7HDD-10-M853
Compact, rugged, and durable design the 7H piston features oil-less operation, piston ring design that provides consistent flows throughout the service life of the unit, and high torque motors. Built to last, the 7H also features corrosion resistant internal components, easily replaceable wear items and proprietary Teflon filled piston rings, help to maximize uptime and minimize downtime.
Distributor LookupSpecifications
FAQs
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Can water be pumped through my piston unit?
No, clean dry air only.
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My piston pump is leaking around the heads is this normal?
The piston unit is not leak proof, leakage around the head is normal, and doesn’t affect the specified flow rate of unit.
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What kind of oil do I need for my piston unit?
None, Gast piston units are oilless, and do not require lubrication.
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Can I pump combustible gas through my piston pump?
No, none of Gast models are designed to pump combustible gases.
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I received my dual voltage unit, wired it for 115 volt power, it runs very slow and lopes. What is wrong?
The unit is wired for high voltage from the factory, check the motor label to see how to rewire unit to for low voltage.
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What can I use to clean my piston unit with?
Gast flushing solvent AH255D, if this is not available you can use electrical contact cleaner.
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Are there repair kits available for my piston unit?
Yes, check the operation manual for kit required. If you don’t have the manual, go to Technical Documents and choose manual.
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What comes in a repair kit?
Rings, seals, rider ring, intake & exhaust valves, and gaskets for the head and cylinder.
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Can I replace the motor of my piston unit?
The motor can not be replaced in the field, the unit should be sent to an authorized service center.
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Can I replace the rod assemblies in my piston unit?
The rod assembly can not be replaced in the field, the unit should be sent to an authorized service center.
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What does the model number mean?
For an explanation of the Piston model numbers please click here.
