Emerson Fisher A11 Instruction Manual page 8

A11 Valve
August 2017
CAUTION
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve
materials with process media rests solely with the purchaser and end‐user.
Because some valve/body trim material combinations are limited in their pressure drop and temperature ranges, do not
apply any other conditions to the valve without first contacting your
Figure 3. Proper Installation Procedure
B2263/IL
For Lugged Valves:
1. Position the valve between the flanges. Be sure to leave enough room for the flange gaskets; then install the lower
flange bolts.
2. Install the gaskets and align the valve and the gaskets.
3. Install the remaining bolts.
4. Tighten the flange bolts in an alternating criss‐cross fashion to a torque value of one‐fourth of the final bolting
torque. Repeat this procedure several times increasing the torque value each time by a fourth of the final desired
torque. When the final torque value has been applied, tighten each flange bolt again to allow for gasket
compression.
8
Emerson sales office
VALVE IN CLOSED POSITION
DURING INSTALLATION (OR
REMOVAL)
DAMANGE TO DISK SEALING
AREA. SHAFT HORIZONTAL:
FLANGE GASKETS:
BE SURE THESE ARE CENTERED
ALONG WITH THE VALVE
Instruction Manual
D104223X012
or Local Business Partner.
TO PREVENT
PIPE FLANGES:
OPENED ENOUGH TO ALLOW
THE VALVE AND GASKETS TO
SLIP INTO PLACE
BOTTOM FLANGE BOLTS:
FORMING A CRADLE FOR
VAVLE DURING INSTALLATION
FLANGE BOLTS TIGHTENED
EVENLY TO PREVENT GASKET
LEAKAGE