ASAB DDP18 Replacement Parts #20 - Copper Latch

Part Code: ASAB-SDDP18-20

Introducing the ASAB DDP18 Copper Latch — a dedicated latch/retainer component used in ASAB DDP18 double diaphragm pump assemblies to securely hold mating parts in position and maintain consistent clamping under vibration and cycling. It’s one of those small bits that does a big job: keeping key assemblies seated correctly so the pump stays sealed and stable in service.

If a latch is bent, fatigued, worn at the contact points, or won’t hold tension, you can end up with nuisance issues like loose fitment, movement under load, repeat weeping/leaks, or parts fretting and wearing prematurely. Replacing the latch during servicing or after a strip-down is a smart move—especially if the old one’s been removed a few times and doesn’t “bite” like it used to.

Whether you’re rebuilding a DDP18, fixing a pump that’s been knocked around on site, or just doing preventative maintenance properly, the ASAB-SDDP18-20 is the right part to keep your DDP18 clamped up and behaving.

Key Benefits

• Direct replacement copper latch for ASAB DDP18 assemblies

• Provides secure retention/clamping to help maintain proper sealing and alignment

• Helps prevent movement that can cause weeping, fretting, and premature wear

• Ideal replacement when the original latch is bent, fatigued, or won’t hold tension

• Supports reliable operation under vibration and repeated cycling

• Smart to replace during major services / rebuilds

• Workshop-ready spare to reduce downtime

What’s Included

• DDP18 Copper Latch — ASAB-SDDP18-20

Safety Check

• Isolate and depressurise first: Shut off air supply, bleed the airline fully, and confirm the pump is not pressurised before any strip-down.

• Pinch point hazard: Keep fingers clear when seating/removing latches—use pliers if required and control the latch as it releases.

• Inspect mating surfaces: If the latch seat or groove is damaged, a new latch won’t hold properly—check for wear, burrs, or deformation.

• Don’t reuse bent hardware: If the old latch is distorted or cracked, bin it—latches can let go at the worst time.

• Test after assembly: Bring air pressure up slowly and check for movement, leaks, and normal cycling before returning to service.

ASAB – Engineered for Performance, Built to Last.