✨ New Arrivals Just Dropped!Explore
Gate Type Pump Valve Brass 22mm 28mm Compression — Central Heating Circulator Pump Isolation Valve
HomeStore

Gate Type Pump Valve Brass 22mm 28mm Compression — Central Heating Circulator Pump Isolation Valve

Gate Type Pump Valve Brass 22mm 28mm Compression — Central Heating Circulator Pump Isolation Valve

The Gate Type Pump Valve is a brass compression isolation valve specifically designed for connecting and isolating domestic central heating circulating pumps. Available in 22mm (PV22G) for standard domestic pump connections and 28mm (PV28G) for larger systems. Each valve combines a compression connection to the copper pipework with a 1½" BSP female thread that connects directly to the pump union, allowing the pump to be isolated and removed for service or replacement without draining the entire heating system. Constructed from brass with rubber seals, these valves are a standard component of any pump installation or replacement, providing a straightforward way to service or swap out a circulating pump with minimal disruption.

⚡ PV22G vs PV28G — Which size?
PV22G (22mm): For most domestic CH systems — fits standard 22mm primary pipework. Compatible with all domestic circulating pumps with a 1½" BSP union connection, including Grundfos, Wilo, and Fernox pump models commonly used in standard boiler installations.
PV28G (28mm): For larger domestic and light commercial installations using 28mm primary pipework — heat pump primary circuits, larger boiler systems, or where the primary flow and return are 28mm. Also connects to the standard 1½" BSP pump union fitting.
Features & Benefits
✔ Isolate the Pump Without Draining Down
Fitted on the pump inlet and outlet, a pair of gate pump valves allows the circulating pump to be isolated and removed without draining the heating system. Close both valves, remove the pump, service or replace it, refit, and reopen — with no need to drain radiators, refill the system, or re-dose inhibitor. This is the primary purpose of pump valves and the reason every pump installation should include a pair.
✔ Direct Pump Connection — 1½" BSP Female Thread
The pump-side of the valve has a 1½" BSP female thread — the industry standard for domestic circulating pump unions (Grundfos UPS/Alpha, Wilo, and equivalent models). This screws directly onto the pump's union tail without additional adaptors. The pipework side is a standard compression fitting onto copper tube.
✔ Gate Type — Full Bore When Open
The gate valve mechanism provides full bore flow when fully open — the wedge gate lifts entirely clear of the flow path, creating no restriction in the open position. This is important for pump isolation valves, where any restriction on the suction or discharge side increases the pump's effective head requirement and reduces flow. A full-bore open position also allows accurate flow measurements and system balancing to be carried out with the valves fully open.
✔ Brass Construction — Long Service Life
Valve body, gate, and compression components are brass — the standard material for heating system valves in the UK. Brass resists dezincification in typical domestic heating water conditions and maintains integrity at central heating operating temperatures and pressures without degradation or seal failure over a normal service life of many years.
✔ Compression Fittings — No Soldering
Compression connections (with olive and nut) on the pipework side mean no blowtorch is required — the valve can be fitted to existing 22mm or 28mm copper tube without heat, making it suitable for retrofit in occupied premises or confined plant rooms where open flame is inadvisable.
✔ Universal — Fits All Domestic Circulating Pumps
The standard 1½" BSP union interface is compatible with all domestic central heating circulating pumps — Grundfos, Wilo, DAB, Fernox, and all equivalent makes. Whether fitting a new pump or replacing an existing installation without pump valves, a pair of PV22G or PV28G valves will connect correctly without modification.
Technical Specifications
Part Numbers PV22G (22mm) / PV28G (28mm)
Valve Type Gate type — full bore when open
Pipework Connection Compression — 22mm (PV22G) / 28mm (PV28G)
Pump Connection 1½" BSP female thread (standard pump union)
Body Material Brass
Seals Rubber
Application Domestic central heating circulating pump isolation
Compatible Pumps All domestic circulating pumps with 1½" BSP union — Grundfos, Wilo, DAB and equivalents
Sold As Singles (a pair is required per pump — one inlet, one outlet)

A complete pump installation requires two valves — one on the inlet (suction) and one on the outlet (discharge) side of the pump.

