background image

STEP 8

Closing 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 adjustment screw OUT, counterclockwise, increasing the rate of 

closing (See Figure 3).

STEP 9

(If Installed) Opening Speed Flow Control Adjustment: The Opening 

speed flow control allows free flow into the cover and restricted flow 

out of the cover of the main valve. If valve opening is too slow, turn 

the adjustment screw OUT, counterclockwise, increasing the rate 

of opening. If valve opening is too quick, turn the adjustment screw 

IN, clockwise, decreasing the rate of opening (See Figure 3).

STEP 10

Actuate the solenoid to close the main valve, checking that it 

closes.

Counterclockwise to INCREASE 

the rate of opening

Clockwise to DECREASE 

rate of opening

Figure 3 

Flow Control

4          IOM-ACV-116-32_6116-32 2115 

EDP# 1917049 

© 2021 Watts

IOM-ACV-116-32_6116-32 2115 

EDP# 1917049 

© 2021 Watts         5

Содержание LFM116-32

Страница 1: ...lation 2 Setting the Pressure Controls 3 Maintenance Schedule 6 Trouble Shooting Guide 6 Valve Disassembly Instructions 8 ACV Schematic 11 Local building or plumbing codes may require modifica tions t...

Страница 2: ...pressure in the upstream zone falls below the pilot setting the valve modulates toward a closed position sustaining pressure in the upstream zone The valve will close if necessary until upstream pres...

Страница 3: ...ve does not include a bleed valve bleed air by loosening a fitting on the valve or a plug at the highest point of the valve as sembly STEP 5 Pressure the line by opening the upstream isolation valve s...

Страница 4: ...to the desired setting STEP 4 Adjust the Sustaining Control screw IN clockwise until the inlet pressure begins to increase or OUT counterclockwise to de crease stopping at the desired pressure See Fi...

Страница 5: ...eed flow control allows free flow into the cover and restricted flow out of the cover of the main valve If valve opening is too slow turn the adjustment screw OUT counterclockwise increasing the rate...

Страница 6: ...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 diaphragm...

Страница 7: ...Adjust opening speed control to verify functionality adjust as required Standard setting for open ing speed control is 1 1 2 2 1 2 turns open from full closed position Can be adjusted in field Main Va...

Страница 8: ...emove cover nuts and washers 3 Remove the cover If cover is not free to be removed loosen it by tapping upward along its outside edge with a dull cold chisel pic tured above a Large valves may require...

Страница 9: ...rush or by using a Mineral Dissolving Solution Inspect parts for wear and replace if necessary 7 Inspect valve seat If seat is not damaged removal is not necessary Valve seats 6 and smaller are thread...

Страница 10: ...uts in a crossing pattern 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 integri...

Страница 11: ...el 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 Iro...

Страница 12: ...ot be responsible for any incidental special or consequential damages including without limitation lost profits or the cost of repairing or replacing other property which is damaged if this product do...

Отзывы: