Part Code: ASAB-SDDP18-46
Introducing the ASAB DDP18 Suction Housing — the main inlet-side housing component designed to support and seal the suction/check valve area on ASAB DDP18 double diaphragm pumps. This housing forms the structure for the suction-side flow path and valve seating surfaces, helping the pump maintain strong prime, consistent flow, and reliable sealing under continuous cycling.
A damaged or worn suction housing can create a stack of frustrating issues, including loss of prime, air ingress, reduced flow, pulsing/surging, or persistent weeping around the inlet section. Common causes are scoring from debris, cracked housings from over-tightening or impact, distorted sealing faces, or damaged threads from repeated fitting changes. Replacing the housing is the correct fix when sealing surfaces won’t clean up, threads are flogged out, or the valve cavity has been chewed up.
Whether you’re rebuilding the wet end, fixing stubborn prime issues, or restoring a pump that’s been run hard with contaminated material, the ASAB-SDDP18-46 is the right part to get your DDP18 suction side back to proper, job-ready condition.
Key Benefits
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Direct replacement suction housing for ASAB DDP18 pumps
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Restores correct sealing and support for suction-side valve components
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Helps resolve issues like prime loss, pulsing, low flow, and inlet weeping
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Correct fix when housing is scored, cracked, warped, or thread-damaged
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Supports stable inlet flow for smoother cycling and better efficiency
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Ideal for wet-end rebuilds and major services
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Workshop-ready component for reliable, long-term repair
What’s Included
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DDP18 Suction Housing — ASAB-SDDP18-46
Safety Check
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Isolate and depressurise first: Shut off air supply, bleed the airline fully, and confirm the pump and lines are not pressurised before disassembly.
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Chemical exposure: Wear gloves and eye protection — product can remain trapped in the suction/valve cavities.
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Inspect mating parts: Check the ball, seats, gaskets/O-rings, and valve cover surfaces — don’t bolt worn valve parts onto a new housing.
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Clean sealing faces: Dirt or old gasket material will cause leaks even with new components.
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Avoid over-tightening fittings: Use correct thread engagement/seal method and don’t reef on it — cracked housings love an overconfident spanner.
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Test gradually: Prime at low air pressure first, confirm steady flow/no bubbles, then ramp up to operating conditions.