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Vag GA INDUSTRIES 250-DOC, Installation, Operation And Maintenance Manual

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INSTALLATION, OPERATION AND 

MAINTENANCE MANUAL 

 

Figure 250-DOC Drawing C-1448  

42

”-60” Oil-Cushioned                              

Lever & Weight Swing Check Valves 

 

TABLE OF CONTENTS 

 

Introduction 

….…………………………  1 

 

Description of Operation  .....

…………  1 

 

Receiving & Storage  .....

………………  1 

 

Installation  ......

………………………….  1 

 

Valve Construction  ......

……………….  2 

 

Start-Up  ...

……………………………….  2 

 

Preventive Maintenance  ....

…………..  2 

 

Trouble Shooting  ...

……………………  2 

 

Disassembly  ....

…………………………  2 

 

Assembly  ....

…………………………….  3 

 

Warranty 

.………………………………..  3 

 

Parts List 

………………………………..  4 

 

Assembly Drawing/Parts Location  ....  5 

 

 

 

 

 

234 Clay Avenue 

• Mars, PA 16046 USA 

Telephone (724) 776-1020 

• Fax (724) 776-1254 

E-mail: 

[email protected]

 

 

 

 

Manual Number 250OC-IOM-070722

Summary of Contents for GA INDUSTRIES 250-DOC

Page 1: ...n 1 Description of Operation 1 Receiving Storage 1 Installation 1 Valve Construction 2 Start Up 2 Preventive Maintenance 2 Trouble Shooting 2 Disassembly 2 Assembly 3 Warranty 3 Parts List 4 Assembly Drawing Parts Location 5 234 Clay Avenue Mars PA 16046 USA Telephone 724 776 1020 Fax 724 776 1254 E mail info ga vag group com Manual Number 250OC IOM 070722 ...

Page 2: ...DAOC indicates the valve is configured for installation in a vertical pipe with upward flow Consult the drawings of record to verify the configuration supplied and installed Prior to installation ensure all debris packing material or other foreign material has been removed from both ports The valve can be installed in a horizontal or vertical upward flow direction pipe In either case the counterwe...

Page 3: ...lve prior to flow reversal The oil cushion chamber is installed directly beneath the counterweights When the valve is closed there should be a slight gap approximately 1 8 between the counterweight and the shock absorber striker plate During gradual valve closure the counterweights may not engage the oil cushion as there would be no need for cushioning This may occur when a VFD ramps down or the p...

Page 4: ...c 3 8 Remove the seat follower screws 5B follower ring 5A and resilient seat 5 from the disc 9 In the unlikely event it s necessary to remove the body seat 2 remove the seat screws 5C and body seat 2 Inspect all parts for wear and damage Replace damaged parts ASSEMBLY The valve is reassembled by reversing the disassembly sequence with consideration of the following 1a Clean and polish all machined...

Page 5: ... Std Material 40 Disc Guide Screws Zinc Plated Steel 41 Disc Arm Cotter Pin Stainless Steel 42 Disc Arm Washer Stainless Steel 43 Shock Absorber EGD SS22 41 44 Mounting Bracket Steel 45 Bracket Mounting Bolt Zinc Plated Steel 46 Mounting Bolt Zinc Plated Steel 47 Striker Plate Steel 48 Striker Plate Jam Nut Zinc Plated Steel 49 Gib Head Key Steel 51 C weight Retainer Steel 52 C weight Retainer Pin...

Page 6: ...5 ...

Page 7: ...6 ...

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