Hale Torrent SVS Stainless Steel Valves - Manual (Page 97)

b) Quadrant journals (particularly upper journal beneath the
indicator cap)
c) Quadrant bores
d) Actuator mounting face
e) Any moving parts on declutch type units or lever arm units
f) Electric switches and ancillary equipment
g) The nameplate or instruction plates may be removed
temporarily or masked
6.2 After final painting, clean and apply a small amount of grease around the
top quadrant journal as this can wash out with cleaning solvents on the
painting process. Failure to pay attention to this detail may result in
premature corrosion at this point.
7.0 OPERATION
7.1 For manual operation, rotate the handwheel in the desired direction to
open or close the valve. Industry standard is clockwise rotation to close.
Check that this is the case for your application. Refer to the indicator cap
pointer for actual positions of valve seat prior to operation.
7.2
For electric/hydraulic/pneumatic drive refer to the drive manufacturer’s
instructions.
7.3 Worm declutch units (MVWD, MAWD, MCWD) will normally be in the
disengaged position and are only engaged when a pneumatic failure
occurs. To engage, lift plunger, raise handle to the position where the
plunger automatically springs into position. The handwheel will normally
need rotating to help with geartooth meshing. There is an instruction
plate on the cover of all units. To disengage reverse the engagement
procedure.
7.4 P & Q type declutch units are normally in the disengaged position and are
only engaged when a pneumatic or hydraulic failure occurs. On P type
declutch units; turn the handle 90
° to allow the internal drive key to
engage in the valve stem. Q type declutch operation is exactly as the P
type, but the handle has to be held down to engage the key into the stem.
Disengage when pneumatic or hydraulic drive is utilized.
8.0 MAINTENANCE
The units require very little maintenance if all storage and installation procedures
have been followed. It is good practice at six monthly intervals to add a small
amount of grease around the top quadrant journal (ref. Painting Section 6.2) and
also around the input shaft on handwheel drives. If the valve is normally idle,
operate one full open/shut/open cycle every three months.
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