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Model LF51-1

 

14

 

ES-A-ACV-LF980GD-16  2115 

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*

Specifications

Model 51-1

Dual Limit Switch

Size: 2" - 8" NPT

The Model 51-1 Dual Limit Switch provides visual indication of 

valve position, as well as remote electrical indication of "valve 

open" and "valve closed". The single pole double throw Micro-

Switches can be connected to open or close an electrical circuit 

when the valve opens or closes.
The adjustable collars are normally set to contact the trip arms to 

indicate "valve open" and "valve closed". The collars can be posi-

tioned on the stem by loosening the set-screws to actuate the 

switches at the desired point of valve travel.

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.

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

10

11

12

14

6

7

9

13

15

8

5

4

3

2

1

Viton™ is a trademark of The Chemours Company FC, LLC

ACV Options and Accessories - Series LF980GD-16 

Parts List

Single Pole Double Throw Switch

Single Pole Double Throw Switch

Common Lug

Normally Open 

Normally Closed 

Summary of Contents for AMES LF980GD-16 Series

Page 1: ...with local codes and ordinances WARNING Need for Periodic Inspection Maintenance This product must be tested periodically in compliance with local codes but at least once per year or more as service...

Page 2: ...mp is signaled to start the 4 Way Solenoid is energized and directs fluid and pressure into the power chamber below the diaphragm and relieves fluid and pressure from the cover chamber above the diaph...

Page 3: ...his assembly is the only moving part within the valve allowing it to open or close as commanded by the pilot control system The lower por tion of this two piece assembly is a mechanical check feature...

Page 4: ...ure Drop psi 2 3 4 6 8 10 20 30 40 60 80 100 Flow Rate Gallons per minute Water 2 4 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000 100000 8 6 1 4 1 6 1 2 1 0 8 6 4 3 2 1 2 2 1 2 1 0 8 6 4 3 2 1...

Page 5: ...3 and Smaller ASTM A276 302 Stainless Steel 13A Bearing Retaining Ring 4 and Larger ASTM A276 302 Stainless Steel 14 Inner Bearing ASTM A276 304 Stainless Steel 15 O ring Buna N Nitrile 16 O ring Buna...

Page 6: ...e 300 Angle Thread Angle 150 Angle 300 Port Size NPT Port Size NPT Port Size NPT Shipping Weights A B C D E F G H I J K L M in in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in in in lbs...

Page 7: ...EPDM optional Viton optional Voltage 24VDC 24VAC or 120VAC Enclosure General Purpose NEMA 4 standard Explosion Proof NEMA 6 6P 7 9 optional Action 4 Way Actuation Solenoid Action only Main valve actio...

Page 8: ...ve cover This causes the main valve to close until inlet pressure is again greater than outlet Standard Material Brass Housing and Body Stainless Steel Indicating Rod Optional Material Stainless Steel...

Page 9: ...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...

Page 10: ...on In the free flow direction the seat moves out of the flow path to all unrestricted flow Specifications Standard Flow Control Large Flow Control FLOW FLOW CLOSED Fluid Speed Controlled by Needle FLO...

Page 11: ...ilot circuit speed controls and pilots The filter element can be accessed for cleaning by removing the clean out cap or may be cleaned by installing an optional blow down ball valve The wetted surface...

Page 12: ...re used in pilot lines to provide a positive shutoff in any override or maintenance situation for simple trouble shooting This 2 piece full port valve features bottom loaded stems PTFE seats and packi...

Page 13: ...r Size 1 4 3 4 NPT Model LF60 Flo Clean Strainers are used to filter the fluid pass ing through the pilot circuit and provide protection to pilot circuit speed controls and pilots It is installed in t...

Page 14: ...vel 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...

Page 15: ...ld be kept clean and replaced exactly as removed Consult appropriate hydraulic schematic to ensure proper re assembly 6 Connect solenoid wiring leads to desired switching device using safe standard el...

Page 16: ...not flow until pump starts Pre set pilots as noted Opening and Closing Speed Prior to pump start actuate manual operator on solenoid to enable diaphragm assembly to stroke open and closed Observing t...

Page 17: ...ure 2B increasing the rate of closing Figure 2 Flow Control Counterclockwise to INCREASE the rate of opening Clockwise to DECREASE rate of opening 2A 2B STEP 8 At valve closure booster pump will stop...

Page 18: ...valve specification sheets for approximate cover capacity A continuous flow of water from the open port indicates a damaged diaphragm or loose disc diaphragm assembly Disassemble valve and replace di...

Page 19: ...ation valves ensure open Diaphragm is damaged Conduct diaphragm seal test repair and replace if necessary Main valve stem assembly corroded damaged Inspect stem assembly clean replace if necessary Blo...

Page 20: ...examine stem threads for mineral build up Remove deposits with a fine wire brush Extreme care should be taken not to damage the finish on stem guiding surfaces when disassembling Avoid applying pipe...

Page 21: ...oes not work properly other costs resulting from labor charges delays vandalism negligence fouling caused by foreign material damage from adverse water conditions chemical or any other circumstances o...

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