Operating & Service Manual 5 OPS-814 Rev.00
Insert Lift
Nut to Gate
Gate
Diagram 3 (a)
Diagram 3 (b)
Install Gate to
Bonnet Assembly
3.3 Installing Bonnet/Gate Assembly to Valve Body
a) Carefully lift bonnet/gate assembly over the valve body and stab the gate in the space between the seats
per Diagram 4 (a) & (b). A seat spreader aid may sometimes be necessary to spread the seats to make
it easier for installing the gate. Once the gate has started between the seats it would easily slide all the
way down until the bonnet comes into fully contact with the valve body.
Bonnet/Gate
Assembly
Bonnet/Gate
Assembly
Seal Spreader
Aid
Diagram 4 (a)
Diagram 4 (b)
b) Orient the bonnet to locate the injection fitting at 90º to the direction of flow for easy access during field
lubrication per Diagram 4 (c).
c) Make up four nuts in alternate position around the bonnet and operate the valve close and open to verify
it is working smoothly. Make up the rest of the nuts and tighten in a crisscross manner to specified make
up torque.