Flowserve 400-D - Manual (Page 3)

400-D HYDRAULIC HAND GUN
3
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.
Flow Control
Nordstrom Valves