Bladder Gas Valve Assembly
Should the bladder have to be replaced and the gas valve is
in good condition it is possible to fit a new bladder to the old
gas valve (or vice-versa) taking care to ensure that the
edge of the mouth piece makes a perfect fit with the valve
seat. The valve is then put into place, by means of hand
pressure on the rubber coated washer until it is no longer
possible to remove unless force is used. The bladder can
now be inserted into the Accumulator.
Assembling the Accumulator
Ensure that all components are in good condition and
perfectly clean. Assemble in the following order:
High Pressure Range ( AS / ASHF / ASWP):
Ÿ
Insert the bladder (use a threaded tube M 12 x 1.5).
(Fig. A-1)
Ÿ
Mount name plate and nut for the gas valve body. (Fig.
A-2)
Ÿ
Tighten the nut holding the gas valve body with a
spanner. (Fig. A-3)
Ÿ
Insert the fluid port assembly and the rubber coated
retaining ring. (Fig. A-4)
Ÿ
Locate the fluid port on to the support ring, fit gaskets
and spacer ring. (Fig. A-5)
Ÿ
Tighten the ring nut making sure the assembly is
centrally located. (Fig. A-6)
Ÿ
Fit the bleed screw and gasket. Pour a small amount of
liquid into the accumulator to lubricate. (Fig. A-7)
Ÿ
Finally mount the gas-fill valve, charge accordingly to
Checking & Charging - page-20 and again tighten the
gas valve nut.
Low Pressure Range (ASWD):
Ÿ
Insert the bladder (use a threaded tube M 12 x 1.5)
Ÿ
Mount name plate and nut for the gas valve body.
Ÿ
Tighten the nut holding the gas valve body with a
spanner
Ÿ
Tighten the anti-extrusion body assembly.
Ÿ
Tighten the reducer assembly.
Ÿ
Fit the bleed screw and gasket. Pour a small amount
of liquid into the Accumulator to lubricate.
Ÿ
Finally mount the gas-fill valve, charge accordingly to
Checking & Charging - page-20 and again tighten the
gas valve nut.
Large Volume Range ( ASLV / ASLVHF)
Refer page # for the spare parts information.
Ÿ
Remove lifting hook (Item # 19)
Ÿ
Connect charging kit type PC to the Gas Fill Valve
(Item # 7) and discharge the accumulator
completely.
Ÿ
Remove Gas Fill Valve (Item # 7).
Ÿ
Connected a threaded tube (M12 x 1.5) onto the gas
valve.
Ÿ
Remove Air Bleed Screw (Item # 20) & Seal Ring
(Item # 21) to bleed the air in the vessel.
Ÿ
Remove Gas Valve Lock Nut (Item # 5).
Ÿ
Unscrew the nuts and remove the Top Cover.
Ÿ
Remove the Circlip (Item # 16).
Ÿ
Pull the bladder assembly upwards (from the gas
side) pressing the bladder and slightly twisting.
Ÿ
Once the bladder is completely taken out of the shell
inspect the bladder and o-rings (Item # 17, 18 & 22).
Ÿ
Replace the damaged components.
For reassembly follow the above procedure in reverse
order. While reassembling ensure the bladder surface is
suitably oiled with the system fluid.
Operation & Maintenance
A-1 A-2 A-3
A-4 A-5 A-6
A-7
23
Fig.19
