Cashco PGR-1 Manuel d'utilisateur télécharger pdf (Page 10)

IOM-PGR-1

10

9. Bench test unit for suitable operation.

NOTE: Regulators are not tight shutoff de-

vices. Even if pressure builds up beyond set

point, a reg u la tor may or may not develop

bubble tight shutoff. In general, tighter

shutoff can be expected with composition

seat.

10. Pressurize with air and spray liquid leak

de tec tor to test around body cap (66) and

body (61) for leak age. Test pres sure should

be a mini mum of 100 psig (6.9 Barg) at the

inlet.

11. Remove body from vise, rotate down side

up and secure body in vise with body cap

down.

12. Reassemble diaphragm subassembly by

plac ing pusher plate seal (73) over thread ed

post of pusher plate (64), placing diaphragm

(72) and pressure plate (63) over the

threaded post. Assure the pressure plate

(63) is placed with curved outer rim down

next to the diaphragm (72) surface. Place

a thread sealant compound on the threads

of push er plate post (64). Apply 15 in-lbs.

torque to tighten the nut.

13. Place spring (75) over the pusher plate

nut (70) of the diaphragm subassembly.

14. Place multipurpose, high temperature

grease into de pres sion of spring button (65)

where ad just ing screw (68) makes contact.

(Also lubricate the threads of the adjusting

screw lightly).

15. Set spring but ton (65) onto range spring

(75); en sure spring button is laying ﬂ at on

top of spring.

16. Rotate the spring chamber (62) CW by

hand into the threaded portion of the body

(61) ensuring not to cross thread. Continue

ro tat ing CW until ﬁ rmly seated against the

upper di a phragm. Tighten to 30-35 ft-lbs

(41-47 N-m) torque value.

17. Rotate adjusting screw (68) CW into the

spring chamber (62) to where the nut (71)

comes in contact with the top of the spring

chamber. Stabilizer set pressure should

approach the set point prior to removal from

the piping installation.Retighten nut (71).

18. Pressurize with air and spray liquid leak

de tec tor to test around body and spring

cham ber for leakage. En sure that an outlet

pressure is main tained during this leak test

of at least mid-range spring level; i.e. 20-80

psig (1.4-5.5 Barg) range spring, 50 psig

(3.4 Barg) test pres sure min i mum.

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