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Model LF51

Single Pole Double Throw Switch

 

8

 

ES-A-ACV-LF984GD  2115 

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LEAD FREE

*

10

11

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14

6

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9

13

15

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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

ACV Standard Components - Series LF984GD

Summary of Contents for AMES LF984GD Series

Page 1: ...tor in accordance 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...

Page 2: ...ening speed control which restricts the speed of fluid and pressure evacuating the main valve cover chamber The valve remains open during the pumping cycle Rate of Flow Feature During the pumping cycl...

Page 3: ...is Ames Automatic Control Valve ACV is a full port single chamber basic valve that incorporates a one piece disc and dia phragm assembly This assembly is the only moving part within the valve allowing...

Page 4: ...530 1945 Pressure 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 4 8 1 0 1 2 1 4 1 6 6 2 1 1 2 3 8 1 0...

Page 5: ...l 9 Stem Washer ASTM A276 304 Stainless Steel 10 Diaphragm Washer ASTM A536 65 45 12 Epoxy Coated Ductile Iron 11 Diaphragm Buna N Nitrile 12 Disc Retainer ASTM A536 65 45 12 Epoxy Coated Ductile Iron...

Page 6: ...e NPT Port Size NPT Shipping Weights A B C D E F G H I J K L in in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in in lbs kgs 11 4 71 4 184 51 2 140 3 8 1 4 20 9 11 2 71 4 184 81 2 216 51...

Page 7: ...he Main Valve open and closed When the cover of the Accelerator Pilot is de pressurized the main valve cover chamber is connected to upstream pressure causing the valve to close drip tight When the co...

Page 8: ...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 9: ...stomers Nitrile standard EPDM optional Viton optional Voltage 24VDC 24VAC or 120VAC Enclosure General Purpose NEMA 4 standard Explosion Proof NEMA 6 6P 7 9 optional Action Normally Open or Normally Cl...

Page 10: ...lve 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 Stee...

Page 11: ...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 12: ...ure signal is sensed below the diaphragm An increase in flow rate causes the differential pressure across the orifice plate to increase The Pilot modulates toward a closed position when the differenti...

Page 13: ...3 Cap Screw 4 Power Chamber 5 O Ring 6 Body 7 Seat 8 Adjusting Screw 9 Pin 10 Adapter 11 O Ring Included in Repair Kit Item Description 12 Spring Guide 13 Nut 14 Belleville Washer 15 Diaphragm Washer...

Page 14: ...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 15: ...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 packing Size Dim...

Page 16: ...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 17: ...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 18: ...roper re assembly 6 Connect solenoid wiring leads to desired switching device using safe standard electrical practices 7 Wire the limit switch contacts to the proper relay connections using safe stand...

Page 19: ...art to open the main valve checking that the main valve opens Air is vented through the loosened fitting Tighten the fitting when liquid begins to vent Clockwise for MANUAL Operation Figure 1 3 Way So...

Page 20: ...g Speed Needle Valve Adjustment The closing speed needle valve regulates fluid pressure into the main valve cover chamber controlling the valve closing speed If valve closing is too slow turn the adju...

Page 21: ...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 22: ...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 23: ...require a lifting eye bolt to be installed in the valve stem accessory threads located on the very top of the valve stem 5 Before removing Stem Nut examine stem threads for mineral build up Remove dep...

Page 24: ...to ensure even distribution Test the Disc and Diaphragm Assembly for smooth travel by following the Freedom of Movement Test procedure in previous section 11 Test the integrity of the Seat Seal by fol...

Page 25: ...s 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 ove...

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