Archon WD2010H 설치, 운영 및 유지보수 지침 매뉴얼 - 페이지 12

{카테고리_이름} Archon WD2010H에 대한 설치, 운영 및 유지보수 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Archon WD2010H 16 페이지. Washdown stations

INSTALLATION/OPERATION/MAINTENANCE INSTRUCTIONS FOR

ARCHON MODELS WD2010L, WD2010, WD2010H WASHDOWN STATIONS

4.2

Steam Section

Holding the steam valve body (11) upside down (note nameplate orientation), insert the threaded end of

the stem assembly (17) into the threaded end of the body until the stem bottoms out on the seat. Assemble

washers (125A) & wavewashers (125) with 2 wavewashers (125) followed by 1 washer (125A) to make a

stack of totally 8 wavewashers and 3 washers. Assemble the stem packing (25), O-ring (39D) and stem

packing gland (19) over the stem. See Figure 4.

Care should be taken when assembling the stem packing over the stem threads so as to not damage the

packing. Turn packing gland (19) clockwise so the underside of the hex contacts the valve body (11)

bonnet.

Note:

Discard and replace any packing that does not freely slide down into the valve packing

chamber. This is caused by flat spots on the outside of the packing.

Assemble nut (4C) onto stem. Thread nut all the way down on the stem.

Assemble O-ring (39E) in groove of connector (103).

Place valve body in a vise with valve seat facing down. Thread connector (103) onto end of stem assembly

(17) by turning in a clockwise direction.

Install upper diaphragm casing (45) over the connector (103) and onto the valve body (11). Secure the

upper diaphragm casing to the valve body using the 2 cap screws (100D).

Assemble the spring (140D), piston (217), diaphragm (182), and retainer (116A) to the bottom end of the

connector using cap screw (100D). Ensure that the piston is installed so that the flared edge of the piston

faces towards the valve stem. Ensure that the piston is secured flush to the connector and that the stem is

fully seated in the body (valve closed).

Thread the assembly of the connector, piston, diaphragm, and retainer on the stem until the flared edge of

the piston bottoms on the inside of the upper diaphragm casing.

With the valve stem fully against the seat, and the piston flared edge bottomed against the inside of the

casing, turn the connector in counter-clockwise direction five-5 complete revolutions. Tighten nut on stem

against the connector to hold in place. (This sets the stroke of the valve from full closed to full open

Align holes in lower diaphragm casing, with holes in diaphragm.

Assemble upper diaphragm casing to the lower diaphragm casing using the eight-8 cap screws (100C). Re-

align upper and lower diaphragm casings at the previously scribed line. Cap screws should be torqued to 3-4

ft-lb.

Figure 4

Installation: 1004 Rev 4

Issued: February 7, 2013