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Hawa Valves
Cast Steel Gate Valves have been designed
to meet the requirements of API 600 - ISO
104 34 / BS 1414 / API 603 / API 6D-ISO
14313 /ASME B 16.34 |
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Face to Face
and End to End dimensions conform to ASME
B 16.10 / ISO 5752 / BS 2080 / DIN |
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End flange
dimensions conform to ASME B 16.5 / ISO
7005-1 / API 605 / BS 3293 / DIN |
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Butt weld end dimensions conform to ASME B 16.25 |
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The stem nut
design allows for the removal of the
hand-wheel while keeping the Stem and Gate
in a fixed position. |
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Anti-frictional Ball bearings are provided
in higher sizes and classes. |
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The strength
of Stem to Gate connection is stronger
than the strength of the Stem at the root
of the operating thread |
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Outside
screw and yoke construction |
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All the
valves provided with backseat arrangement |
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Bi-directional shut-off |
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The gland is
of self aligning two piece type |
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Deep
stuffing box |
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Body ports
are streamlined, permitting unobstructed
flow, reduces turbulence, results in lower
pressure drop & lower erosion |
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The
Seat-rings are cylindrical bottom seated
type having ample cross section for
strength are provided with welded in and
threaded Seat-rings will be supplied on
request. In case of SS valves the
Seat-rings are integral to Body |
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The Body to
Bonnet joint is flat in ISO PN 20 / ASME
150# valves, a male and female joint is
used in PN 50 / 300# & PN 110 / 600# and
ring joint is used in higher classes |
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Valves meet
the requirements of fugitive emission
levels Shell category B as per MESC SPE
77/312 |
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