Three Piece High Pressure Ball Valves
–
H25 Valves Series
Three Piece High Pressure Ball Valves
–
H25 Valves Series
11
Assembly
Spring return actuator
For Normally Closed (NC) valve (valve closed on air
failure), turn the valve to its closed position.
For Normally Open (NO) valve (valve opened on air
failure), turn the valve to its open position.
Double acting actuator
Valve position is irrelevant.
1.
Smear grease (thin Layer) on the bolt’s threads,
valve stem flats and adaptor square.
2.
Bolt (hand tight) the bracket to the valve ISO5211
pad.
3.
Place the adaptor on the valve stem, check that the
adaptor fits snugly onto the valve stem without play
and is in the correct angular relationship to the
actuator gear shaft.
4.
Make sure the adaptor sits on the valve stem tip, and
there is an air gap between the stem nut lock clip and
the adaptor bottom plan.
5.
Place the actuator on the bracket, making sure that
the indicator shows the correct valve position (open or
closed).
6.
Assemble the bolts with their washers in their
positions, but do not tighten them fully.
7.
Supply air to port A and check that the stroke of the
actuator matches the limits of the stroke of the valve.
Adjust as necessary and tighten the bolts fastening the
valve and the actuator.
