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Frequently asked questions

The filter valve backwashes a filtration media bed (like a sediment or carbon vessel), while the softener valve regenerates a resin bed with brine — they use the same WS1.25 CI platform but are set up for different media and cycles.

It includes the stack and pistons — the core wearing components inside the valve — for a full internal service, and is the same kit used across both the WS1.25 and WS1.5 valves.

Yes — the WS1 & WS1.25 servicing wrench is the correct tool for accessing the valve's internals without damaging the housing; standard spanners aren't a substitute.

Both options exist on this platform — timer-controlled valves regenerate on a fixed schedule, metered valves regenerate based on actual water usage. Check the specific listing for which control type it is.

It's designed for larger simplex systems, typically in the 75L–200L resin bed range — check the specific product listing for the exact flow rating of your model.