HomeMy WebLinkAboutB16-1187 000-000-000Chapter 2 — Components
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REV. 2
SS STEEL PRESSURE SWITCHES
ACTUATION HOSE
The Stainless Steel Actuation,Hose is used to connect the actu- Model PS-SPDT-XP.
-ation line compression fees and can also be connected end to
end. The hose has the same thread, 7/16-20, as the fittings. The Model PS-SPDT-XP is an explosion proof (NEMA 4; 7;
See Figure 2-22. 9) electrical pressure switch which can be field mounted in
the discharge piping as shown in Figure 2-23. The switch is
Hose Part No. Length UL Listed (CCN: NOWT) and mu�t be installed in accor-
417582 8 in. (20 cm) dance with the instructions contained with the switch and
31809 16 in. (41 cm) this manual The switch provides one set of NO/NC dry con -
32336 24 in. (61 cm) tacts. It is intended for use with electric power shut-off
430815 42 in. (107 cm) devices (dealer supplied), electric gas valves, alarms, bells,
Fitting lights, contactors-, and other electrical devices designed to
Part No. Description shut off or turn on upon system actuation. It is rated for 15
31810 Male Elbow (7/16-20 x 1/4 in. NPT) amps @ 12 5/250 1 VAC.
31811 Male Tee (7/16-20 x 7/16-20 x 1/4 in. NPT)
32338 Male Straight Connector (7/16-20 x 1/4 in. NPT)
7/16-20 7/16-20
Figure 2-22. Stainless Steel Actuation Hose.
000433
12 IN. (30.5 cm)
PIPE & FITTINGS MAXIMUM 12 TO 15 IN.
(30.5 to 38.1 cm)
Pipe and fittings must be furnished by the installer.
Schedule 40 black, galvanized, chrome plated, or stainless
steel pipe must be used. Standard weight malleable, galva-
nized, chrome plated, or stainless steel fittings must also be
used.
Figure 2-23. Pressure Switch Piping.
003025PC
PRESSURE BLEED DOWN
ADAPTOR ASSEMBLY
The Pressure Bleed Down Adapt -or Assemb] . y, Part No. 551736,
is required to open the valve stem 6n the tank when bleeding
the tank down for six-year maintenance. See Figure 2-24.
Figure 2-24. Pressure Bleed Down Adaptor Assembly.
ULEX 3437 CEx732
March 17, 2004