STF NRF HW100 R22 Internally Equalized Thermostatic Expansion Valve
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STF NRF HW100 R22 Internally Equalized Thermostatic Expansion Valve
Description
The STF NRF HW100 Series thermostatic expansion valves regulate liquid refrigerant flow into the evaporator while maintaining stable superheat under changing refrigeration loads.
These internally equalized R22 valves are suitable for refrigeration, freezing, air-conditioning, commercial refrigeration and transport refrigeration systems. They feature adjustable static superheat, SAE external-thread connections and a replaceable inlet strainer.
Key Features
- Designed for R22 refrigeration systems
- Internally equalized configuration
- Stable and adjustable superheat control
- Factory static superheat setting: 3.5 K
- Static superheat adjustment range: 2–8 K
- Evaporating temperature range: -40°C to +10°C
- Safe working pressure: 3.0 MPa
- Maximum sensing-bulb temperature: 75°C
- Capillary tube length: 1 m
- SAE external-thread connections
- Replaceable inlet strainer
- MOP configurations available
Technical Specifications
| Specification | Value |
|---|---|
| Brand | STF |
| Manufacturer | Shanghai Thermostat Factory Co., Ltd. |
| Series | NRF |
| Product Type | Thermostatic Expansion Valve |
| Refrigerant | R22 |
| Equalization | Internal |
| Thermostatic Charge | HW100 |
| Evaporating Temperature Range | -40°C to +10°C |
| Safe Working Pressure | 3.0 MPa |
| Maximum Bulb Temperature | 75°C |
| Capillary Tube Length | 1 m |
| Connection Type | SAE External Thread |
| Factory Static Superheat | 3.5 K |
| Static Superheat Adjustment Range | 2–8 K |
| Inlet Strainer | Replaceable |
Model and Nominal Capacity
| Model | Nominal Capacity |
|---|---|
| NRF1-1/2HW100 | 1.5 TR / 5.28 kW |
| NRF2HW100 | 2 TR / 7.04 kW |
| NRF3HW100 | 3 TR / 10.56 kW |
| NRF4HW100 | 4 TR / 14.08 kW |
| NRF5HW100 | 5 TR / 17.60 kW |
| NRF6HW100 | 6 TR / 21.12 kW |
| NRF7-1/2HW100 | 7.5 TR / 26.40 kW |
| NRF12HW100 | 12 TR / 42.24 kW |
Selection Notice
Please verify the refrigerant, cooling capacity, evaporating temperature, condensing temperature, liquid subcooling, pressure drop, MOP requirement and connection size before ordering.
| Model |
NRF1-1/2HW100, NRF2HW100, NRF3HW100, NRF4HW100, NRF5HW100, NRF6HW100, NRF7-1/2HW100, NRF12HW100 |
|---|