The Original series is Wilden going back to basics, and there’s a reason it’s still around: the clamped-band construction is about as quick to open and service as a diaphragm pump gets. Loosen the clamps, swap the diaphragm, clamp it back — no long bolt-up, hardly any tools.
It’s the pump for straightforward transfer where you’d rather have fast maintenance and a proven, uncomplicated design than the last word in containment. Metal and plastic across the size range, with the usual choice of wetted materials and diaphragms to suit the fluid.
We supply Original-series pumps genuine and keep common builds in stock. If you’re torn between this and the bolted Advanced series, tell us the fluid and how critical leak-tightness is, and we’ll point you the right way.