Cameron Pow-R-Seal WKM 58G Panduan Pemasangan, Pengoperasian, dan Pemeliharaan - Halaman 7

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This manual covers all bolted bonnet Pow-R-Seal
Gate Valves. Drawings shown are typical. The design of
specific valves may vary slightly from the drawings.
The Pow-R-Seal Gate Valve is a premium through conduit
parallel expanding gate valve. The parallel expanding gate
design provides a tight mechanical seal which is normally
unaffected by pressure variations. The full-bore design
has the same pressure drop as an equivalent length of
pipe and allows passage of all types of scrapers (pigs).
The Pow-R-Seal Gate Valve is designed with positive stops
that do not need adjustment. The valve can be repaired
while in line (pressure removed and valved drained).
The stem is sealed either by Chevron packing or
spring-loaded lip seals. In an emergency, plastic packing
can be injected into the packing box to affect a tempo-
rary seal while the valve is under pressure.

NAMEPLATE INFORMATION

ITEM
STAMP
1.
Nominal Valve Size
2.
Maximum Cold Working Pressure (psig)
3.
*Serial Number
4.
API Class Designation
5.
Maximum Temperature in °F
6.
*Bill of Material Number
7.
Body Material Designation
8.
Stem Material Designation
9.
Gate Material Designation
10.
Seat Material Designation
11.
(Maximum Operating Pressure at 250°F - if Applicable)
12.
(API Monogram - if Applicable)
13.
Model Designation
14.
(Marking for Non-Standard End-to-End -
if Applicable)
15.
(License Number - if Applicable)
16.
Date of Manufacture
17.
(Impact Test Temperature - if Applicable)
( ) Descriptions in parenthesis may be left blank in some cases.
* Most important data for obtaining correct replacement parts.
Nameplate may vary.
Installation, Operation and Maintenance Manual
E N G I N E E R E D & P R O C E S S V A L V E S
Outside packing gland stem seals are offered for high
temperatures up to 1000°F (588°C).
Pow-R-Seal Gate Valves do not depend on lubricant
for a seal in normal operation. However, lubricant and
sealants can be injected to promote smooth operation.
Seat sealant can also be injected to affect a seal in an
emergency should the seats become damaged by
foreign matter.
Seats with all metal seats are available in special trims.
Because of the split gate design, it is possible for excess
body pressure to develop in the valve body cavity. A body
cavity thermal relief system is provided to relieve this
excess body pressure.
Pow-R-Seal Gate Valves are available in sizes, pressure
classes, materials and coatings that meet industry require-
ments. Valves are available with lubrication/packing/drain
extensions and stem/yoke tube extensions.
11
1
6
3
4
5
Figure 5 - Typical Power-R-Seal Nameplate
7
12
16
13
7
8
15
9
10
17
02/2011 / IOM-WKM-GATE-PRS-01