Model LF51
Single Pole Double Throw Switch
8
ES-A-ACV-LF981GD 2115
© 2021 Watts
LEAD FREE
*
10
11
12
14
6
7
9
13
15
8
5
4
3
2
1
Item
Description
1
Limit Switch
2
Bracket
3
Stem
4
Trip collar
5
Set Screw
6
Cap
7
Wiper Ring*
8
O-Ring*
9
Guide
10
O-Ring*
11
Polypak*
12
Locknut
13
Body
14
Pin
15
Coupling
*Included in Repair Kit
Parts List
Model 51
Single Limit Switch
The Model 51 Single Limit Switch provides visual indication of
valve position, as well as remote electrical indication of "valve
open" or "valve closed". The single pole double throw Micro-
Switch can be connected to open or close an electrical circuit
when the valve opens or closes.
The adjustable collar is normally set to contact the trip arm when
the main valve is closed. The collar can be positioned on the stem
by loosening the set-screw to actuate the switch at the desired
point of valve travel.
Single Pole Double Throw Switch
Common Lug
Normally Open
Normally Closed
Specifications
Body Material:
Stainless Steel
Elastomers:
Buna-N (standard)
EPDM (optional)
Viton™ (optional)
Enclosure:
NEMA 1, 3, 4 and 13 General Purpose (standard)
NEMA 1,7 and 9 Explosion Proof (optional)
Electrical:
Form C SPDT Switch
15 amp. 125, 250 or 480 VAC
½ amp. 125 VDC
¼ amp. 250 VDC
½" Conduit Connection
* The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
Viton™ is a trademark of The Chemours Company FC, LLC