Select Type
From $4.72

Original: $13.50

-65%
Gate Type Pump Valve Brass 22mm 28mm Compression — Central Heating Circulator Pump Isolation Valve—

$13.50

$4.72

Gate Type Pump Valve Brass 22mm 28mm Compression — Central Heating Circulator Pump Isolation Valve

The Gate Type Pump Valve is a brass compression isolation valve specifically designed for connecting and isolating domestic central heating circulating pumps. Available in 22mm (PV22G) for standard domestic pump connections and 28mm (PV28G) for larger systems. Each valve combines a compression connection to the copper pipework with a 1½" BSP female thread that connects directly to the pump union, allowing the pump to be isolated and removed for service or replacement without draining the entire heating system. Constructed from brass with rubber seals, these valves are a standard component of any pump installation or replacement, providing a straightforward way to service or swap out a circulating pump with minimal disruption.

⚡ PV22G vs PV28G — Which size?
PV22G (22mm): For most domestic CH systems — fits standard 22mm primary pipework. Compatible with all domestic circulating pumps with a 1½" BSP union connection, including Grundfos, Wilo, and Fernox pump models commonly used in standard boiler installations.
PV28G (28mm): For larger domestic and light commercial installations using 28mm primary pipework — heat pump primary circuits, larger boiler systems, or where the primary flow and return are 28mm. Also connects to the standard 1½" BSP pump union fitting.
Features & Benefits
✔ Isolate the Pump Without Draining Down
Fitted on the pump inlet and outlet, a pair of gate pump valves allows the circulating pump to be isolated and removed without draining the heating system. Close both valves, remove the pump, service or replace it, refit, and reopen — with no need to drain radiators, refill the system, or re-dose inhibitor. This is the primary purpose of pump valves and the reason every pump installation should include a pair.
✔ Direct Pump Connection — 1½" BSP Female Thread
The pump-side of the valve has a 1½" BSP female thread — the industry standard for domestic circulating pump unions (Grundfos UPS/Alpha, Wilo, and equivalent models). This screws directly onto the pump's union tail without additional adaptors. The pipework side is a standard compression fitting onto copper tube.
✔ Gate Type — Full Bore When Open
The gate valve mechanism provides full bore flow when fully open — the wedge gate lifts entirely clear of the flow path, creating no restriction in the open position. This is important for pump isolation valves, where any restriction on the suction or discharge side increases the pump's effective head requirement and reduces flow. A full-bore open position also allows accurate flow measurements and system balancing to be carried out with the valves fully open.
✔ Brass Construction — Long Service Life
Valve body, gate, and compression components are brass — the standard material for heating system valves in the UK. Brass resists dezincification in typical domestic heating water conditions and maintains integrity at central heating operating temperatures and pressures without degradation or seal failure over a normal service life of many years.
✔ Compression Fittings — No Soldering
Compression connections (with olive and nut) on the pipework side mean no blowtorch is required — the valve can be fitted to existing 22mm or 28mm copper tube without heat, making it suitable for retrofit in occupied premises or confined plant rooms where open flame is inadvisable.
✔ Universal — Fits All Domestic Circulating Pumps
The standard 1½" BSP union interface is compatible with all domestic central heating circulating pumps — Grundfos, Wilo, DAB, Fernox, and all equivalent makes. Whether fitting a new pump or replacing an existing installation without pump valves, a pair of PV22G or PV28G valves will connect correctly without modification.
Technical Specifications
Part Numbers PV22G (22mm) / PV28G (28mm)
Valve Type Gate type — full bore when open
Pipework Connection Compression — 22mm (PV22G) / 28mm (PV28G)
Pump Connection 1½" BSP female thread (standard pump union)
Body Material Brass
Seals Rubber
Application Domestic central heating circulating pump isolation
Compatible Pumps All domestic circulating pumps with 1½" BSP union — Grundfos, Wilo, DAB and equivalents
Sold As Singles (a pair is required per pump — one inlet, one outlet)

A complete pump installation requires two valves — one on the inlet (suction) and one on the outlet (discharge) side of the pump.

