INSTALLATION, OPERATION AND
MAINTENANCE MANUAL
Drawing C-1239 Figures 221-D, 221-DS, 221-U and 221-US
Single-Increasing Lever & Weight Swing Check Valves
(3"x 4", 4"x 6", 8"x 10" and 10"x 12")
Drawing C-1164 Figures 222-D, 222-DS, 222-U and 222-US
Double-Increasing Lever & Weight Swing Check Valves
(3"x 6", 4"x 8", 6"x 10", 8"x 12" and 10"x 14")
9025 Marshall Road • Cranberry Township, PA 16066 USA
Telephone (724) 776-1020 • Fax (724) 776-1254
TABLE OF CONTENTS
Introduction .................................. 1
Description of Operation
Receiving & Storage ....................... 1
Installation ..................................... 1
Valve Construction ......................... 2
Start-Up ........................................ 2
Preventive Maintenance .................. 2
Trouble Shooting ........................... 2
Disassembly .................................. 2
Assembly ...................................... 3
Parts List ...................................... 3
Figure 221 Drawing/Parts Location .... 4
Figure 222 Drawing/Parts Location .... 5
Warranty ....................................... 6
E-mail:
info-ga@vag-group.com
Manual Number 221-222-IOM-0818R0
................. 1