Safety Relief Valve Afriso 42375 for Heating Systems GW 1/2" x 3/4"

Safety Relief Valve Afriso 42375 for Heating Systems GW 1/2" x 3/4" is a pressure safety device designed for central heating circuits, boilers and hot-water systems. The valve opens automatically to discharge excess fluid when system pressure exceeds a preset limit, protecting components and piping from overpressure. Constructed for professional heating installations and maintenance, this model features a compact design and standard threaded connection size suitable for many residential and small commercial systems.

Advantages

The Afriso 42375 safety relief valve provides reliable overpressure protection through a simple mechanical mechanism that operates without external power. Its threaded GW 1/2" x 3/4" connection allows straightforward integration into existing piping, while durable materials ensure long-term resistance to corrosion and thermal stresses. The valve's precise release characteristics help maintain safe operating pressure, reduce downtime, and prevent damage to boilers, heat exchangers and distribution lines.

Suitable for

• Central heating systems and domestic boiler installations
• Hot-water cylinder and storage tank protection
• Small commercial heating circuits requiring overpressure protection
• Replacement or maintenance of existing pressure relief devices with matching connection sizes

Key specifications

• Connection size: GW 1/2" x 3/4" (threaded)
• Function: automatic pressure relief for liquid systems
• Application: central heating and hot-water systems
• Material: corrosion-resistant construction suitable for heating fluids
• Mounting: inline installation on pressure piping or boiler outlets

How to use

Install the safety relief valve in the designated pressure relief position on the boiler, hot-water tank or heating circuit using the GW 1/2" x 3/4" threaded connection. Ensure correct orientation and a tight, leak-free fit using appropriate sealing materials compatible with heating systems. Set or verify the discharge pressure according to system design and local regulations, and confirm the outlet is routed to a safe drain point. Periodically inspect the valve for leaks, corrosion and proper operation as part of routine system maintenance.

Usage recommendations

Use the valve only in closed heating systems with compatible fluids and within the designed temperature and pressure ranges. Observe local codes for installation, test the relief function after installation, and replace the valve if signs of malfunction, leakage or corrosion appear. For installation and pressure setting, refer to a qualified heating technician.