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Model LF51

Single Pole Double Throw Switch

ES-ACV-LFM513-5 2115

LEAD FREE

Item

Description

Limit Switch

Bracket

Stem

Trip collar

Set Screw

Cap

Wiper Ring*

O-Ring*

Guide

O-Ring*

Polypak*

Locknut

Body

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 LFM513-5

Содержание LFM513-5 Series

Страница 1: ...ractor 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 more as service conditions warrant All products must be retested once maintenance has been performed Corrosive water conditions and or unauthorized adjustments or repair could render the product i...

Страница 2: ... 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 diaphragm The fluid and pres sure relieved from the cover chamber is vented to atmosphere or available floor drain The valve opens at an adjustable rate gradu ally admitting pumping pressure into the distrib...

Страница 3: ...This 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 which acts independent of diaphragm position or pilot control system and provides immediate check action when flow ceases When pressure is applied to the upper diaphragm chamber and released from the...

Страница 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 2 2 Angle Globe C V Suggested Maximum continuous flow based on velocity of 20 ft per second Maximum intermittent flow based on velocity of 25 ft per second Minimum flow rates based on a 20 40 psi pre...

Страница 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 N Nitrile 17 Upper Stem ASTM A276 304 Stainless Steel 18 Lower Stem ASTM A276 304 Stainless Steel 19 Spring ASTM A276 302 Stainless Steel 20 Disc Retainer ASTM A536 65 45 12 Epoxy Coated Ductile Iron...

Страница 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 kgs 6 20 508 21 533 187 16 468 10 254 101 2 267 6 152 61 2 165 3 4 3 4 3 4 340 154 8 253 8 645 263 8 670 213 4 554 123 4 324 131 4 337 8 203 81 2 216 1 1 1 665 302 10 293 4 756 311 8 791 233 8 594 147...

Страница 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 action energize to open or energize to close is dependent on the particulars of the pilot system Brass solenoids are not lead free and it is illegal to use them in potable services in the United States suc...

Страница 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 Housing and Body Disc Viton 1 4 PTFE 1 Pressure Rating 400psi 27 6 bar Body Spring Spring Retainer Stem Adaptor Disc Disc Holder Specifications The wetted surface of this product contacted by consuma...

Страница 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 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 optio...

Страница 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 FLOW External Threads Internal Threads FLOW OPEN Free Flow Seat Full Open Size Standard Flow MNPT x 3 8 FNPT High Flow 1 2 MxF NPT Body Material Lead Free Brass Stainless Steel optional Seat Lead Free Br...

Страница 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 of this product contacted by consumable water contains less than 0 25 of lead by weight Body Material Lead Free Copper Silicon Alloy CF8M 316 Stainless Steel optional Retainer Cap Lead Free Copper Si...

Страница 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 packing Size Dimensions Weight C H L in in mm in mm in mm lbs kg 1 4 113 16 46 37 16 87 13 4 45 0 4 0 2 3 8 113 16 46 37 16 87 13 4 45 0 4 0 2 1 2 113 16 46 37 16 87 115 16 50 0 4 0 2 3 4 21 4 57 4 101 25 ...

Страница 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 the inlet body port of the Main Valve exposing the strainer element to main line flow The currents and flow across the screen create a self scouring effect cleaning the filter element The wetted surfac...

Страница 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 SPDT Switch 15 amp 125 250 or 480 VAC amp 125 VDC amp 250 VDC Conduit Connection The wetted surface of this product contacted by consumable water contains less than 0 25 of lead by weight Item Descri...

Страница 15: ...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 electrical practices 7 Wire the limit switch contacts to the proper relay connections using safe standard electrical practices Adjust the limit switch collar to the approximate make break contact position 8 After installati...

Страница 16: ...ot 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 the limit switch stem indicator monitor rate of opening and closing speed Adjust accordingly per applica tion requirements NOTE Cycle diaphragm multiple times to confirm rate of movement and remove exces...

Страница 17: ... 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 Adjust limit switch collar to final position to ensure positive actuation of limit switch elec trical contact if necessary by sliding up down to location See Figure 3 Figure 3 Limit Switch in Closed Position 17 ES ACV LFM...

Страница 18: ...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 diaphragm or tighten disc diaphragm assembly Test 2 Seat Seal Test 1 Close downstream isolation valve and install pressure gauges on an open inlet and outlet port of main valve 2 Open upstream isolation valve to allow press...

Страница 19: ...pen 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 Blockage in main valve Perform freedom of movement test if valve does not close disassemble and remove blockage Worn damaged valve seat Perform seat sealing check disassemble and inspect re pair seat if required Improperly c...

Страница 20: ...hreads 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 wrenches to top or bottom stem guide surfaces 6 After removing the Stem Nut the remainder of the Disc Diaphragm Assembly should disassemble easily Polish stem guide surfaces with fine emery cloth to remove any miner...

Страница 21: ...consequential damages including without limitation lost profits or the cost of repairing or replacing other property which is damaged if this product does 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 over which the Company has no control This warrant...

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