China Suppliers Factory Air Conditioning Fitting Access Valves for Refrigeration Systems with Safety Features
Product Description
Access valve is mainly composed of components such as a nylon valve needle, valve seat, limit ring and housing. Its internal structure may vary depending on the type, such as a ball valve or a needle valve. On the outer surface of the check valve, the direction of the refrigerant flow is usually marked with an arrow to ensure that it is not connected in reverse during installation.
In the refrigeration system of a refrigerator, the main function of the access valve is to prevent the high-temperature and high-pressure vapor inside the compressor from flowing back into the evaporator when it stops, which could cause the evaporator to heat up and thus reduce the refrigeration efficiency. By connecting access valve, the high and low pressure inside the refrigeration system can be quickly balanced when the compressor stops, facilitating a restart.
Application Scenario
Widely applied in household refrigerators and air conditioners.
Provides reliable backflow prevention and pressure balancing.
Assists in system pressure detection and maintenance operations.
Features
- Equipped with imported valve inside of reliable performance.
- Double sealing ensure leak-tight.
- Copper tube of various lengths and hardness are available.
- Valve bonnet is knurled for easy handing.
Technical Parameters
HCFC and HFC
-25°C ~ +120°C
3.0MPa
3.0MPa
Structure
1. Flat cap
2. Needle valve cap
Specification
| Type | Connection | Size | Overall Dimension | Hexagonal S | Thread M | ||||
| A | B | φD | H | L | |||||
| Type A | 1/4 SAE | 1/8" | 60 | 14 | 3.17 | 94 | 11 | 7/16-20UNF | |
| 3/16" | 4.76 | ||||||||
| 1/4" | 90 | 6.35 | 124 | ||||||
| Type B | 1/4 SAE | 1/4" | 90 | 14 | 6.35 | 118 | 12 | 7/16-20UNF | |
| 1/2 SAE | 16 | 14 | 1/2-20UNF | ||||||
| 1/4 ACME | 1/2-16ACME | ||||||||
Pictures
Certificates
