CONTROL MODULES (PILOTS) FOR ANY REGULATOR
When installed, these control modules (pilots) enable
the main regulator to perform different control
functions (see page 3, Regulator Variations). Pilots are
normally factory installed, but can be retrofitted or
interchanged in the field. The nonrising stem can be
adjusted by using a ¼" wrench. Catalog
numbers are for the screw-on pilot module.
Interchangeable with Danfoss PM Series,
size permitting.
INLET PRESSURE
Opens as inlet pressure rises. Range: A, 0
to 150 psig (0 to 10 bar), Part 75-1097;
or B, 30 to 300 psig (2 to 21 bar), Part M3 75-1098.
Also, Range V, 20" to 130 psig
(–0.67 to +9 bar), Part 75-1099. Catalog M3.
Compact welded pressure pilot. Range A,
0 to 150 psig (0 to 10 bar), Part 75-1126.
Standard only on valve sizes ¾" to 1¼".
Catalog M3W.
Opens as outlet pressure drops. For hot
gas bypass to suction or for controlled
supply pressure of defrost hot gas. Also
used for compressor suction pressure
limiting (crankcase pressure regulator).
¼" NPT connections for outlet pressure
gauge and sensing line (tubing not
included). Range B, 30 to 300 psig (2 to
21 bar), Part 75-1101; or Range V, 20" to
130 psig (–0.67 to +9 bar), Part 75-1100.
Catalog M3O, specify range.
DIFFERENTIAL PRESSURE
Maintains set- for differential between
inlet and outlet or other pressure source.
For pump relief or any differential control.
¼" NPT connection for pressure
sensing line (tubing not included). Range
A, 0 to 150 psi (0 to 10 bar) difference,
Part 75-1081, Catalog M3L.
M3L
PNEUMATICALLY
COMPENSATED
Air or other pressure in the bonnet raises
inlet pressure on a 1:1 ratio. ¼" NPT
connection. Range A, 0 to 150 psig (0
to 10 bar), Part 75-1081, Catalog M3P. M3P
Opens wide when pressure exceeds
pressure setting and repeatedly reseats
after operation. Defrost relief or high-
to-low system relief. Set and tagged. The
standard setting for ammonia defrost is
70 psig (4.8 bar). Range A, 0 to 150 psig
(0 to 10 bar), Part 75-1103; or Range B,
30 to 300 psig (+2 to 21 bar), Part Number
Compact welded pressure pilot. Range
A, 0 to 150 psig (0 to 10 bar), Part 75-1127.
Standard on valve sizes ¾" to 1¼".
Normally closed. Opens wide when
energized. Requires coil. See page 2
for coil selection. Less coil: Part
Mounted electronic actuator changes the
pressure set point in conjunction with a
controller and temperature sensor for
either air or liquid. Very precise. See page
12 for the control package which includes
the necessary controller and sensor.
Range: J1, 0 to 85 psig (0 to 6 bar), Part
27B1140; or J2, 25 to 115 psig (1.7 to 8 bar),
Part 27B1141. Catalog M3J.
Bulb opens the control module on
temperature rise to maintain a constant
temperature. Part 27B1110 with a range
of –40F to +30F (–40°C to 0°C) or Part
27B1111 with a range of +15F to +75F
(–10 to +25°C). Catalog M3T.
Enables a remote pressure source to be
introduced to the control via a pilot line
(replaces a pilot). ¼" NPT with separate
4" (100 mm) long weld nipple, Part
To be used in a control module port when
the port is not utilized. Stopping plugs
have square head and are marked with
“0” (75-1063). Straight through flow plugs
have a hex head and are marked with
“1” (75-1064). Catalog M3S (stopping)
or M3B (straight through).
To Next Page
Loading...
Need help?
General
