400-D HYDRAULIC HAND GUN
Assembly, Operation and
Maintenance Manual
Flow Control
Nordstrom Valves
Contents
Flowserve Nordstrom Valve Sealants............................................ |
2 |
Functions of Nordstrom Valve Sealants........................................ |
2 |
400-D Hydraulic Hand Gun........................................................... |
3 |
Operation...................................................................................... |
4 |
Kits and Accessories .................................................................... |
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Parts List ...................................................................................... |
6 |
Illustrations................................................................................... |
6 |
Care and Maintenance .................................................................. |
8 |
Troubleshooting Guide................................................................ |
11 |
Authorized Distributors............................................................... |
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Flowserve Nordstrom Valve Sealants
At Flowserve 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
•An experienced, dedicated staff ready to serve your needs
The success of Flowserve 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 highquality sealants range from -85°F to 700°F (-65°C to 371°C) and from air and water applications to the most aggressive line fluids.
Functions of Flowserve 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 ports. With proper selection of sealant for your particular service, a 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 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 between the bearing surfaces prevents metal-to-metal rubbing.
3.Renewable Seat: There is no need to disassemble a lubricated valve or to 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
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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 of 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 for easier operation.
400-D HYDRAULIC HAND GUN
Flow Control
Nordstrom Valves
400-D Hydraulic Hand Gun
The Flowserve Nordstrom 400-D High-Pressure Hand Gun is rated at 10,000–11,000 psi (690–759 bar) and includes many features for meeting the exact demands of replacing sealant in lubricated valves.
One of the most outstanding features of the 400-D Hand Gun is the large fluid capacity, which permits long periods of operation between recharging.
In the 400-D Hand Gun, any air entrapment is eliminated by adding fluid when recharging, automatically purging the system of air. The gun operates effectively in all positions.
The floating piston in the gun is solid. There is no cap screw to cause fluid leakage and eventual operation failure.
By using a special-formula hydraulic fluid in the pumping mechanism, the gun pumps smoothly and with minimum effort. Its powerful hydraulic floating piston principle forces sealant out of the gun with ease, regardless of the sealant viscosity.
The 400-D Hand Gun is equipped with a Giant Button Head Coupler for connection to the button head sealant fitting of the valve. This coupler has a design feature that locks it to the sealant fitting when the gun is under positive pressure. The coupler cannot be connected to or separated from the fitting with the gun under pressure.
Due to the “built-in” safety features, the 400-D Hand Gun provides maximum safety both to the user and the gun itself. The hydraulic system of the gun is equipped with an internal relief valve to protect the operator if pumping continues after the gun is depleted of sealant.
The internal relief valve is tamperproof and is relatively unaffected by temperature change and relieves approximately the same pressure at temperatures between 0°F (-18°C) and 80°F (27°C), assuring maximum pump output throughout the variation. A pressure gauge indicates the point at which sufficient
sealant pressure has been developed within the valve.
In designing the 400-D Hand Gun, engineers concentrated on greatly simplifying maintenance and repair procedures. In most cases, the gun can be easily maintained and repaired by valve service personnel, without requiring factory service.
400-D HYDRAULIC HAND GUN |
3 |
Flow Control
Nordstrom Valves
Operation
Preparing the
400-D Hand Gun for Use
The 400-D Hand Gun is packaged with the Sealant Barrel Cap and hose assembly separate from the gun. To make the 400-D Hand Gun operational, all you need to do is load the gun with sealant and attach the cap and hose assembly. Refer to the Nordstrom Sealant Brochure for information on the sealant required for your specific valve application.
Loading the 400-D Hand Gun with Sealant
The 400-D Hand Gun is capable of pumping all viscosities
of valve sealants. The barrel is designed to accept a size “J” sealant stick (1.50" diameter x 8.75" length). Bulk grade sealants can be loaded into the gun manually or by using Nordstrom Gun Pak. For the Gun Pak, insert the heat-sealed end of the bag first.
CAUTION: The 400-D Hand Gun is a hydraulic hand gun capable of developing high pressures. The following operating instructions should be read and followed closely to assure the safe and proper use of the equipment.
Note: Numbers in parentheses refer to gun parts, as illustrated on pages 6 and 7.
1.“Crack” open the By-Pass Valve (12) by turning counterclockwise less than one full turn. It should not be tightened against the By-Pass Stop (14). Backing
out the By-Pass Valve too far will allow air to enter the hydraulic system of the gun.
2.Remove the Sealant Barrel Cap (26), complete with hose assembly, using the Handle with Grip (1). The Handle is detachable and has a hole drilled near one end. By unscrewing the Handle and placing the hole over the protruding pin on the Sealant Barrel Cap, the cap may be easily removed and replaced.
3.Using the Handle as a push rod, return the Floating Piston (41) to the bottom of the Sealant Barrel (24).
4.Clean and replace the Handle.
5.Close the By-Pass Valve. Do not jam the By-Pass Valve into the seat, as this may damage the sealing member.
6.Insert the J-Stick or Gun Pak (heat-sealed end first) into the Sealant Barrel.
7.Operate the gun until the J-Stick or Gun Pak protrudes approximately ¼" (6 mm) from the end of the Sealant Barrel.
8.Replace the Sealant Barrel Cap and tighten snugly using the Handle.
9.Before attaching the Giant Button Head Coupler (44) to the valve sealant fitting, operate the gun until resistance is felt or the gun begins to build pressure (the hose will stiffen). Continue to pump until the internal relief valve releases and note the pressure at which this occurs.
10.Crack open the By-Pass Valve again to relieve pressure and then close. The 400-D Hand Gun is now ready for servicing lubricated valves.
Lubricating Valves
with the 400-D Hand Gun
1.Slide the Giant Button Head Coupler (44) over the button head fitting on the valve to be injected with sealant.
2.Tighten the By-Pass Valve (12).
3.Begin sealant injection by pumping the Handle
(1). It may take a number of strokes for the gun to prime itself and inject sealant into the valve.
4.As the valve sealant system becomes full, the gun should become harder to operate and a drop in pressure should be visible on the gauge. When the valve is full of sealant, open the By-Pass Valve and disengage the Giant
Button Head Coupler. (Hydraulic pressure must be removed from the gun before the coupler can be removed.)
Note: To retain most of the hydraulic pressure in the gun when removing from a valve, quickly crack open and close the By-Pass Valve. This will relieve enough hydraulic pressure to allow for easy removal of the coupler but maintain enough pressure to keep from repriming the gun between valves.
CAUTION: Do not continue pumping the gun after the sealant barrel has been emptied of sealant, as the Floating Piston Assembly may be damaged or the Gun Pak bag may be pumped into the hose.
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400-D HYDRAULIC HAND GUN |
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