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PLUS 5Q
User Manual
16 pgs3.9 Mb1

Flowserve PLUS 5Q User Manual

NORDSTROM HYPREGUN®–PLUS 5Q Assembly, Operation and Maintenance Manual
Contents
Nordstrom Valve Sealants............................................................. 2
Functions of Nordstrom Valve Sealants ........................................ 3
Hypregun-Plus 5Q ........................................................................ 4
Illustrations ............................................................................ 5 & 6
Parts List ...................................................................................... 7
Flow Control
Nordstrom Valves
Nordstrom Valve Sealants
At Flowserve Nordstrom Valves, our primary goal is to serve lubricated valve users with the highest quality sealant and sealant injection equipment. We offer:
• A broad variety of valve sealants
• A flexible service-oriented manufacturing facility providing outstanding quality control
• An experienced, dedicated staff ready to serve your needs
Replacement Parts and Kits ................................................... 8 & 9
Assembly Instructions .......................................................10 & 11
Nordstrom Valves success comes from customer service. Competent, experienced personnel handle your orders from development ... to order entry ... to manufacturing ... to shipping.
We supply the most advanced formulations. Our high-quality sealants range from -85°F to 700°F (-65°C to
371.1°C) ... and from air and water applications to the most
aggressive line fluids.
Consult your authorized Nordstrom Distributor for information on valve sealants.
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NORDSTROM HYPREGUN-PLUS 5Q
Flow Control
Nordstrom Valves
Functions of Nordstrom Valve Sealants
1. Drop-Tight Seal - To secure an absolutely tight seal,
the film of the sealant works to form a seal between the sealing surfaces of the valve. The seal is formed by sealant transmitted through a system of passageways around the valve port. With proper selection of sealant for your particular service, the seal can be retained over a wide range of temper­atures and pressures.
2. Lubrication - Prevents metal-to-metal contact of the valve
sealing surfaces by filming over bearing irregularities. No matter how finely ground a metal surface may be, the metal is a series of tiny peaks and valleys. As one metal surface slides against another, friction is set up and adhesion, shearing, or plowing may result. A protective film of sealant over the bearing area prevents metal-to-metal rubbing.
3. Renewable Seat - There is no need to disassemble a
lubricated valve or remove it from service to replace mildly damaged seats. Sealant, as a structural part of lubricated valves, provides a flexible and renewable seat, eliminating the necessity of force fit contact to effect a seal. For this purpose, the sealant not only must have proper plasticity, but also resistance to line fluids such as solvents and chemicals. Sealant forms a seal between the sealing surfaces of the valve even under pressure.
4. Plug Jacking - The fundamental operating principle of the
traditional lubricated plug valve design lies in the application of Pascal’s Law. The law states that a unit pressure applied to the liquid contained in a sealed vessel is transmitted to every part of the liquid with undiminished force, thus multiplying the force many times, depending on the area of the interior of the vessel. The sealant, under pressure developed by sealant injection, supplies the hydraulic means for lifting the plug from its tapered seat when and if that force is needed to free the plug.
Nordstrom Valves offers more than twenty five varieties of sealants for plug, ball, and gate valves. Stick and bulk grades are available in most formulas.
NORDSTROM HYPREGUN-PLUS 5Q
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Hypregun-Plus 5Q
Flow Control
Nordstrom Valves
The Flowserve Nordstrom Hypregun-Plus 5Q 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 5Q is ideal for large scale valve servicing in refineries, compressor stations, gasoline plants, cycling plants, pipelines, and manifold installations. The Hypregun-Plus 5Q is a compact, highly efficient, air operated sealant injection device with a 100:1 pressure ratio, double acting piston, and five quart 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 5Q 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 5Q 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 5Q is designed to use five-quart (4.7 litre) sealant cans, which have been materially strengthened with welded seams. These cans are standard containers for all Nordstrom bulk sealants. The can shield supplied with each gun gives added strength to the can. The five-quart (4.7 litre) can and shield have been developed specifically for use with the Hypregun-Plus 5Q. We do not recommend using other containers or sealants developed by other manufacturers.
How to get the most out of your Hypregun-Plus 5Q
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.
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Nordstrom Valves
Illustration
NORDSTROM HYPREGUN-PLUS 5Q
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