to the main body with reinforced screws to provide superior anti-vibration performance, a critical factor for long-term reliability in residential and light commercial condensers. The unit is optimized for R410A refrigeration systems but maintains broad compatibility with R22, R134a, R404A, and R407C. With a maximum operating pressure (PS) of 650 psig (4.5 MPa) and a nominal cooling capacity of approximately 2.5 tons depending on conditions, the Sanhua SHF series is a staple for contractors prioritizing low leakage rates and high internal pressure differentials in the field.

• Universal Compatibility: Works seamlessly with all common HCFC and HFC refrigerants, including high-pressure R410A applications.
• Enhanced Reliability: Solder connection at the pilot tube and valve body minimizes leak points compared to traditional designs.
• Advanced Pilot Geometry: The straight sleeve structure of the pilot valve reduces abnormal recoil, ensuring smooth switching under varying load conditions.
• Energy Efficiency: Designed for use with bi-stable coils to maintain position with nearly zero power consumption.

What is the maximum operating temperature for this valve during installation?
When brazing the ODF connections, technicians must ensure the valve body temperature does not exceed 248°F (120°C). Using a wet rag or heat-sink paste is mandatory to prevent internal seal damage.

Does this valve include the solenoid coil?
The SHF(L)-7H-34U is the valve body only. Coil selection depends on your specific voltage requirements (typically 24V, 120V, or 240V) and must be sourced separately to match the system's control circuit.

Can this valve be mounted in any orientation?
For optimal performance, it is recommended to install the valve with the body axis in a horizontal alignment or with the coil facing upwards to prevent debris accumulation in the pilot assembly.

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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.