1728 Orbit Way - Minden, Nevada 89423 P: 775-782-1700 F: 775-782-1701 info@maxtonvalve.com www.maxtonvalve.com
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Seal kit # 291510 (for UC1/1A/2/2A valves) contains field replaceable seals and piston rings for
these model valves. The check piston, and the piston seat assemblies are not considered
removable, and seal parts for these assemblies are not provided.
Seal kit # 291540 (for UC4/4M/4MR valves) contains field replaceable seals as well as a BPS adjust-
er (#283330). Due to the presence of an internal seal, and the nature of the problems should the
seal fail, it is recommended that the BPS adjuster be replaced during periodic
maintenance (3-5 years), and whenever valve seals must otherwise be replaced. Seals for the piston
seat assemblies in these valves are not provided as the seats vary between valve years, are not
easily removed and can be improperly re-installed in the field.
Seal kit # 291500 is used to replace the seals in the OSV (seismic safety or pipe rupture) valve.
UC1/UC1A/UC2/UC2A valves manufactured prior to 1980 have solenoid stems that are held in place
with a snap ring. There are no longer parts, seats or seals available for this style solenoid assembly.
The valve can be returned to Maxton for repair and return including an upgrade to the current style
blocks (re-porting of the valve body) or may be replaced through the purchase of a new valve or
valve exchange program
Solenoid kit # 29292A (UC1/1A/2/2A valves) Each kit contains matched solenoid seats, ball cages
and solenoid tube assemblies sufficient for one valve.
Solenoid kit # 292920 (UC4/4M/4MR valves) Each kit contains matched solenoid seats, ball cages
and solenoid tube assemblies sufficient for one valve.
For valves manufactured since May 1995, Seat kit # 29298A-2 (UC1/1A/2/2A/UC4/4M/4MR valves)
is used to replace the solenoid seats only.
When replacing a UC3/3A/3AM or UC4 series valve, the pump flange assembly must also be
replaced. This pump flange assembly has moving parts with a service life.
To provide trouble free startup and operation, the oil system should be purged and the oil filtered or
replaced when a valve replacement takes place.
FACTORY RECONDITIONED VALVES ARE AVAILABLE ON AN EXCHANGE BASIS
V. E. P.
Valve Exchange Program
2-YEAR Limited factory warranty – most models available for immediate shipment
CONTACT MAXTON SALES DEPARTMENT FOR ADDITIONAL INFORMATION
SEAL KIT AND SAFE USE RECOMMENDATIONS
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