cashco 1164 Manuel d'installation, d'utilisation et d'entretien - Page 4
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bolting (13 & 14) in a cross pattern that allows
spring chamber (2) to be pulled down evenly.
Rec om mend ed torques are as follows:
Regulator Size
(DN20,25)
3/4" - 1"
1-1/2" (DN40)
2" (DN50)
NOTE: Never replace bolting (13 & 14) with
just any bolting if lost. Bolt heads and nuts
are marked with specification identification
num bers. Use only proper grades as
re place ments.
13.
Reinstall adjusting screw (17) with locknut (8).
14.
Soap solution test around bolting (13 & 14)
and body (1) and spring chamber (2) flanges
for leakage. Ensure that an inlet pressure is
maintained during this leak test of at least
mid-range level; i.e. 30-80 psig (2.07-5.52
Barg) range spring, 60 psig (4.14 Barg) test
pres sure min i mum.
C. Trim Replacement (For Metal Seated Units):
1. Trim removal requires that the diaphragm be
re moved. Refer to previous procedure Sec tion
VI., Sub-section B, Steps 1 through 8.
2. Remove valve guide (12), valve plug (16) and
spring (7).
3. Inspect seating surface of integral seat ring
(15). If seat ring shows erosion or wear, the
regulator should be replaced.
4. Inspect guide (12), plug (16), O-ring (11) and
spring (7). Inspect parts for ex ces sive wear.
Replace if worn, nicked or de pressed.
4
Metal Dia-
Bolt Size
phragm
3/8" - 24
30 ft/lbs.
7/16" - 20
45 ft/lbs.
1/2" - 20
70 ft/lbs.
5. Clean the body (1) cavity. Clean all parts to
be reused. NOTE: On regulators originally
sup plied with Option 1164-55, "special
cleaned", main te nance must include a level of
clean li ness equal to Cashco's cleaning standard
#S-1134. Contact factory for details.
6. Reinstall the spring (7). Then place the O-ring
(11) on the plug (16) and the plug (16) into
the valve guide (12).
7. Now place the valve guide (12) (along with
the O-ring (11) and plug (16)) on to the spring
(7).
8. Reinstall diaphragm (9) per Section VI., Sub-
section B., Steps 9 through 14.
9. Bench test unit for suitable operation. NOTE:
Regulators are not tight shutoff devices. Even
if pressure falls below setpoint, a regulator
may or may not develop bubble tight shutoff.
In general, tighter shutoff can be expected
with composition seat.
10. Soap solution test around body (1) flange
for leakage. Test pressure should be the
max i mum allowed.
D. Trim Replacement (For TFE Seated Units):
1. Follow same steps as listed under "Trim
Re place ment - Metal Seated Units" except
for the following guidelines:
2. When inspecting parts for excessive wear
(VI.C.4), ensure there are no foreign particles
em bed ded or nicks in the TFE seat which is
an integral part of the plug assembly. Replace
plug assembly (16) if any of these conditions
are noted.
IOM-1164