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ES-A-ACV-LF985GD  2115 

© 2021 Watts

LEAD FREE

*

Model LFFC 

Flow Control

Size:  Standard Flow - 

1/2

" MNPTx 

3/8

" FNPT  

 

High Flow - 

1/2

" MxF NPT

A Flow Control is an adjustable device used for tuning valve per-

formance. It can be installed to either control the opening or clos-

ing the speed of the automatic control main valve. When the flow 

is in the direction of the needle the flow control is an adjustable 

restriction. 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 - 

½

" MNPT x 

3/8

" FNPT  

 

High Flow - 

½

" MxF NPT

Body Material:

   Lead Free Brass  

 

Stainless Steel (optional)

Seat:

 

Lead Free Brass

Needle:

 

Stainless Steel (304)

Elastomers:

 

Buna-N (standard)  

 

  

* The wetted surface of this product contacted by consumable water 

contains less than 0.25% of lead by weight.

ACV Standard Components - Series LF985GD

Содержание AMES LF985GD Series

Страница 1: ...al 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 condition...

Страница 2: ...e pump starts and stops against an open valve Pump start up When the pump is signaled to start the 4 Way Solenoid is energized and directs fluid and pressure into the cover chamber above the diaphragm...

Страница 3: ...ly This assembly is the only moving part within the valve allowing it to open or close as commanded by the pilot control system When pressure is applied to the upper diaphragm chamber and released fro...

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...

Страница 5: ...e Iron 11 Diaphragm Buna N Nitrile 12 Inner Bearing Bolts 3 and Smaller ASTM A276 304 Stainless Steel 13 Inner Bearing Retainer 3 and Smaller ASTM A276 302 Stainless Steel 13A Bearing Retaining Ring 4...

Страница 6: ...nter Angle Thread Angle 150 Angle 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...

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 actio...

Страница 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...

Страница 9: ...n 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...

Страница 10: ...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...

Страница 11: ...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...

Страница 12: ...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...

Страница 13: ...made during installation to protect the piping circuit from dam age Only remove the pilot control system from the valve if necessary Tubing and fittings should be kept clean and replaced exactly as re...

Страница 14: ...of movement and remove excess air trapped within the cover chambers See Figure 1 Below To increase the rate of opening closing turn the adjustment screws on the speed controls OUT counterclockwise In...

Страница 15: ...e flow goes into the lower chamber the Opening speed flow control restricts flow out of the upper cham ber of the main valve If valve opening is too slow turn the adjustment screw OUT counterclockwise...

Страница 16: ...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...

Страница 17: ...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...

Страница 18: ...em Nut 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...

Страница 19: ...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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