Flowserve Nordstrom Hypregun-Plus 5G Pneumatic Valve Sealant Injector - Manual (Page 4)

Nordstrom Valves Hypregun - Plus 5G FCD NVENIM2004-00-AQ 10/14
4
Hypregun-Plus 5G
The Nordstrom Hypregun-Plus 5G was developed using the original
Nordstrom Hypregun design and modifications as suggested by
many Hypregun owners. This design continues to meet field and plant
maintenance needs of valve users.
The Hypregun-Plus 5G is ideal for large scale valve servicing in
refineries, compressor stations, gasoline plants, cycling plants,
pipelines, and manifold installations.
The Hypregun-Plus 5G is a compact, highly efficient, air operated
sealant injection device with a 100:1 pressure ratio, double-acting
piston and five-gallon can. Continued positive pressure applied to the
side cylinders assures intimate contact between the follower plate and
sealant. Positive pressure makes it possible for the Hypregun-Plus 5G
to pump sealant at a much lower temperature than is possible with
dispensing equipment without this feature.
The follower plate is engineered to promote flow of sealant to the foot
valve at all workable air pressures, but air pressures between 100
and 125 psi (6.9 to 8.6 bar) give the most efficient operation. Lower
air pressure can be used but the gun delivery volume will be reduced
accordingly. It is important that the gun not be used on air pressures
exceeding the 125 psi (8.6 bar) rating of the air motor. The air motor
uses a maximum of 11.4 cubic feet of air per minute when operated at
125 psi (8.6 bar) air pressure and with zero load. Reduced air pressure
and increased load reduce air consumption although not linearly.
The amount of sealant delivered by the Hypregun-Plus 5G depends on
available air pressure to the gun, type of sealant and the temperature
at which the sealant is dispensed.
A moisture trap (not supplied with the gun) for use on air sources
containing appreciable amounts of water is quite advantageous for low
temperature applications. Moisture, if allowed to reach the air motor,
can condense and freeze, causing the air motor to stall. Air line filters
for removing moisture from the air supply are available from several
manufacturers.
The Hypregun-Plus 5G is designed to use five-gallon (18.9 litre)
sealant cans, which have been materially strengthened with welded
seams. The five-quart conversion kit provides the option of using a
five-quart can in the five-gallon gun. These cans are standard for all
Nordstrom Valves bulk sealants. The container shield supplied with
each gun gives added strength to the can.
The Hypregun-Plus 5G has been designed to accept a standard
five-gallon can with shield. We do not recommend using other
containers or sealants developed by other manufacturers.
How to get the most out of your Hypregun-Plus 5G
The following suggestions will ensure efficient and continued operation
of the gun:
• If the air motor operates slowly because of low temperatures or
other causes, introduce light machine oil into the motor through
the air supply. This will, in most cases, free a stalled air motor and
permit it to operate more efficiently.
• Remove any service sealant from the exposed portion of the
pumping mechanism to reduce drag and prevent sealant from
entering portions of the gun not designed for this purpose.
• Provide a means of removing moisture from the air supply to the
gun if used at subfreezing temperatures. Use of air filters should
accomplish this purpose.
• Do not damage the thin walled cylinder surrounding the piston
of the air motor. Any imperfection in this cylinder will reduce the
effectiveness of the gun and shorten its life.