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Walworth
Walworth valves are designed and manufactured to meet the most stringent special requirements of various industries, including power generation, chemical and petrochemical, oil and gas, pulp and paper, mining, cryogenic and ship building applications.

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Sure-grip
Handwheel. Fluted design assures a firm grip, even with greasy gloves.
Yoke Nut.
Extra long thread engagement between yoke nut and stem provides
long thread life. Force feed lubricant application is included.
Gland Eye
Bolts Facilitate Packing Maintenance. For ease in repacking the
valve, gland eye bolts are mounted to swing aside.
Extra Clearances
Prevent Stem Scoring. Sufficient clearance between the gland, stem
and stuffing box prevents scoring stem even if the gland is inserted
unevenly.
Deep Stuffing
Boxes. Depth is more than adequate in all sizes and pressures to
assure tightness and maximum packing life. Packing sizes conform
to API requirements for refinery service. In all cases bonnet back
seats are furnished against which the stem head may be seated, thus
relieving the pressure on the packing to facilitate repacking. Stuffing
box packing is a reinforced, flexible graphite packing which remains
flexible and resilient at high temperature, which permits ease in
gland adjustment, and which contains a corrosion inhibitor for protection
of the stem.
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Walworth
Globe Valves Product Catalog
Walworth
Cast Steel Globe and Angle Valves have the same sturdy characteristics
as Walworth Gate Valves, such as sure-grip handwheels, long threaded
yokenuts, deep stuffing boxes, extra strong and tight bonnet joints,
excellent guiding of discs above the seat for minimum restriction
of flow, extra smooth seating surfaces for ease of tight seating,
best selection of trim materials for varied services, etc.
Walworth Cast
Steel Globe and Angle Valves can be supplied with V-port, parabolic,
or semi-parabolic discs for special flow characteristics.
Where globe
and angle valves in Class 300 and higher are regularly furnished
with spur or bevel gearing, it will be of the enclosed type mounted,
unless otherwise specified, with the handwheel shaft on the left
side of the valve when facing the end port that leads from above
the disc seat. When specified, these valves can be furnished without
gearing.
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Walworth
Check Valves Product Catalog
Walworth
Cast Steel Swing Check Valves have straight-through flow paths and
readily opening discs to provide very low friction loss.
POINTS TO REMEMBER
ABOUT CHECK VALVES
The function
of check valves is to stop reversal of flow automatically and promptly.
Usually it is desirable that they be supplemented by gate, globe,
or other valves for manual control of the fluid in the line.
Check valves
must be sized to meet the flow conditions. Oversizing of a check
valve will result in increased wear and improper operation.
Check valves
should be installed so that the force of gravity will assist in
closing and holding the disc or clapper on the seats.
Check valves
are one-way valves and should be installed so that the line pressure
is under the disc.
Swing check
valves should not be used in vertical pipe lines handling liquids
at high heads because severe water hammer may result from reversal
of flow.
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AIV, L.P. Houston
7140 W. Sam Houston Pkwy N. Suite 100
Houston, TX 77040
Toll Free: 1-800-447-4230
Local: (713) 462-4181
Fax: (713) 462-4187
E-mail: valves@aivinc.com
Map and Directions |
AIV, L.P. Chicago
2928 Malmo Dr.
Arlington Heights, IL 60005
Toll Free: 1-800-447-4230
Local: (847) 290-1020
Fax: (847) 290-1024
E-mail: valves@aivinc.com
2009 |
AIV, L.P. Pennsylvania
3344 Market St.
Suite D&E
Aston, PA 19014
Toll Free: 1-800-447-4230
Local: (610) 546-4585
Fax: (610) 497-2183
E-mail: valves@aivinc.com |
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Copyright © AIV, Inc. 2009 |
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