Victaulic 317 Series Manuale utente

WARNING

• Read and understand all instructions before attempting to

install, remove, adjust, or perform maintenance on any Victaulic

piping products

• Wear safety glasses, hardhat, and foot protection.

Failure to follow these instructions could result in serious personal

injury, property damage, joint leakage, and/or joint failure.

WARNING

I-317

AWWA Check Valves

SERIES 317

I-317INSTALLATION AND MAINTENANCE INSTRUCTIONS

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IMPORTANT INFORMATION

WARNING

• Always check for flow in the line before

installing any accessory kits. If there

is flow in the line, disable the system’s

pump, or isolate the valve before

installing any accessories. The lever will

elevate when there is flow in the line.

Failure to follow these instructions could result in serious personal

injury and/or property damage.

VALVE INSTALLATION

1. Remove plastic from valve ends.

2. Valve ends and pipe ends must be smooth and free from deep

pits and swells. All rust, loose scale, oil, grease, and dirt must be

removed. Verify that pipe groove dimensions are within Victaulic

specifications for ductile iron pipe.

3. Make sure there is suitable clearance for proper operation of the

lever and any accessories.

4. THE ARROW ON THE VALVE BODY MUST CORRESPOND WITH

THE DIRECTION OF THE FLOW IN THE LINE.

5. Install the valve into the piping system by using Victaulic Style

31, 307, or 341 couplings. Refer to the installation information

provided with the coupling for complete instructions.

VALVE OPERATION

• TheSeries317CheckValvewillopenasupstreampressure

overcomes the pressure on the downstream side of the disc. The

valve will close as pressure equalizes or when pressure on the

downstream side of the disc overcomes the upstream pressure.

NOTE: The valve should not be operated manually.

• Makesurethereisnointerferencewiththeoperationandrangeof

motion of external accessories.

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VALVE ADJUSTMENT

WARNING

• Depressurize and drain the piping system

before adjusting any Victaulic piping

products.

Failure to follow this instruction could result in serious personal

injury and/or property damage.

NOTICE

• The Series 317 Check Valve should not require adjustment under

normal operating conditions.

1. For the adjustment of valve accessories, refer to the “Accessory Kit

Installation” section, starting on page 8.

2. To adjust packing box sealing, tighten the packing nut until leakage

stops.DONOTexceed20ft-lbs(27N•m)onthepackingnut.

If the packing fails to seal, replace the packing by following the

“Maintenance” section, starting on this page.

MAINTENANCE

WARNING

• Depressurize and drain the piping

system before attempting to perform

maintenance or adjustments on any

Victaulic piping products.

Failure to follow this instruction could result in serious personal

injury and/or property damage.

PACKING REPLACEMENT

1. Depressurize and drain the system to remove the valve from

service.

2. Remove any accessories from the valve.

3. Remove the packing nut.

4. Removeanddiscardtheoldpacking(fourpieces).

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Packing

Nut

Shaft Bearing/

Packing Box

Packing

Placement

5. Stack the NEW packing together (one male, two v-rings, one

female).Slidethepackingoverthehingeshaftandintothe

packing box.

6. Replace the packing nut. Tighten the packing nut to a torque of

10–15ft-lbs(14–20N•m).DONOTexceed20ft-lbs(27N•m).

7. Re-install any accessories by following the steps in the appropriate

section of the “Accessory Kit Installation” section, starting on page

O-RING AND PACKING REPLACEMENT

Packing

O-Rings

If leakage past the shaft bearings occurs, the o-rings and packing must

be replaced.

WARNING

• Depressurize and drain the piping

system before attempting to perform

maintenance or adjustments on any

Victaulic piping products.

Failure to follow this instruction could result in serious personal

injury and/or property damage.

1. Depressurize and drain the system to remove the valve from

service.

2. Remove any accessories from the valve.

3. Remove the packing nut.

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4. Removeanddiscardtheoldpacking(fourpieces).

5. Remove the shaft bearing/packing box from the valve. Be careful

not to damage the hinge shaft.

6. Remove and discard the old o-ring from the bearing.

7. Clean the bearing with water.

8. Lubricate the NEW o-ring with silicone grease.

9. Install the NEW o-ring onto the bearing. Make sure the o-ring is

pushed all the way down against the bearing.

10. Apply a non-permanent, thread-locking compound onto the first

two threads of the bearing.

11. Slide the bearing back onto the shaft, and tighten until snug. DO

NOT tighten the bearing completely or insert the packing at this

time.

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12. Remove the bearing from the opposite side of the valve. Be careful

not to damage the hinge shaft.

13. Remove and discard the old o-ring from the bearing.

14. Clean the bearing with water.

15. Lubricate the NEW o-ring with silicone grease.

16. Install the NEW o-ring onto the bearing. Make sure the o-ring is

pushed all the way down against the bearing.

17. Apply a non-permanent, thread-locking compound onto the first

two threads of the bearing.

