Flowserve Nordstrom Hypregun-Plus 5G Pneumatic Valve Sealant Injector - Manual (Page 14)

Nordstrom Valves Hypregun - Plus 5G FCD NVENIM2004-00-AQ 10/14
14
Operation
The numbers in parentheses refer to Hypregun-Plus 5G parts as
illustrated on pages 5 and 6 of this manual.
1. The air coupler (17) will be found attached to the nipple (7)
as shown in Section A-A. The air hose connector should be
connected to the air supply hose.
2. Fasten the can shield (72, Figure 1) in place around the five-gallon
(18.9 liter) sealant can below the reinforcing rib and with the can
seam covered by the retainer.
3. Slightly mound the sealant in the container so that the concave
shaped follower plate can be brought down on the sealant with a
minimum entrapment of air.
4. Raise the pump mechanism and sealant follower plate prior to
inserting the sealant container into the gun. By connecting the air
supply hose to the air supply nipple (57, Figure 2) in the base of
the pump and opening the ram needle valve (8, Section A-A) the
follower (34, Figure 1) will rise sufficiently to clear the top of the
sealant container.
5. Place the can with the can shield in the operating position in the
Hypregun-Plus 5G. The relief valve tested on the follower plate
can be left open initially to quickly remove air trapped between
the follower and the sealant in the can. It should be closed once
the follower makes contact with the sealant in the pail to ensure
proper priming of the down tube and to prevent sealant from
accumulating on top of the follower plate.
6. Be sure the valve screw (63, Figure 1) in the pump body is
closed. Connect the air supply hose to the nipple (7, Section A-A).
The ram needle valve should be opened slowly causing the air
pressure to force the follower plate (34, Figure 1) down toward
the sealant container.
a
CAUTION: Keep fingers clear as the follower plate
descends into the sealant container.
Care should be exercised that the sealant container is directly
under the follower plate as the two are brought into contact. Once
the follower plate has entered the top of the sealant container,
open the ram needle valve 2 1/2 turns from closed position.
7. As shown in Section B-B, the relief valve (64) is opened fully
while the valve screw (63, Figure 1) is opened two turns.
8. With the air motor throttle valve closed (3, Figure 1), allow the
column between the sealant container and relief valve (64, Section
B-B) to fill with sealant with the pressure of the follower plate
alone. After a steady flow of sealant is obtained at the relief valve,
open the throttle valve and pump sealant through the vent valve
until there are no air bubbles. (If the available line pressure is not
sufficient to push sealant through the relief valve by the follower
plate pressure alone, open the air motor throttle valve before the
sealant comes out the vent valve.)
9. After venting of the air is complete, close the valve screw (63,
Figure 1) and the relief valve (64, Section B-B) and read the
pressure gauge (65, Figure 1). If the pressure gauge does not
read several thousand pounds sealant pressure, the relief valve
(64) and the valve screw (63) should be opened again to allow
further venting. Repeat this operation as required. Occasionally,
the Hypregun-Plus 5G may become air bound during operation.
If this occurs, repeat the procedure for air venting as outlined
above.
10. With the shutoff and relief valve (78, Section B-B) in the closed
position, the button head coupler (69, Section B-B) should be
slipped over the button head fitting on the valve to be injected.
Open the shut-off valve (a small wrench may be required). Adjust
the air throttle valve (3, Figure 1) on the air motor and observe
sealant pressure on the gauge (65, Figure 1) to ensure proper
sealant flow and pressure for plug valves.
a
WARNING: High pressure injection of sealant into low
pressure iron and semi-steel bodied valves may deform or
destroy certain valve parts which could result in personal
injury. Follow the valve manufacturers recommended
procedures for sealant injection.
11. After the valve is injected with sealant, close the shutoff and
relief valve (78, Section B-B). Remove the button head coupler
(69, Section B-B) from the fitting on the valve. This may be done
without turning off the air supply to the air motor. By using the
shut off valve, the user can attach the coupler or remove it from
the fitting with the gun retaining positive pressure.
12. When all of the sealant has been pumped from the sealant
container, close the throttle valve (3, Figure 1) and transfer the air
supply hose to the air supply nipple (57, Figure 2) on the base of
the gun. With the ram needle valve (8, Section A-A) open, the gun
mechanism is raised, lifting the sealant container off of the gun
base. Close the ram needle valve.
13. Unclip the can shield and remove. Remove the can from the
follower. It may be necessary to attach the air supply to the relief
valve nipple (57, Section B-B) and slowly open the relief valve (64,
Section B-B) 1/4 turn to allow air to enter the can. The can will be
forced from the follower. Additionally, air can be connected to the
follower plate relief valve nipple (57, Figure 1).
14. In changing from one service sealant to another, it is advisable to
purge the gun sealant system. To do this, pump the new sealant
through the delivery hose, with the coupler removed, until the old
sealant has been purged.