Part Code: ASAB-SDDP42-27
Introducing the ASAB DDP42 Fixed Plate — a key structural plate used in ASAB DDP42 double diaphragm pump assemblies to provide a stable mounting/clamping surface for internal components and maintain correct alignment of the diaphragm stack and wet-end hardware. Built to handle constant cycling loads and vibration, the fixed plate helps keep sealing faces true and clamp pressure even — which is exactly what you want for reliable prime and consistent flow.
A fixed plate that’s bent, scored, cracked, or worn on the sealing/mating surface can lead to headaches like repeat leaks, uneven diaphragm clamp, premature diaphragm wear, inconsistent cycling, or difficulty keeping the pump sealed after service. Replacing the plate is the right move when the original won’t clean up, won’t sit flat, or has been damaged by impact or over-torquing.
Whether you’re doing a full wet-end rebuild, replacing diaphragms and refreshing the stack properly, or fixing a pump that just won’t seal up no matter how many gaskets you throw at it, the ASAB-SDDP42-27 is the correct part to restore proper assembly alignment and sealing integrity.
Key Benefits
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Direct replacement fixed plate for ASAB DDP42 assemblies
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Maintains correct alignment and clamping stability under cycling load
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Supports even compression for better sealing integrity and reliability
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Helps prevent issues like repeat leaks, uneven clamp, and premature wear
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Ideal to replace during major services / diaphragm rebuilds
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Correct fix when original plate is warped, scored, cracked, or deformed
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Workshop-ready component for dependable, long-life repair
What’s Included
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DDP42 Fixed Plate — ASAB-SDDP42-27
Safety Check
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Isolate and depressurise first: Shut off air supply, bleed the airline fully, and confirm the pump is not pressurised before disassembly.
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Chemical exposure: Wear gloves and eye protection — residual product can remain trapped in chambers and manifolds.
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Keep parts in order: Note plate orientation and stack order during strip-down to avoid incorrect reassembly.
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Inspect mating components: Check diaphragms, pads, seals/O-rings, and valve parts—don’t clamp worn parts against a new plate.
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Even tightening: Reassemble using a cross-pattern and correct torque to avoid warping and pinching seals.
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Test gradually: Bring air pressure up slowly, confirm smooth cycling and no leaks, then return to operating conditions.