Jordan Valve Mark 60 Series - Sliding Gate Pressure Regulator - Manual (Page 3)

-3-
er diaphragm plate (12) in the vise. Use a wrench
on the hex of the upper diaphragm plate (11) and
turn counterclockwise to remove.
6. Remove the diaphragm and replace in reverse
order. Tighten. For elastomer diaphragms, clean
(degrease) threads and apply one drop of Loctite
#290. Thread the parts together and tighten 1/8 -
1/4 turn.
7. Continue on to the procedures outlined under
STROKE ADJUSTMENT.
Disc Pin Replacement
1. Remove the disc and the plate, following the pro-
cedure outlined under SEAT REMOVAL.
2. Remove the diaphragm as outlined under DIA-
PHRAGM REPLACEMENT.
3. Holding the disc pin assembly with an open-end
wrench, loosen the stem locknut (16). The stem
(15) can now be unscrewed from the disc pin (17)
and removed.
4. Remove the disc pin (17) and locknut (16).
5. Check the condition and clean all parts. Clean the
stem bushing. Replace any defective parts.
6. Reassemble in reverse order and follow the proce-
dures outlined under STROKE ADJUSTMENT.
Stroke Adjustment
1. Do not tighten locknut (16) on the stem (15); run it
to the upper end of the thread with the disc pin (17)
located at about the center of the threaded sec-
tion. The valve stroke adjustment is determined by
how far the diaphragm assembly is threaded onto
the stem. Holding the stem (15) lightly with pliers,
thread the diaphragm assembly approximately 4
turns onto the valve stem (15) and center the disc
pin (17) in the valve body. Tighten locknut (16).
2. Place the plate and disc in the valve body so that
the disc pin (17) protrudes through the center slot
in the plate (23) and engages the disc (25). Use
new gaskets (21,22). Follow the same precautions
outlined under SEAT REMOVAL. Align the plate (23)
and disc (25) so that their markings (either TOP or
TOP REVERSE) are toward the diaphragm.
3. Push the diaphragm assembly down against the
valve body and check the orifice alignment of the
disc (25) and plate (23). The orifices should be fully
open and in perfect alignment.
4. If the orifices are not in perfect alignment, rotate
the diaphragm assembly counterclockwise to lower
the valve disc (25), and clockwise to raise the valve
disc (25).
5. The total stroke of the Series 60 PRV is equal to the
orifice width plus 1/16” overlap. Consequently, per-
fect alignment is required for proper operation.
6. After proper adjustment has been obtained, place
the spring (6) on the upper diaphragm plate (11)
and the spring seat (5) on the spring.
7. Before replacing the spring housing, be sure that
if the diaphragm is metal that it is centered in the
body recess. If the diaphragm is elastomer and the
seats are aligned, but the diaphragm and body bolt
holes are not aligned, turn the diaphragm assembly
counterclockwise to align the holes.
8. Make sure that the spring housing is centered on
the body and hand tighten the spring housing bolts
and nuts, then proceed with the TORQUE PROCE-
DURES.
Torque Procedure for Cap &
Spring Housing Bolts
1. Install all bolts hand-tight.
2. Torque the bolts in order of the bolt pattern to
a value equal to ¼ of the recommended torque
value.
3. Re-torque each bolt to the recommended value
using the same bolt pattern as shown.
Recommended Bolt Torque
Body to Cap 90 ft./lbs.
Spring Housing 85 ft./lbs.
Ordering Spare Parts
Use only genuine Jordan Valve parts to keep your valve
in good working order. So that we can supply the parts
which were designed for your valve, we must know ex-
actly which product you are using. The only guarantee
to getting the correct replacement parts is to provide
your Jordan Valve Representative with the valve serial
number. This number is located on the valve identifica-
tion tag. If the serial number is not available, the parts
needed for your valve might be able to be determined
with the following information: Model Number, Valve
Body Size, Seat Material and Cv rating, Spring Range and
Set Point, Trim Material, Part Name - Number and Quan-
tity (see parts list chart).
NOTE: Without a valve serial number, any parts or-
dered incorrectly are subject to up to a minimum
25% restock charge when returned.
5 3
1
6 4
2
5
3
1
6 4
2
7
8
6 bolts
(or multiples)
8 bolts
(or multiples)