Bonney Forge Globe Valves -Valve Components
Forged
steel, outside screw and yoke (OS&Y), rotating rising
stem, rising handwheel. Full or conventional port. Bolted
or welded bonnet joint. T-Pattern or Y-Pattern. Integral
backseat. Integral body seat.
1.
BODY The
body is forged steel and designed to the basic dimensional
requirements of the applicable specifications such as
API602 and ASME 816.34. The body is available in both
the full or conventional port design. It is also available
in either T-pattern or Y-pattern configuration.
2. BONNET The bonnet is
forged steel, has an integral backseat and incorporates
the stuffing box, which has dimensions per the applicable
specifications such as API 602.
3. BODY-BONNET JOINT
Two different bonnet joint designs are available. These
are either the bolted bonnet or the threaded and seal
welded type.
4. GASKET The bolted bonnet
joint design valve uses a contained, controlled compression,
spiral wound type gasket.
5. BONNET BOLTING The
bonnet bolting is manufactured of alloy steel in accordance
with the requirements of the applicable specifications
such as API 602 and ASME 816.34.
6. SEAT The body seat is
an integral weld overlay and is part of the valve trim.
7. DISC The disc is forged
steel and is part of the valve trim. The disc seating
surface is of the tapered or plug type design. The disc
is attached to the stem using a loose or swivel disc
arrangement.
8. STEM The stem is forged steel
and part of the valve trim. It contains an integral
back seat shoulder, which mates with the integral backseat
of the bonnet. The stem is designed to the basic dimensional
requirements of the applicable specifications such as
API 602.
9. GLAND AND FLANGE The
gland, gland flange assembly utilizes a separate, two
piece design. This self aligning design allows the flange
to be unevenly tightened while the gland maintains its
parallel alignment with the stem and stuffing box.
10. GLAND BOLTS AND NUTS
The steel/stainless steel gland bolt and nut assembly
is a stud, double nut arrangement. This design allows
complete removal from the valve when service is required.
The use of industry standard thread full length studs
and nuts also allows easy replacement should these items
be lost or in need of replacement.
11. YOKE SLEEVE The yoke
sleeve is of forged stainless steel material having
a high melting point and is resistant to wear and corrosion.
12. HANDWHEEL The handwheel
is forged carbon steel of an open spoke design. This
robust construction along with appropriate sizing allows
for ease of operation.
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