ITT
Engineered Valves, LLC
Page 15 of 22
Technical Manual No. IOT1000P Effective 8/31/2018
REV LEVEL B
2.
Packing/End Flange Reassembly
Place Packing Spring (Item 5) in stuffing box. Lubricate each individual
packing component (Item 4) with KRYTOX
lubricant from DuPont.
Individually install the components into the End Flange. The assembly
order is male ring first, then chevrons, then female ring. Screw packing
nut (Item 3) into end flange (Item 2 or 39) and snug up by hand. Do not
tighten at this time. Take special precaution not to damage the packing
when sliding over the stem threads. Some means of protecting the packing
from damage during installation should be employed.
WARNING
Assure packing is installed in the correct orientation. See
Drawing 03-001 for proper orientation. Failure to do so
will cause the valve to leak severely from packing gland.
3.
Oil Valve Reassembly
Lubricate the Oil Seat Ring (Item 11) soft seal sealing surface located on
the inside diameter with Magnalube
-G from the Carleton-Stuart
Corporation. Clean the body oil seat threads and gasket area. Apply
Grafoil
GTS
sealant to both the Body (Item 1) and Oil Valve Seat Ring
threads (Item 11), place the Seat Ring Gasket (Item 21) on the Oil Valve
Seat Ring (Item 11) and thread into Body (Item 1). Torque to 130 Ft-Lbs
(176.3 Nm). Lubricate the oil stem plug with Magnalube
-G and the shaft
with antiseize lubricant. Carefully slide the oil stem (Item 12) into the End
Flange (Item 39), making sure not to damage the Packing (Item 4). Slide
the Body Gasket (Item 7) over the End Flange subassembly (Item 39).
Lubricate the 4 end flange Screws (Item 6) with antiseize compound and
fasten the End Flange assembly (Item 39) onto the Valve Body (Item 1),
ensuring the limit switch box Studs (Item 14) are properly oriented (In line
with piping). Torque the end flange Screws (Item 6) in two uniform
increments. Torque screws initially in a crisscross pattern to 40 Ft-Lbs
(54.2 Nm), repeat using 65-70 Ft-Lbs (88.1 - 94.9 Nm) and recheck. Push
the Oil Stem (Item 12) up into the Valve Body (Item 1) until it seats in the
Oil Valve Seat Ring (Item 11). This may require that the Oil Stem (Item
12) be lightly struck with a mallet until it is fully seated. Screw Spring
Seat (Item 17) onto the Valve Stem (Item 12). Hold the Limit Switch Box
(Item 13) in place, while adjusting the spring seat position to 2.05" (52.1
mm). This is measured from the inside surface of the Switch Box (Item
13) on which the spring rest to the spring seating surface on the Spring
