TECHNICAL DATA
May 28, 2013
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: [email protected]
Preaction 325j
4” MoDEL G-4000P PrEACTIoN
wITH ELECTrIC rELEAsE
6. The cover and trim that is still connected may now be removed �rom the valve 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 (10) may be li�ted �rom the valve body (1).
2. I� necessary, re�lace the check dia�hragm (10).
D. Inspecting the Prime Chamber and Coupling for Leaks:
(Re�er to Figure 5.)
I� desired, it is �ossible to set the G-4000P �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-4000P �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 (7), remove the cou�ling (7) �rom the valve body (1).
3. Ins�ect the cou�ling (7) and O-rings (5 and 6). 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-4000P �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 (7) into the valve body (1). Make sure the end o� the �rime cou�ling (7) is inserted into the �rime
chamber assembly (4).
3. Tighten the 1/4” socket set screw (8).
4. Lay the check dia�hragm (10) into the valve body (1).
5. Position the cover onto the valve body (1), and install and tighten the cover screws (12).
6. Re-install any trim that was removed.
7. Place the valve in service by �ollowing the ste�s in Section 4.F.
8. AVAILABILITy
The �iking Model G-4000P �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.