Product Information

Shipping & Returns

Description

The Gate Type Pump Valve is a brass compression isolation valve specifically designed for connecting and isolating domestic central heating circulating pumps. Available in 22mm (PV22G) for standard domestic pump connections and 28mm (PV28G) for larger systems. Each valve combines a compression connection to the copper pipework with a 1½" BSP female thread that connects directly to the pump union, allowing the pump to be isolated and removed for service or replacement without draining the entire heating system. Constructed from brass with rubber seals, these valves are a standard component of any pump installation or replacement, providing a straightforward way to service or swap out a circulating pump with minimal disruption.

⚡ PV22G vs PV28G — Which size?
PV22G (22mm): For most domestic CH systems — fits standard 22mm primary pipework. Compatible with all domestic circulating pumps with a 1½" BSP union connection, including Grundfos, Wilo, and Fernox pump models commonly used in standard boiler installations.
PV28G (28mm): For larger domestic and light commercial installations using 28mm primary pipework — heat pump primary circuits, larger boiler systems, or where the primary flow and return are 28mm. Also connects to the standard 1½" BSP pump union fitting.
Features & Benefits
✔ Isolate the Pump Without Draining Down
Fitted on the pump inlet and outlet, a pair of gate pump valves allows the circulating pump to be isolated and removed without draining the heating system. Close both valves, remove the pump, service or replace it, refit, and reopen — with no need to drain radiators, refill the system, or re-dose inhibitor. This is the primary purpose of pump valves and the reason every pump installation should include a pair.
✔ Direct Pump Connection — 1½" BSP Female Thread
The pump-side of the valve has a 1½" BSP female thread — the industry standard for domestic circulating pump unions (Grundfos UPS/Alpha, Wilo, and equivalent models). This screws directly onto the pump's union tail without additional adaptors. The pipework side is a standard compression fitting onto copper tube.
✔ Gate Type — Full Bore When Open
The gate valve mechanism provides full bore flow when fully open — the wedge gate lifts entirely clear of the flow path, creating no restriction in the open position. This is important for pump isolation valves, where any restriction on the suction or discharge side increases the pump's effective head requirement and reduces flow. A full-bore open position also allows accurate flow measurements and system balancing to be carried out with the valves fully open.
✔ Brass Construction — Long Service Life
Valve body, gate, and compression components are brass — the standard material for heating system valves in the UK. Brass resists dezincification in typical domestic heating water conditions and maintains integrity at central heating operating temperatures and pressures without degradation or seal failure over a normal service life of many years.
✔ Compression Fittings — No Soldering
Compression connections (with olive and nut) on the pipework side mean no blowtorch is required — the valve can be fitted to existing 22mm or 28mm copper tube without heat, making it suitable for retrofit in occupied premises or confined plant rooms where open flame is inadvisable.
✔ Universal — Fits All Domestic Circulating Pumps
The standard 1½" BSP union interface is compatible with all domestic central heating circulating pumps — Grundfos, Wilo, DAB, Fernox, and all equivalent makes. Whether fitting a new pump or replacing an existing installation without pump valves, a pair of PV22G or PV28G valves will connect correctly without modification.
Technical Specifications
Part Numbers PV22G (22mm) / PV28G (28mm)
Valve Type Gate type — full bore when open
Pipework Connection Compression — 22mm (PV22G) / 28mm (PV28G)
Pump Connection 1½" BSP female thread (standard pump union)
Body Material Brass
Seals Rubber
Application Domestic central heating circulating pump isolation
Compatible Pumps All domestic circulating pumps with 1½" BSP union — Grundfos, Wilo, DAB and equivalents
Sold As Singles (a pair is required per pump — one inlet, one outlet)

A complete pump installation requires two valves — one on the inlet (suction) and one on the outlet (discharge) side of the pump.