Product details
3112W/4 Check Valve | 1/2″ Flare | Castel
The Castel 3112W/4 Check Valve is a compact and reliable refrigeration valve designed to allow refrigerant flow in one direction while preventing reverse flow in HVAC and cooling systems. This ensures protection of compressors and critical components, improving system safety and efficiency.
This model features a SAE flare connection, allowing quick and secure installation, especially in service and maintenance applications.
As shown in the datasheet, the valve provides stable performance with low opening pressure and is compatible with a wide range of refrigerants used in HVAC and refrigeration systems .
Key Benefits
Prevents reverse refrigerant flow
Protects compressors and system components
Flare connection for easy installation
Compact design for small systems
Low opening pressure for efficient operation
Compatible with common refrigerants (A1 class)
High pressure rating up to 50 bar (725 psi MWP)
Durable construction for long service life
Specifications
Brand: Castel
Model: 3112W/4
Product Type: Check Valve
Connections
Connection Type: SAE Flare
Connection Size: 1/2″
Performance
Flow Coefficient (Kv): 1.8 m³/h
Minimum Opening Differential Pressure: 0.04 bar
Pressure & Temperature
Maximum Working Pressure (PS): 50 bar
Maximum Working Pressure (MWP): 725 psi
Minimum Temperature: -40°C
Maximum Temperature: +150°C
Compatibility
Refrigerants:
HCFC (R22)
HFC (R134a, R404A, R407C, R410A, R507)
HFO (R1234ze)
HFO + HFC Blends (R448A, R449A, R450A, R452A, R513A, R515A, R515B)
Applications
Commercial refrigeration systems
HVAC systems
Service and maintenance installations
Small refrigeration units
Refrigerant flow protection systems
FAQs
What is the function of this check valve?
It allows refrigerant flow in one direction and prevents reverse flow.
What is the connection type?
It uses a 1/2″ SAE flare connection.
What is the opening pressure?
It opens at a minimum differential pressure of 0.04 bar.
What is the pressure rating?
It is rated up to 50 bar, with a maximum working pressure of 725 psi.
Which refrigerants are supported?
It supports common HVAC refrigerants including HCFC, HFC, and HFO types.
