HNA offers a full line of pistons for duplex and triplex mud pumps. All API types are available. Among these are:

Premium Bonded Urethane Pistons

This one piece bonded constructed piston has no joints to leak. But eliminates abrasive fluids between piston and liner. The fluid expanded lip is not damaged by high pressure and fast pump strokes. This Fail-Safe piston seals off to greater diameter as liner wears.

Pistons with replacement rubbers

Currently running in pumps using exotic muds and highest drilling pressures! Bonded construction - no joints, no leakage. Longer piston and liner life. This piston will run in higher-pressure, fast stroking pumps, and is resistant to oil base muds and other additives currently being used. This Premium Piston has been in service for years, providing unmatched performance under extreme drilling conditions. This one piece bonded unit provides the same series of advantages, being impervious to oil and other chemicals.