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FUNCTION
The glove valve is used where throttling alone
or both throttling and shutoff is needed. It may
also be used for on-off service, but because of
high pressure drop, such application is limited
to the cases that the valve is normally closed
and the pressure drop is of no importance in valve
open condition. PK cast steel globe valve is regularly
made in outside screw and yoke design with full-way
type disc.
BODY
AND BONNET
The body has a spherical form with large radius,
which permits the stress, turbulence and resistance
to flow to be kept minimum. The bonnets on valve
are equipped with back seat rings.
BODY-BONNET
JOINT
Body-bonnet
joint of globe valve is machined as follows: Class150
:Male and female.
Class300 and 600 : Male and female.
Class900 and 1500 :Ring joint.
We can supply any kinds of gasket as required
by customer.
DISC
The
valve is normally supplied with plug type disc.
SEAT
RING
The
valve is normally supplied with bottom seated
type on 8" or larger valves, and the disc
has bottom guide type seat rings.
STEM
All
stems have the turning and rising cut ACME threads.
YOKE
BUSH
The
yoke nuts on globe valve are threaded and mounted
to the bonnet, where it is secured with tack welding.
PACKING
The
packing size is designed to secure maximum tightness
along the stem, and the standard packing is a
non-asbestos type. We can supply any kinds of
packing as required by customer.
GLAND
The
gland is made of two pieces. Packing gland is
in contact with the packing which is connected
to gland flange through a spherical joint. Particular
design permits a correct pressure on the packing
without any damage to stem due to friction or
corrosion.
STUFFING
BOX
The
stuffing box gives maximum packing stem seal.
Lantern ring and grease injector shall be furnished
only if specified on the purchase order.
HAND
WHEELS
Hand
wheels are designed for easy operation. They are
provided with hammer blow type of 8" or over
for Class 150 valves, 6" or over for Class
300~600, 4" or over for Class 900, and 2"
or over for Class 1500.
With gearing, motor actuator or cylinder actuator,
They are also available for more difficult services.
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