What causes diaphragm rupture in DP miniature diaphragm pumps? How to replace it?

DP series miniature diaphragm pumps may experience diaphragm rupture during prolonged use.

Common causes include chemical incompatibility with pumped media, abrasion from particles exceeding 10mm, operation beyond 1.0MPa pressure limit, and natural aging of EPDM rubber.

Replacement requires power disconnect and system pressure release before disassembling the pump head.

Clean installation surfaces and align new diaphragm precisely with centering shaft and positioning holes.

Uniformly tighten pump head screws to 0.5-0.8N·m torque in crisscross pattern.

Post-installation testing should include manual rotation check and pressurization test.