2.25

(57.15)

6.01

(152.8)

0.87

(22.23)

0.25" MNPT

1.62

(41.28)

Adjustment

screws

0.62

(15.88)

0.5" Conduit 

hole

8.25

(209.55)

7

(177.80)

6.01

(152.78)

0.25

(6.35)

4

(101.6)

1.18

(30.16)

0.53

(13.49)

1.42

(36.12)

0.75 (19.05)

Clearance for 

cover removal

0.125 Female NPT 

negative process 

connection

(3)0.20 (5.16)
Mounting holes
equally spaced on a
6.5 (165.10) B.C.

Adjustment

screw

0.5" Male NPT X 

0.125" female NPT

positive process 

connection

0.87 

(22.23) 

Conduit 

connection

45°

30°

Bulletin 8757

page 9

Factory Sealed

Lead Wires

72" Lg.

0.5

Male Conduit

Connection

0.5"

NPT 

Process 

Connection

3.5

(88.9)

5.5

(139.8)

1.25

(31.8)

Factory Sealed

Lead Wires

72" Lg.

0.5

Male 

Conduit

Connection

0.5"

NPT 

Process 

Connection

1.25
(32)

5

(127)

8757-12-20I
8757-12-50I

8757-12-200I

8757-12-15P

8757-12-50P

8757-12-100P

8757-PG

8757-DS

Dimension inches (mm) | Pressure Switches