Available with 2 to 5,000 litre capacity, our expansion vessels are suitable for both domestic and commercial applications. The range also includes replacement membranes and expansion vessel fixing kits for fast and simple installation.

Wyestrainer mesh size

Reliance Valves Expansion Vessels ensure safe operating levels by preventing pressure from building up in sealed heating systems and cold water systems.

Series 77F-DI-125, 77F-DI-FDA-125 Flanged, Wye Pattern, Cast Iron Strainers feature 304 stainless steel perforated screens, a cast iron flanged retainer cap and a drain/blowoff connection furnished with a closure plug. Series 77F-DI-FDA-125 also features a double coated, heat fused epoxy coating on the interior and exterior for FDA approved sanitary applications.

Our Aquasystem range features replaceable membranes to allow quick and easy servicing in situ. It also prevents water from coming into contact with the shell, eliminating corrosion and extending product lifespan.