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Under factory testing, our diaphragms last on the order of 1 million cycles. While this may seem like a lot of cycles, keep in mind that a pump running 24/7 at 72 rpm will reach one million cycles in a little over 10 days!
Under operating conditions in which the pump is generating significant positive or negative pressure (i.e., vacuum), diaphragm life may be shortened. Additionally, the choice of diaphragm material will affect diaphragm lifetime. The standard diaphragm we recommend for many applications is Buna-Nitrile, which has much better mechanical properties (e.g. tear resistance) than, say, silicone (our white diaphragm). (Additionally, the Buna-Nitrile in our diaphragm is an FDA-approved material.) You should inspect your Guzzler on a regular basis to look for signs of wear and tear on your pump diaphragm and its components.
Distinguishing the "400" from the "500" Guzzler pump
Different hose flanges available with Guzzler pumps
Installation instructions for Guzzler hand pumps
Installation instructions for flush-mount Guzzler hand pumps
Replacing the diaphragm in Guzzler "400" and "500" hand pumps
Replacing diaphragm in the Guzzler "600" hand pump
Replacing Diaphragm in GE-0nn1D(N) Motorized Pumps
Replacing flapper valves in Guzzler "400" series pump
Replacing flapper valves in Guzzler "500" series pump
Replacing duckbill valves in a Guzzler pump
Flapper valve orientation in motorized "2600" pumps
Changing from horizontal to vertical handle or vice versa on '400 & '500 series pumps
Wiring GE-0401,0451,0501 Pumps with Motor Terminal Box Connections
Wiring GE-0401,0451,0501 Pumps with Motor Lead Wire Connections
Mounting instructions for Sea-Lect Y-valves
Converting Y-Valve from 2-port to 3-port operation
Flush Mount '94 series Y-Valve: Disassembly and lubrication