Shijiazhuang Dongli Petroleum Machinery (DLSY) stocks 429 distinct replacement parts for the Gardner Denver PZ11 mud pump (also listed as GD PZ11 7500PSI), including 33 liner, 52 piston, 18 valve, and 7 spring variants plus crosshead, bearing, and frame hardware. Factory data rates the PZ11 at 7500 PSI maximum working pressure and 115 SPM rated speed. Our fluid-end modules are machined from forged alloy steels such as 35CrMo, 40CrMnMo, and 4135/4140, manufactured to API 7K with quench-and-temper heat treatment and autofrettage processing for extended fatigue life.
FAQ
What fluid-end parts do you stock for the Gardner Denver PZ11?
We stock 429 distinct items for the PZ11, including 33 liner variants, 52 piston variants, 18 valve variants, and 7 spring variants, plus crossheads, crosshead pin roller bearings, connecting rod bearings, gears, and frame hardware.
What are the factory specifications of the PZ11?
Factory data lists a maximum working pressure of 7500 PSI and a rated speed of 115 SPM. By liner size, maximum pressures run from 3905 PSI (7 in) up to 7500 PSI (5 in).
Which liner sizes do you stock for the PZ11?
The factory liner table covers 7 in, 6.5 in, 6 in, 5.5 in, and 5 in sizes, with maximum pressures from 3905 PSI to 7500 PSI. We stock liners across this range — tell us your target pressure for a recommendation.
What materials are your PZ11 fluid-end modules made from?
Our modules use forged alloy steels such as 35CrMo, 40CrMnMo, and 4135/4140, processed with quench-and-temper heat treatment and autofrettage under API 7K manufacturing standards for improved fatigue life.
Do you ship PZ11 parts to Canada and the United States?
Yes. We export to Canada, the United States, and international oil & gas markets. Parts are classified under HS code 84139100.
How do I confirm a PZ11 part number before ordering?
Send us your part number or a description from the PZ11 parts book — such as a crosshead pin bearing or jackshaft key — and we will verify it against our stocked inventory.