HAM-LET® H-800 1-Piece Ball Valves

The Ham-Let® H-800 1-piece ball valve series is designed for general service and instrumentation panels. The 1-piece ball valve design enables low and high working pressure and accommodates a wide temperature range with high life cycle.

The 1-piece ball valve body design reduces possibility of shell leakage. The valves offer tight shutoff, long-life service and low operating torque.


  • The H-800 1-piece ball valve design has been tested for Burst and Proof.
  • Standard testing for each H-800 valve includes testing with nitrogen at 1000 psig.
  • Each valve is tested for leakage through the shell, packing and ball seats.
  • Maximum allowable leakage across the seat is 0.1 std cc/min.

Packing Adjustment:

  • Due to the varied service applications of the ball valve, packing adjustment may occasionally be necessary.
  • Packing is factory adjusted to 1000 psig service. Initial packing adjustment is recommended after installation and prior to start-up.
  • Please find more information on H-500 under Installation Instructions.

Ham-Let® 1-piece ball valves are designed for fully open or fully closed operation only. After a period of non-operation, valve’s braking torque may rise.

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