Caravanning · 13 September 2026
Whale products at Caravan Accessory Shop
Munster Simms Engineering, trading under the brand name Whale, produces water pumps, valves, taps and plumbing components for caravans, motorhomes and other low-voltage installations. The company is based in Bangor, Nort

Munster Simms Engineering, trading under the brand name Whale, produces water pumps, valves, taps and plumbing components for caravans, motorhomes and other low-voltage installations. The company is based in Bangor, Northern Ireland, and has built a reputation in recent years for product innovation, with the Whale name widely associated with quality and reliability.
Pumps and pump assemblies
- Watermaster High Flow Pump Assembly — £64.99
- Watermaster On Board Pump, 8 litre, 27 PSI, 12V — £129.99
- Watermaster Pump Assembly to fit Truma Ultraflow — £64.99
- Truma Crystal Mk2 Pump (replaces Maxi Pump) — £64.99
- Superfill 80 Submersible Filler Pump — £64.99
- High-Flow Submersible Pump, 12V — £49.99
- Standard Submersible Pump, 12V — £17.99
Controls, sockets and switches
- Watermaster Intelligent Pump Controller — £49.99
- Pressure Switch — £39.99
- Watermaster Socket for Pressurised Systems (White) — £47.99
- Watermaster EASI Slide Socket with Pressure Switch (sliding cover not included) — £44.99
- Surge Damper — £35.99
Filters and water treatment
- Aquasource Kit EM9433 — £74.99
- AquaSmart Filter — £17.99
- AquaSmart Filter/Plug Assembly (Blue Hose) — £44.99
- Aquasource Inline Filter, 12mm — £34.99
Fittings, spares and service items
- Watermaster Service Kit — £9.99
- Stem Adaptor, 12mm to 1/2” — £3.99
- Stem Tee Adaptor, 12mm — £4.75
- Watermaster Socket O-Ring — £0.85