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Preaction 328j
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
5. Remove the 8 cover screws (8).
6. The cover and trim that is still connected may now be removed �rom the body. (It may be necessary to �ry the valve o�en as
the dia�hragm may bond itsel� to the cover and body over time.)
C. removing / replacing the Check Diaphragm: (Re�er to Figure 11)
1. The check dia�hragm (7) may be li�ted �rom the valve body (1).
2. I� necessary, re�lace the check dia�hragm (7).
D. Inspecting the Prime Chamber and Coupling for Leaks: (Re�er to Figure 5)
I� desired, it is �ossible to set the Model G-2000P �alve and ins�ect �or leaks with the cover removed.
1. Slowly o�en the �rime valve.
2. With �rime water established, �artially o�en the main water su��ly control valve.
3. �isually ins�ect the inside o� the G-2000P �alve �or leaks.
4. Close the water su��ly control valve.
E. removing / replacing the Prime Coupling: (Re�er to Figure 11)
1. O�en the 1/2" union on the �rime line.
2. Using a wrench on the �lats o� the cou�ling (6), remove the cou�ling (6) �rom the valve body (1).
3. Ins�ect the cou�ling (6) and O-rings (5). Re�lace i� necessary, , using the instructions in O-Ring Re�lacement Bulletin
F_120611.
F. removing / replacing the Prime Chamber Assembly: (Re�er to Figure 11)
1. The �rime chamber assembly (4) is now held in �lace by two �langes on the outside diameter o� the assembly. Slide the �rime
chamber assembly (4) toward the �rime line and remove �rom the body (1).
2. Ins�ect and re�lace i� necessary.
3. Ins�ect the seat. The seat should be clean and �ree o� �oreign material. I� the seat is damaged, the G-2000P �alve must be
re�laced.
G. re-Assembling the Valve: (Re�er to Figure 11)
1. Place the �rime chamber assembly (4) in the valve body (1). Make sure the two �langes are �ositioned in the groove.
2. Thread the �rime cou�ling (6) into the valve body (1). Make sure the end o� the �rime cou�ling (6) is inserted into the �rime
chamber assembly (4).
3. Lay the check dia�hragm (7) into the valve body (1).
4. Position the cover onto the valve body (1), and install and tighten the cover screws (8).
5. Re-install any trim that was removed.
6. Place the valve in service by �ollowing the ste�s in Section 4.F.
8. AVAILABILITy
The �iking Model G-2000P �alve is available through a network o� domestic and international distributors. See the �iking Cor�. Web
site �or closest distributor or contact The �iking Cor�oration.
TECHNICAL DATA
2" MoDEL G-2000P PrEACTIoN
wITH ELECTrIC rELEAsE
January 6, 2012
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