Description
York S1-1TVM4F1 Thermostatic Expansion Valve Overview
The York S1-1TVM4F1 is a factory-engineered thermostatic expansion valve (TXV) designed for reliable, precise refrigerant metering in residential and light-commercial cooling systems. Built specifically for use with R-410A refrigerant, this 2-ton-rated valve delivers consistent superheat control to protect the compressor and maximize system efficiency.
Key Features
- Refrigerant: R-410A compatible
- Capacity: 2 Ton
- Inlet/Outlet Connection Size: 5/8″ x 5/8″
- Capillary Tube Length: 30″
- Type: Thermostatic Expansion Valve (TXV)
- OEM York replacement part — direct-fit for compatible York systems
Why Choose a TXV?
A thermostatic expansion valve actively modulates refrigerant flow in response to real-time load changes, maintaining optimal superheat at the evaporator outlet. Compared to fixed-orifice metering devices, a TXV improves part-load efficiency, reduces compressor cycling stress, and helps extend overall system life.
Application
- Designed for York split-system air conditioners and heat pumps using R-410A refrigerant
- Suitable for 2-ton residential and light-commercial cooling applications
- 30″ capillary tube provides flexible bulb placement at the evaporator outlet
- 5/8″ x 5/8″ connections for straightforward installation into existing linesets
Installation Notes
Always follow York’s installation guidelines and local codes when replacing or installing a TXV. Ensure the system is properly evacuated and charged with R-410A to manufacturer specifications. Secure the sensing bulb firmly to the suction line and insulate as required for accurate superheat sensing.
