SP970A, B, C AND D MANUAL AND MINIMUM POSITION PRESSURE REGULATORS
SP970A and C only
For panels having a thickness greater than 5/16 in.
(8 mm) but less than one in. (25 mm), use 315677A Bus
The SP970A and C can be panel, surface or wall
mounted. The SP970B and D are surface or wall
mounted. See Fig. 3 and 4.
Fig. 3. SP970A and C panel mounting.
SP970A AND C
Fig. 4. SP970 surface or wall mounting.
Panel Mounting SP970A and SP970C
1. Drill a 5/8 in. (16 mm) hole.
2. Lock the SP970 switch and scaleplate to the panel
with a hex nut on the back of the panel. Use a sec-
ond hex nut on the front panel. See Fig. 3.
CENTER PUNCH MARK IN "V" GROOVE
SHOWING 8 PSI (55 kPa) CALIBRATION -
PANEL-UP TO 5/16 IN.
5/8 IN. (16MM)
SP970B AND D
The scaleplate, knob and two mounting nuts
are furnished with SP970A and C.
Do not mount the knob during installation.
Refer to the Calibration section of this docu-
Use the mounting bracket as a template and secure
mounting bracket to surface. See Fig. 4. Screws are not
All connections are sharp barb 5/32 in. (4 mm) O.D.
Equipment Damage Hazard.
To prevent damage to the sharp barb
connections, do not attempt to cut or pull tubing.
To remove the tubing from the barb connections,
cut tubing a few inches from the control device.
Use a coupling to reconnect tubing.
NOTES: When the system is not copper or polyethylene
tubing, adapt as shown in Fig.5. Some models
provide parts for adapting.
Port Identification Table
The two right columns in Table 1 identifies the ports of
older Honeywell pneumatic relays when upgrading
Fig. 5. Adaptation piping.
5/32 IN. (4 MM) O.D.
5/32 IN. (4 MM)
5/32 IN. X 1/4 IN.
(4 MM X 6 MM)
1/4 IN. (6 MM)
TUBING CUT TO
1/4 IN. (4 MM) O.D.
1/4 IN. (6 MM) O.D.