W6626080 Spring-Loaded Flanged Check Valve - Stainless Steel, DN 80, L=50mm BRA.W6.626

Product detailed description

Spring-loaded flanged check valves are essential components in closed-loop systems where unidirectional flow must be maintained. These valves are commonly used in heating, ventilation, and air conditioning (HVAC) systems, water supply networks, chemical processing, and pumping stations. Installers and system designers rely on these valves to prevent reverse flow that could damage pumps, contaminate media, or disrupt system performance. The W6626080 model is designed for installation between flanges in systems operating under variable pressure and temperature conditions.

Its stainless steel construction ensures resistance to corrosion and wear, making it suitable for aggressive media and high-temperature environments. The spring-loaded disc ensures quick response to flow direction changes and maintains a tight seal when the system is at rest. The compact design with a length of 50 mm allows for installation in tight spaces, while the DN 80 nominal diameter accommodates medium to high flow rates. The valve is suitable for use with water containing up to 50% glycol, making it adaptable to a wide range of applications.

Technical parameters

Material: body	Stainless steel
Nominal diameter	DN 80
Nominal pressure	PN 16/PN 10
Weight	2.364 kg
Code	W6626080
Brand	IVAR

The technical parameters of the W6626080 determine its suitability for specific system conditions. The nominal diameter of DN 80 allows for flow rates typical of medium to large systems. The pressure ratings of PN 16 and PN 10 define the maximum allowable operating pressure, which is critical for system sizing and safety. The stainless steel body ensures compatibility with a wide range of fluids, including those with chemical additives. These parameters must be matched to the system’s design to ensure reliable operation and prevent mechanical failure.

Installation and connection

The W6626080 is installed between two flanges in a piping system. The valve must be aligned with the flow direction as indicated by the arrow on the body. The nominal diameter of DN 80 corresponds to standard flange sizes, and the connection must be tightened to the manufacturer’s torque specifications to ensure a leak-tight seal. The valve can be mounted in any position, but it is important to ensure that the spring is not compressed or distorted during installation. Common installation errors include incorrect orientation, insufficient tightening of flange bolts, and failure to check for debris in the pipeline before installation.

Compatibility and accessories

The W6626080 is compatible with standard flanged piping systems operating under the pressure and temperature conditions specified in the technical data. It is suitable for use with stainless steel and carbon steel flanges. No additional accessories are required for standard installation, but it is recommended to use high-quality gaskets and bolts to maintain the integrity of the flange connection. The valve is not listed as compatible with other models in the IVAR range, so it should be selected based on the specific system requirements and pressure ratings.

Technical background for designers

The W6626080 operates on a spring-loaded disc mechanism. When fluid flows in the correct direction, the disc is lifted against the spring force, allowing flow. When flow reverses, the spring forces the disc back against the seat, sealing the valve. The stainless steel body and disc provide resistance to corrosion and thermal expansion, making the valve suitable for high-temperature environments. The spring is made from AISI 316, a material known for its durability and resistance to chemical exposure. The valve is designed for integration into systems with variable flow rates and pressures, and its performance is influenced by the system’s operating conditions, including temperature fluctuations and media composition.

Service and operation

The W6626080 requires minimal maintenance due to its robust construction and sealed design. However, periodic inspections are recommended to ensure the disc and seat remain free from debris and wear. The valve should be checked for signs of leakage, especially after prolonged periods of inactivity. If the system is exposed to abrasive or particulate-laden media, the valve should be inspected more frequently. No specific service intervals are provided in the technical data, but it is advised to follow the manufacturer’s guidelines for maintenance and replacement of internal components.

Frequently asked questions

Can the W6626080 be used in systems with glycol-based fluids?
Yes, the valve is suitable for use with water containing up to 50% glycol, making it compatible with antifreeze and other glycol-based media.

Is the W6626080 suitable for installation in vertical pipelines?
Yes, the valve can be mounted in any position, including vertical pipelines, as long as the flow direction is aligned with the arrow on the body.

What is the maximum operating temperature for the W6626080?
The valve is rated for operation up to +350 °C, making it suitable for high-temperature applications such as heating systems and industrial processes.

Can the W6626080 be used in chemical processing systems?
Yes, the stainless steel construction and metal-to-metal sealing make it suitable for chemical processing systems where resistance to corrosion and chemical exposure is required.