Operating & Service Manual 1 OPS-801 Rev.06
Section 1 Warnings
The VERSA-SLAB
TM
Gate Valve is a bi-direction non-rising stem manual operated valve incorporating a
floating gate and seats design. The gate is connected to the stem through a barrel lift nut in the gate. This
arrangement permits the gate to float freely and enhance a pressure assisted seal when acted on by the
differential pressure across the gate. Constant contacts behind the gate and seats are maintained by action of
wave springs located behind the seats and help to keep debris from accumulating into the valve cavity.
The bonnet is bolted to the valve body and pressure integrity is achieved by means of a metal ring gasket.
Pressure energized U-type stem packing are used to isolate pressure in the valve cavity. The stem has a
selective back seat feature to facilitate replacement of stem packing in the field when the valve cannot be
removed from service.
The gate is actuated by rotation of the stem-opening (counter-clockwise rotation) and closing (clock- wise
rotation). The bearing spacer is sandwiched by needle bearing assembly to provide a sturdy low operating
torque gate valve.
The bonnet is equipped with a ½” grease/injection fitting for lubrication of the valve cavity and the bonnet cap
has a standard grease zerk for lubrication of the stem bearing assembly.
ALL OPERATORS AND MAINTENANCE PERSONNEL SHOULD BE THOROUGHLY TRAINED IN THE
SAFE OPERATION, MAINTENANCE, AND INSPECTION OF THIS EQUIPMENT.
