External surfaces of the tool (except of the face surface) are wiped
over with clean cleaning cloth slightly wetted with petrol and then, are
wiped dry.
8.2.2. Maintenance of the manual valve
The outlet valve is cleaned with clean petrol, a brush and cleaning
cloth. Before cleaning, remove the valve from the level gauge, place it into
a clean reservoir and pour out a little petrol. Not taking the valve out of the
reservoir, push the
handle several times.
Clean the external
surfaces with a brush.
Do not leave the
valve into petrol for a
long time. After
washing the valve,
wipe it dry with clean
cleaning cloth. Before
placing the valve
back into the level
gauge, lubricate
slightly the rubber
sealing ring with
surface of a rubber
sealing ring (7) with
lubrication CIATIM GOST 6267-80. After mounting the valve on the well
sounder, install the latter on the Inspection bench for well sounders SKU-1
IZM 4.137.003 (SIAM Company) and purge the valve at pressure of 5…8
atm, using clean air. Test for pressure integrity with a soap solution. A
slight “seepage” is allowed with small bubbles in the discharge hole area.
In case of a high "seepage", repeat the valve washing process.
If the valve continues to "bleed" heavily, replace the valve pair (tappet
and ball (4) and seating (3). To do this, gently squeeze the retaining ring (5)
and remove it from the valve body. Remove the guide sleeve (1), the spring
(6) and the pusher with ball (4) from the valve body. Remove the seating
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