18. Align the bearing with the hinge shaft, and thread the bearing into

position.

19. Tighten the two bearings to a torque of 100 – 150 ft-lbs

(136–203N•m).

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I-317INSTALLATION AND MAINTENANCE INSTRUCTIONS

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Packing

Nut

Shaft Bearing/

Packing Box

Packing

Placement

20. Stack the new packing together (one male, two v-rings, one

female).Slidethepackingoverthehingeshaftandintothe

packing box.

21. Replace the packing nut. Tighten the packing nut to a torque of

10–15ft-lbs(14–20N•m).DONOTexceed20ft-lbs(27N•m).

22. Re-install any accessories by following the steps in the appropriate

section of the “Accessory Kit Installation” section, starting on page

CLEANING

WARNING

• Depressurize and drain the piping

system before attempting to perform

maintenance or adjustments on any

Victaulic piping products.

Failure to follow this instruction could result in serious personal

injury and/or property damage.

1. Depressurize and drain the system to remove the valve from

service.

2. Loosen and remove the two bolts/nuts from the top access

coupling.

3. Remove the top access coupling.

4. Remove the gasket and the top access cap. If the gasket is torn or

worn, replace it with a new, Victaulic-supplied gasket of the same

grade.

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5. Remove any debris from inside the valve body.

6. If reusing the same gasket, make sure the gasket is free of any dirt.

Lubricate the gasket with Victaulic lubricant.

7. Install the gasket onto the valve. Make sure the gasket lip does not

overhang the end of the valve.

8. Install the top access cap onto the valve. Center the gasket to

cover both sealing areas of the cap and the valve.

9. Install the coupling housings over the gasket. Make sure the

housings’ keys engage properly with the valve body and the top

access cap.

10. Insert the bolts, and apply the nuts finger-tight. Make sure the bolt

track heads seat properly in the bolt holes.

10a. Tighten the nuts evenly by alternating sides until metal-to-metal

contact occurs at the bolt pads. NOTE: It is important to tighten

the nuts evenly to prevent gasket pinching.

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I-317INSTALLATION AND MAINTENANCE INSTRUCTIONS

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ACCESSORY KIT INSTALLATION

WARNING

• Depressurize and drain the piping

system before attempting to perform

maintenance or adjustments on any

Victaulic piping products.

Failure to follow this instruction could result in serious personal

injury and/or property damage.

WARNING

• Always check for flow in the line before

installing any accessory kits.

• If there is flow in the line, disable the

system’s pump, or isolate the valve before

installing any accessories.

• The valve’s arm will elevate when there is

flow in the line.

Failure to follow these instructions could result in serious personal

injury and/or property damage.

The following is a listing of proper installation orientations for the Series

317 Check Valve.

Option 1

Horizontal

Orientation

Vertical

Orientation

Bare Yes Yes

Lever with Weight Yes Yes2

Lever with Spring Yes Yes

Lever with Adjustable

Spring3and Air Cushion Yes Yes

1. Valves installed without air cushions are subject to slamming.

2. For proper operation in vertical installations, the lever must be rotated 90˚(refer to instructions on page 8).

3. All valves installed with an air cushion must also contain an adjustable spring. NOTE: This is not the same

spring that is provided with non-air cushion options.

LEVER WITH WEIGHT (HORIZONTAL INSTALLATIONS)

Key

1. Insert the key into the keyway in the shaft. Install the lever onto the

shaft by aligning the keyway in the lever with the key in the shaft.

Tighten the set screw by using an allen wrench.

2. Slide the weight to the desired location on the lever. Install a flat

washer and nut onto the bolt. Tighten the nut to secure the weight

in position.

LEVER WITH WEIGHT (VERTICAL INSTALLATIONS)

Key

1. Insert the key into the keyway in the shaft, as shown above. Install

the lever onto the shaft by aligning the keyway in the lever with the

key in the shaft. NOTE: The flow arrow must be pointing upward,

and the lever must be installed in the orientation shown above.

Tighten the set screw by using an allen wrench.

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2. Slide the weight to the desired location on the lever. Install a flat

washer and nut onto the bolt. Tighten the nut to secure the weight

in position.

LEVER WITH SPRING

Key

1. Insert the key into the keyway in the shaft. Install the lever onto the

shaft by aligning the keyway in the lever with the key in the shaft.

Tighten the set screw by using an allen wrench.

2. Install a nut onto the end of the eye bolt. Thread the eye bolt into

the tapped hole furthest from the shaft, as shown above.

3. Tighten the nut to secure the eye bolt.

4. Install the spring by looping one end over the eye bolt and the

other end through the slot in the lever.

LEVER WITH SPRING AND AIR CUSHION

Key

1. Insert the key into the keyway in the shaft. Install the lever onto the

shaft by aligning the keyway in the lever with the key in the shaft.

Tighten the set screw by using an allen wrench.

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