Emerson ANDERSON GREENWOOD 727 Installation And Maintenance Instructions Manual page 7

Dual pilot manifold
Hide thumbs Also See for ANDERSON GREENWOOD 727:
Table of Contents

Advertisement

ANDERSON GREENWOOD TYPE 727 DUAL PILOT MANIFOLD
INSTALLATION AND MAINTENANCE INSTRUCTIONS
Assembly – Main valve with drain plunger
in cap
1. Note: before assembly, clean all valve parts
thoroughly with oil-free solvent and dry,
paying particular attention to all sealing
surfaces. Do not bead or sand blast. Check
both damper and nozzle for matching orifice
'letter' designators before assembling.
2. Install extrusion ring (14) with radius edge
into flange corner, fit nozzle seal (15)
around bottom of nozzle (3) (see detail E
in Figure 2). Install nozzle in valve body and
secure nozzle lightly with new retaining
screws (9) and new Belleville washers (23)
(see detail G in Figure 2 for washer stack
orientation). Note that all valve sizes use six
washers per screw except the 4 x 6 valve
size which uses seven washers per screw.
Use a 12 point socket to tighten screws
in a clockwise pattern, one revolution
per screw, until all screws are fully
seated. This procedure will ensure proper
compression of new nozzle seal. Do not
tighten screws alternately as this method
could cause seal failure.
3. Stand valve on its outlet flange; install liner
(5) in valve body. Lubricate 45° step in liner
with silicone grease.
4. If a piston installation sleeve is used, (see
Section 13.7 for details) place sleeve on top
of liner. Lubricate ID of sleeve with silicone
grease. Wipe both piston and nozzle sealing
surfaces with a clean, lint free, cloth or rag
wetted with clean degreasing fluid. Insert
piston into sleeve to compress rings with
radial hole in piston toward valve inlet (refer
to Figure 2). Insert and center a wooden
or plastic dowel into piston and lightly tap
piston into liner approximately half way.
Remove installation sleeve and press
piston down to nozzle. Install spring (10),
damper (8) and liner seal (13).
If an installation sleeve is not used, lubricate
the ID of liner at both top and mid point with
silicone grease. Insert piston carefully with
the radial hole toward valve inlet (refer to
Figure 2). Insert and center a wooden or
plastic dowel into piston. Push in top ring
with screwdriver. Tap piston lightly into
liner. Press piston down to nozzle. Install
spring (10), damper (8) and liner seal (13).
5. For valves in steam service with standard
internal sense, apply Never-Seez to the
threads and the sealing edge of the port
plug (93A) and screw into the cap by hand
and tighten to 35-40 ft·lb torque using a
calibrated torque wrench. For valves with
remote sense or snubber options, install
remote sense/snubber fitting (93,B,C,D) by
lightly lubricating the cap bore, the insert's
extension barb end, sealing edge and
mounting thread. Screw the insert into the
cap port as far as possible by hand. Using
a wrench, screw the connector slowly into
the cap until it is fully seated. Finally, using
a calibrated torque wrench, tighten the
connector to 65-70 ft·lb torque to seat it
in the cap body.
6. Insert filter (19) into port in valve body and
slide a new dipper tube seal (20) over the
filter sleeve (see Figure 2, detail F).
Note: the manifolded valve requires an ⅛"
thick dipper tube seal Part no. 06.0553.002.
Do not use the
" thick dipper tube seal
1
/
16
Part no. 06.0553.001 in this assembly.
See section 12 for repair kit information.
7. Position mating hole in cap assembly over
the filter assembly sleeve and lower onto
studs, checking that damper is centered
into cap recess before cap seats against
valve body. A
" to ⅛" gap must be visible
/
1
16
between cap and body. This indicates cap is
in proper contact with the liner seal. Tighten
opposite cap nuts alternately to maintain
parallelism between cap and body until cap
is solid against body face. Torque nuts to
values in Table 1.
8. Reconnect tubing from unloader to outlet
flange. If tubing fittings have been removed,
coat fitting NPT threads with Never-Seez
before reinstalling. Refer to Section 13 for
thread seal information.
7

Advertisement

Table of Contents
loading

Table of Contents