Bonney Forge Gate Valves -Valve Components
Forged
steel, outside screw and yoke (OS&Y), rising stem,
non-rising handwheel. Full or conventional port. Bolted
or welded bonnet joint. Integral backseat.
1.
BODY The body is forged steel
and designed to the basic dimensional requirements of
the applicable specifications such as API 602 and ASME
B16.34. The body is available in both the full or conventional
port design.
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 B16.34.
6. SEAT RINGS The seat rings
are steel and makeup part of the valve trim. They are
pressed into the valve body and wedged into place, forming
a seal with the body. The seating surfaces are ground
and lapped.
7. WEDGE The wedge, which
is solid design, is forged or investment cast steel
and is part of the valve trim. The seating surfaces
are ground and lapped.
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 it's
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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