This 28mm Compression Pump Valve connects directly to domestic and commercial central heating circulating pumps. Specifically, it provides a durable, secure, and highly reliable method of isolating the water flow to and from your heating pump during maintenance or replacement. Furthermore, thanks to the easy-to-operate quarter-turn butterfly handle, you significantly speed up servicing by eliminating the need to drain down the entire heating network.

Therefore, this 28mm Pump Valve works perfectly for larger domestic sealed systems, commercial heating networks, and heavy-duty underfloor heating manifolds. Additionally, it easily handles demanding applications, ensuring simple, mess-free pump swaps without introducing excess air or fresh water into the closed-loop system.

The valve features a robust construction with a high-quality brass body and a heavy-duty captive nut for a secure, flush seal against the pump housing. Moreover, the material is completely corrosion-resistant, built to withstand continuous thermal cycling, and rated for PN16 pressure networks to ensure long-term, leak-free operation. As a result, this solid build makes it fully dependable for both larger residential and demanding commercial heating installations.

Key Features & Benefits:

• Space-Saving Butterfly Design: The ergonomic T-handle configuration acts as a highly efficient control mechanism in confined spaces. Importantly, it allows full operational clearance around the pump housing where standard long levers cannot turn. Therefore, it guarantees fast and immediate isolation even in tight plant rooms, airing cupboards, or boiler compartments.

• Direct Pump Integration: The valve includes a heavy-duty swivel female running nut designed to thread directly onto standard circulating pumps. Consequently, you achieve a streamlined connection with fewer joints, reducing potential leak points compared to using separate adaptors and standard valves.

• PN16 Pressure Rated Reliability: The robust brass construction is engineered to safely handle high-pressure systems up to 16 bar. In particular, this solid rating provides excellent structural resistance against system pressure spikes and intense operating temperatures found in larger modern heating loops.

• Effortless System Maintenance: The quarter-turn ball valve mechanism isolates the pump instantly. For example, if you need to clean, repair, or upgrade a circulating pump, this localized isolation guarantees you can complete the job quickly and cleanly without disrupting the rest of the building’s heating system.

Technical Specifications:

• Product Type: Pump Isolating Valve (with Butterfly Handle)

• Product Code: ZL-4189B-28

• Connection Size: 28mm Compression × Pump Swivel Nut

• Pressure Rating: PN16 (16 Bar)

• Handle Type: Quarter-Turn Butterfly (T-Handle)

• Material: High-quality Brass

• Application: Central Heating, Commercial & Large Domestic Heating, Pump Isolation