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L91A,B,D PROPORTIONING PRESSURETROL
®
CONTROLLERS
60-2152—08 4
Fig. 1. Mounting dimensions of the L91 Proportional Pressuretrol
®
Controllers, in in. (mm).
M29781
L91A,B,D
ALL OTHER
MODELS
10 TO 300 PSI
0 TO 15 PSI
0 TO 16 OZ/IN
2
1/4-18 NPT
DIM A (SEE TABULATION TABLE)
DIM B (SEE
TABULATION
TABLE)
DIM C (SEE
TABULATION
TABLE)
1
2
2
3
4
1
2
3
4
4-1/2
(114.3) (COVER)
(110.3) (CASE)
(98.8)
3-57/64
3-13/32 (86.5)
(29.4)
(27.8)
(46.0)
(53.5)
(69.9)
(30.2)
1-1/16
1-3/16
(27.0)
(98.4)
(22.2)
4-11/32
(52.8)
(94.5)
(2)
EXTERNAL THREADS ON 0 TO 15 PSI MODELS; INTERNAL THREADS ON ALL OTHER MODELS.
SOME MODELS ARE ALSO AVAILABLE WITH 1/4-19 BSP-TR INTERNAL THREADS; SEE TABLE 1.
PROPORTIONING RANGE ADJUSTING SCREW ON L91B,D MODELS ONLY.
33312B KNURLED ADJUSTMENT SCREW KNOB, 7/8 IN. [22.2 MM] DIAMETER,. KNOB IS INCLUDED WITH 10 TO 300 PSI [0.07 TO .07 MPa] MODELS;
OPTIONAL ACCESSORY FOR OTHER MODELS.
FOR 10 TO 300 PSI [0.07 TO 2.07 MPa] MODELS. DIM C INCLUDES THE KNURLED ADJUSTMENT KNOB.
TABULATION OF DIMENSIONS A, B, AND C
OPERATING RANGE DIM A DIM B
DIM C
CUSTOMARY UNITS METRIC UNITS IN. MM IN. MM IN. MM
0 TO 15 PSI
5 TO 150 PSI
10 TO 300 PSI
0 TO 103 kPa
0.03 TO 1.03 MPa
0.07 to 2.07 MPa
2-7/16
1-5/8
1-1/4
61.9
41.3
31.8
1-7/32
13/16
5/8
31.0
20.6
15.9
6-7/8
5-3/4
6-1/16
174.6
146.1
154.0
1-5/32
1-3/32
1-13/16
2-1/8
3-7/8
2-3/4
7/8
2-5/64
3-23/32
13/16
(20.1)
1-1/16
(27.0)
44