Jordan Valve Mark 87 Series - Piloted Temperature Regulator - Manual (Page 4)

the top, nearest the diaphragm and the engraved
arrow on the disc always points to the wording “TOP
REVERSE” on the plate. Check that the index pins in
the valve body engage the plate to align the plate in
the body.
Place the diaphragm assembly on the stem with the
3.
diaphragm in its recess in the lower bonnet. Hold the
diaphragm assembly firmly against the stop in the
lower bonnet and push on the bottom of the stem
so that it fully enters the socket in the diaphragm
retainer. In this position, the disc should be in its
lowermost position with the orifices of the disc and
plate fully aligned. If the orifices are not fully aligned,
rotate the stem clockwise to move the disc up, or
counterclockwise to move the disc down.
When the orifices are aligned, remove the disc and
4.
plate and lock the locknut on the stem against the
disc pin. Replace the disc and plate and recheck the
orifice alignment.
The pilot valve, not shown here, is a Jordan Mark 80 TCV.
Torque Procedure For Cap & Spring
Housing Bolts
Install all bolts hand-tight. 1.
Torque the bolts in order of the bolt pattern to a val- 2.
ue equal to 1/4 of the recommended torque value.
Re-torque each bolt to the recommended value us-
3.
ing the same bolt pattern as shown.
1/2” – 2”
2-1/2” – 6”
Body/Cap: 200 in-lbs
Upper Bonnet: 240 in-lbs
Pilot Dome: 350 in-lbs
Body/Cap: 1080 in-lbs (90 ft-lbs)
Upper Bonnet: 240 in-lbs
Pilot Dome: 350 in-lbs
-4-
5 3
1
6 4
2
5
3
1
6 4
2
7
8
6 bolts
(or multiples)
8 bolts
(or multiples)