3. Allow pressure to bleed off through the downstream
piping. Do not attempt to reverse the flow through the
valve by bleeding pressure from the upstream side of
the valve
4. When the pressure gauges indicate that all pressure
has been removed from the system, close the outlet
shutoff valve. The valve may be removed from the line
and serviced.
Note: refer to the drawing at the end of this document
for description and proper orientation of parts.
Clean-In-Place/Steam-In-Place
To manually open the valve for cleaning, back off the ad-
justing screw to remove all range spring load. Maintain the
position of the thumb-lock and hex jam nut on the stem so
that the adjusting screw can be returned to its normal posi-
tion to maintain the set point. There is a CIP spring inside
the spring housing that will open the valve automatically
once the range spring load is removed. This will allow the
valve to drain completely during the cleaning cycle .After
cleaning return the adjusting screw back to the original set
point by using the thumb-lock and an indicator.
NOTE: 2” Valves do not use a thumb-lock, but instead
use two jam nuts.
Disassembling Valve
1. Follow the instructions under the “Maintenance” section
to remove the valve from line.
2. Back off the adjusting screw to remove the load from
the range spring.
3. Remove the spring housing by removing the hex head
cap screws.
4. Remove the spring and spring guide.
5. Remove the cylinder by removing the hex jam nut along
with lockwasher on valves with a Stainless Steel dia-
phragm. This will allow you to remove the CIP/SIP
spring and adapter.
6. Remove the spacer, upper diaphragm plate and dia-
phragm from the stem. Remove the lower diaphragm
plate and o-ring where applicable.
CAUTION: If the valve is equipped with a metal diaphragm,
the edges are very sharp. Exercise caution to avoid lacera-
tions.
7. Remove the stem and the o-ring [on ¾” and 1” valves
with a metal diaphragm only] from the body.
Preparing Valve For Assembly
1. All parts should be cleaned and examined. Damaged
parts should be replaced.
2. O-rings should be lubricated. You may use any lubri-
cant that is compatible with both your process and the
o-ring material. EPDM o-rings must not be exposed to
mineral oil as it will cause them to swell and make
them difficult to install.
NOTE: for all assembly lubrication requirements, Jor-
dan Valve/Steriflow uses Bostik NEVER_SEEZ, White
Food Grade with PTFE, Cat. No. NSWT-14
(improved
version without mineral oils).
3. For soft-seated valves: clean threads on the stem and
on retainer with Loctite primer “T”. Allow to dry. Install
new soft seat onto retainer [or onto stem when appli-
cable on low flow versions]. Apply Loctite No. 620 to
threads and thread the retainer onto the stem. Tighten
until the screw threads run out. Allow to cure.
Assembling the Valve
1. Lubricate o-ring and install into the groove in the body
[not required on valves with elastomer diaphragm].
2. Lubricate o-ring and install into the groove in the lower
diaphragm plate. Install lower diaphragm plate onto stem
[not required on valves with elastomer diaphragm].
3. Install O-Ring to steam.
4. Install diaphragm onto stem.
5. Install upper diaphragm plate onto stem.
6. Install spacer onto stem.
7. Install stem into body. Center diaphragm onto body.
8. Install adapter onto body. The adapter should engage
the pilot diameter on the body.
9. Install the CIP/SIP spring onto the spacer.
10. Install the cylinder onto the stem.
11. Install lockwasher onto stem [not required on valves
with elastomer diaphragm].
12. Install hex jam nut onto stem and tighten. If valve has
an elastomer diaphragm, tighten only ¼ turn and apply
Loctite No. 290 to the threads to lock joint.
13. Install spring into the cylinder.
14. Install spring guide onto the spring.
15. Lubricate the O.D. surfaces of the cylinder and install
the spring housing.
16. Attach the nameplate to the body with one of the hex
head cap screws.
17. Install hex jam nut and thumb-lock (or second hex jam
nut) onto the adjusting screw and lubricate the thread
on the adjusting screw. Thread adjusting screw into the
spring housing only about four threads.
18. Secure spring housing to the body. Hand-tighten two of
the hex head cap screws. Place a light spring load on
the stem by turning the adjusting screw clockwise. This
will center the plug on its seat. Torque hex head cap
screws to 200 in/lbs. (17 ft/lbs.).
