W6626032 Spring-loaded Wafer Check Valve, Stainless Steel - DN 32; L=28mm BRA.W6.626

Product detailed description

Spring-loaded wafer check valves are commonly used in heating, ventilation, and air conditioning (HVAC) systems, water distribution networks, pumping stations, and chemical processing environments. These valves ensure unidirectional flow and prevent backflow in pressurized systems. Installers working in residential, commercial, and industrial settings encounter these valves in boiler circuits, heat exchangers, and piping systems where reverse flow could damage equipment or compromise safety.

Proper selection and installation of a check valve depend on system pressure, media type, and temperature conditions. The valve must be compatible with the fluid being transported and the operating environment to ensure long-term reliability. In HVAC and industrial applications, check valves help maintain system integrity and prevent thermal shock or contamination due to reverse flow.

Technical parameters

Material: body	A351 CF8M stainless steel
Nominal diameter	DN 32
Nominal pressure	PN 16/PN 10
Weight	0.545 kg
Code	W6626032
Brand	IVAR

The valve’s nominal diameter (DN 32) determines its suitability for specific pipe sizes and flow rates. The maximum operating pressure (PN 16/PN 10) defines the pressure limits under which the valve can safely function. These parameters are essential for determining whether the valve meets the hydraulic requirements of the system and for ensuring compatibility with adjacent components such as flanges and fittings.

Installation and connection

To install the wafer check valve between flanges, align the valve with the flange faces and secure it using standard bolts. Ensure that the flange surfaces are clean and free of debris to maintain a tight seal. The valve can be mounted in any orientation, but the flow direction must be verified according to the arrow marked on the body. Common installation errors include reversing the flow direction and misalignment of the flange faces, which can cause leakage or mechanical stress on the valve body. After installation, inspect the flange bolting pattern and torque the bolts evenly to avoid uneven loading.

Compatibility and accessories

This valve is compatible with standard PN 16/PN 10 flanged connections and is suitable for use with stainless steel piping systems. For proper sealing, ensure that the mating flanges are made of compatible materials and that the gasket type matches the system requirements. Additional components such as flanges, bolts, and gaskets may need to be sourced separately depending on the system configuration.

Technical background for designers

The spring-loaded check valve operates by allowing forward flow and closing automatically when backflow occurs. The spring ensures that the disc returns to its closed position quickly and reliably. The body, disc, and partition are made of A351 CF8M stainless steel, which offers resistance to corrosion and thermal expansion. The spring is made of AISI 316 stainless steel, providing durability in aggressive environments. The metal-to-metal sealing design eliminates the need for additional sealing materials, making it suitable for high-temperature and chemically active media. The valve’s performance depends on the correct selection of spring strength and the accuracy of the system’s pressure and temperature conditions.

Service and operation

During operation, the valve requires minimal maintenance due to its robust construction and self-closing mechanism. Regular inspections should focus on checking for signs of leakage, corrosion, or mechanical wear. Ensure that the flange bolts remain tightened and that the valve is free of obstructions. No scheduled service intervals are specified in the provided data, but visual checks during routine maintenance are recommended to confirm continued functionality.

Frequently asked questions

Can this valve be used with glycol solutions?
Yes, the valve is suitable for water containing up to 50% glycol, making it appropriate for antifreeze applications in HVAC systems.

Is this valve certified for potable water applications?
Yes, the valve is approved for use with drinking water according to the relevant standards.

What is the minimum backpressure required for the valve to close?
The valve requires a minimum backpressure of 0.1 bar to ensure proper closure and prevent unintended flow reversal.

Can this valve be installed in any orientation?
Yes, the valve can be mounted in any position, but the flow direction must be confirmed according to the arrow on the body to ensure correct operation.