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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