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To order the L971 Series Level Switch to fit your application, use the diagram below.
Example model number: 

L971-C

L971  – ____ 

How to Order

Dimensions

TOP

TOP

TOP

TOP

L971-D and L971-E

L971-F

L971-G

TOP

21

°

TOP

21

°

L971-A

Model

Case/Float

Configuration

(front view,

less cover

and gasket)

Case/Float

Configuration

(front view,

less cover

and gasket)

NOTE: 

Switches shown tripped on falling level.

Model

L971 and L971-B

L971-C

D

A

Float arm is 
adjustable but 
cannot be
removed. 

1/2 NPT

Float is removable
and replaceable

3 in.

(76 mm)

1/2 NPT

B

C

E

A

B

C

D

E

L971

2-5/8 (67)

5-7/8 (149)

30 (762)

2-1/2 (64)

2-27/32 (72)

L971-A

2-5/8 (67)

5-7/8 (149)

30 (762)

2-1/2 (64)

2-27/32 (72)

L971-B

4-13/16 (122)

8-1/16 (205)

30 (762)

4-5/8 (117)

2-27/32 (72)

L971-C

2-13/16 (71)

6-1/16 (154)

30 (762)

2-7/8 (73)

3-1/8 (79)

L971-D

3-7/8 (98)

7-1/8 (181)

30 (762)

3-3/4 (95)

2-27/32 (72)

L971-E

4-13/16 (122)

8-1/16 (205)

30 (762)

5-1/8 (130)

2-27/32 (72)

L971-F

2-5/8 (67)

5-7/8 (149)

40 (1016)

2-1/2 (64)

2-27/32 (72)

L971-G

2-5/8 (67)

5-7/8 (149)

40 (1016)

2-1/2 (64)

2-27/32 (72)

*Millimeter dimensions are shown in parenthesis ().

Dimensions in inches

*

(see drawing right)

Models

Case/Float Configuration 

(see chart below)

Blank

= Standard configuration

A

= Configuration A

B

= Configuration B

C

= Configuration C

D

= Configuration D

E

= Configuration E

F

= Configuration F

G

= Configuration G

L-7229B page 2 of 2

CONTROL SYSTEMS & SERVICES DIVISION

P.O. Box 1819; Rosenberg, Texas 77471; USA
+1 281 633 4500  

fax

+1 281 633 4588 

e-mail

[email protected]

MURPHY DE MEXICO, S.A. DE C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje 
San Luis Potosí, S.L.P.; México 78384 
+52 444 8206264  

fax

+52 444 8206336

Villahermosa 52 993 3162117

e-mail

[email protected]

www.murphymex.com.mx

FRANK W. MURPHY, LTD.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055  

fax

+44 1722 410088  

e-mail

[email protected]

www.fwmurphy.co.uk

MURPHY SWITCH OF CALIFORNIA

41343 12th Street West
Palmdale, California 93551-1442; USA
+1 661 272 4700  

fax

+1 661 947 7570

e-mail

[email protected]

www.murphyswitch.com

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

MACQUARRIE CORPORATION

1620 Hume Highway
Campbellfield, Vic 3061; Australia 
+61 3 9358 5555  

fax

+61 3 9358 5558

e-mail

[email protected] 

FW Murphy 

P.O. Box 470248
Tulsa, Oklahoma 74147 USA 
+1 918 317 4100 

fax

+1 918 317 4266  

e-mail 

[email protected]  

www.fwmurphy.com

R

E

G ISTERE

D

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

Printed in U.S.A.  0777070

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