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GARDNER DENVER
PZ-7 (PZG) Pump Model

PZ-7 (PZG) Pump Model

Product catalog summary

Specifications
The drilling service equipment has a maximum input of 550 BHP (410 kW) and can operate at a maximum of 145 RPM. It features a stroke length of 7 inches (178 mm) and a piston load capacity of 64,400 lbs. (29,211 kg). The average pump weight is 16,765 lbs. (7,620 kg), with a complete pump weight of 18,000 pounds when mounted on a large steel skid. The gear ratio is 4.625:1, and the ratings are based on 90% mechanical efficiency and 100% volumetric efficiency.

PZG (PZ-7) Drilling Service Ratings
The document provides detailed specifications for piston cylinder diameters ranging from 4 inches to 7 inches, with corresponding displacement per revolution and per minute, maximum PSI, and RPM values. For example, a 7-inch diameter piston has a displacement of 3.5 gallons per revolution and can handle a maximum of 1,673 PSI at 145 RPM.

Service Centers
The document lists several service centers for drilling and production pumps, including locations in Quincy, IL; Oklahoma City, OK; Tulsa, OK; Fort Worth, TX; and Odessa, TX, with contact information provided for each.

Standard Features
The equipment includes a nodular iron power frame, double-row-spherical roller bearings, dual roller bearing connecting rod, heat-treated alloy steel main gears, replaceable bronze crosshead slides, and a full splash lubrication system. It also features heat-treated alloy steel interchangeable fluid cylinders and three-rib API-7 urethane insert valves and seats.

Optional Equipment
Optional features include a steel skid, centrifugal suction charging pump, rubber valve inserts, suction and/or discharge dampeners, oil heat exchanger, external electric powered lube pump, fabricated suction manifold, and full open valves. It is noted that all installations must include a pressure relief valve in the discharge line near the pump.

Catalog excerpts

PZG (PZ-7) Triplex Drilling Mud Pump Maximum Input Stroke Length Piston Load Pump Weight Gear Ratio Drilling Service PZG (PZ-7) Drilling Service Ratings Weight: Complete pump with large steel skid-18,000 pounds. Ratings are based on 90% mechanical efficiency and 100% volumetric efficiency.

Open the catalog to page 1

PZG (PZ-7) Triplex Drilling Mud Pump Standard Features Nodular iron power frame, eccentric, connection rods, and crossheads Double-row-spherical roller beamings carry eccentric Double extended Jackshaft carried on heavy-duty straight roller bearings Dual roller bearing connecting rod Heat-treated alloy steel main gears are bolted to the eccentric Replaceable bronze crosshead slides Full splash lubrication, with oil pump to feed working parts Heat-treated alloy steel, interchangeable fluid cyclinders Three-rib API-7 urethane insert valves and seats Replaceable-type element oil filter and oil pressure...

Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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