brochure / final

PETROLVALVES
valves
E X PA N D I N G G AT E S E R I E S
TRUE DOUBLE BLOCK
&
B L E E D VA LV E S
UNEQUALLED CAPABILIT Y
S P E C I A LT Y VA LV E S F O R C R I T I C A L S E R V I C E
W W W
.
P E T R O L V A L V E S
.
C O M
D O U B L E E X P A N D I N G G AT E VA LV E P R O D U C T S
D O U B L E
N O M I N A L
P R E S S U R E
E X P A N D I N G
S I Z E : 2”-56”
C L A S S E S
F E AT U R E S
:
ANSI 600-2500 API 2000-20,000
A N D
B E N E F I T S :
•
True Double Block and Bleed (one valve to replace two traditional block valves)
•
Metal to Metal Primary Sealing System (mechanically energized and not dependent on pressure)
•
Metal to Metal Secondary Sealing System (does not rely on any elastomeric or plastic seals)
•
Full Hard Facing on all 4 wedge Surfaces (a complete hard face is applied to both sides of each wedge segment)
•
Full Hard Faced Seat Rings (wide seal surface profile enhances the flexible seats and solids handling capability)
•
Hard Faced Material Options Include Tungsten and Chromium Carbide (HVOF Applied) and Stellite on Base Metal of Closure Member
•
Wedge Segments Forged as Standard (no castings for wedge parts)
•
Reduced Operating Torque During Cycling (there is minimal if any contact with the seat rings during cycling)
•
Full Bore Through Conduit Pipe Line Profile (all pig types pass smoothly without risk to pig or valve)
•
Greatly reduces footprint when space is at premium (compact packages improve overall design/functionality)
•
Weight savings when utilized as singular Double Block and Bleed Valve (reduces installation cost)
•
Special sized compact hydraulic/pneumatic actuators available (PetrolValves unique space saving design)
T Y P I C A L A P P L I C AT I O N :
Double Block and Bleed Service
Suitable for Sub Sea Applications
Oil and Gas Production Isolation
Suitable for Onshore Applications
Scapers and Traps
Separator Isolation/Slurry Discharge
Abrasive Media/Suspended Solids
Ideal Critical and Primary Isolation Valve
Upstream Gas Compressor Isolation
Suitable for Offshore Applications
Oil and Gas Transportation Isolation
Pig Launchers and Receivers
Emergency Shut Down Valve
D O U B L E
E X P A N D I N G
G A T E
V A L V
P R I N C I PA L O F O P E R AT I O N
CLOSED POSITION
>
RUNNING POSITION
OPEN POSITION
Through conduit pipeline gate valve
offering the highest possible longterm
seat sealing integrity & piggability
>
Wedge gate closure member segments
expand to seal from both directions
when the valve is Open or Closed
>
Provides a true double block and bleed
isolation capability within one single valve
H O W
D O U B L E
G AT E
VA LV E S
E X P A N D I N G
O P E R AT E
THE DOUBLE EXPANDING GATE VALVES OPERATING PRINCIPLE:
The stem drives only the “female “wedge segment at all times via a precision “T” head dive connection, the male segment is permanently attached to the female
segment by the centralizer mechanism which ensures the wedge segments are fully contracted during cycling while permitting the female to develop the
expanding capability. The male and female wedge segments are also mechanically aligned by the centralizing components. The closure member segments expand
in the open and closed positions via the open/closed slopes between each wedge segment, this enables the valves to seal in both directions. While in the open
or closed position, the valve cavity is also isolated.
GATE IN THE FULLY CLOSED POSITION
The “male” wedge segments inertia is first to stop once contact is made with the body’s integral stop. The “Female” wedge segment continues to run along the
wedge close slope and a mechanically dependent expansion of the closure member results, simultaneously sealing upstream and downstream.
GATE IN FULLY OPEN POSITION
A full expansion occurs at the full open position and the backseat is energized. Consequently the body cavity is isolated from both the upstream and downstream
side. The primary seat sealing surfaces are protected by the expansion that occurs in the full open position. This factor makes this valve ideal choice for pigging applications where high integrity isolation on a long term basis is a must.
GATE IN RUNNING STROKE
From the fully closed position or the fully open position, once the closure member is mobilized by the cycling valve, the centralizing mechanism pulls the wedge
segments together to develop a clearance between the primary seal faces in order to minimize the potential for wear on these critical surfaces at all times during every cycle. This thereby extends the life expectancy of primary seals.
E
P R O D U C T S
EXPANDING SERIES GA
P R O D U C T D ATA S H E E T
CLOSE WEDGE
SLOPE
4 COMPLETELY
HARD FACED
SEALING
SURFACES
CENTRALIZER
RETAINING POSTS
CENTRALIZED
MECHANISM
CENTRALIZER
GUIDE
OPEN WEDGE
SLOPE
FEMALE WEDGE
SEGMENT
MALE WEDGE
SEGMENT
DESIGN
DOUBLE EXPAND
INDUSTRY STANDARD
API-6D/ANSI B16.34/API-
BONNET CONSTRUCTION
Bolted Bonnet
CLOSURE MEMBER (WEDGE) T YPE
Double Expanded
SEAT CONSTRUCTION
Unique Patented Flexible
STEM DESIGN
IS&Y Non Rising Stem or
END CONNECTION
Flanged Ends (RF or RTJ)
BORE
Full Bore (per API-6L) (Th
FACE TO FACE DIMENSIONS
API-6D/API-6A/Special C
FEATURES
YES
FIRE SAFE
•
Per API-
•
•
•
Leak Tes
NACE MR -01-75
BI-DIRECTIONAL
METAL TO METAL SEALING (1)
•
SOFT SEAT
RENEWABLE SEATS
CAVIT Y RELIEF
VENT CONNECTION
DRAIN CONNECTION
STEM EXTENSION
LOCKING
NO
•
•
•
•
NOTES
Not Appl
Standard
Optional
Plug Sta
Plug Sta
•
•
Available
Available
(1) PetrolValves Single and Double Expanding Series Gate Valve (DEGV) offers bubble tight seal simulta
double block and bleed system and can be employed in lieu of two traditional block valves. SEGV is lea
(2) For a non-through conduit feature per API-600, use Single expanding Gate Valve (SEGV) design preferr
(3) Pressure vessel materials utilized; Carbon Steel, Low Temperature Carbon Steels, Stainless Steels Dup
(4) SEGV Closure Member Segments in Cast A216 as Standard other options available.
(5) DEGV Closure Member Segments on Forged A105 as Standard, other options available.
(6) Other sizes and Special Ratings are also available upon request.
Double Block & Bleed: Two barriers with a bleed between the barriers. A typica
P E T R O LVA LV E S
S E G M E N T S
C L O S U R E
D E TA I L E D
P H O T O G R A P H
I N
M E M B E R
by some valve manufacturers. This is not in accordance with acceptable philosoph
T H E
A B O V E
ble block and bleed valve only if sealing forces are independent of line pressure an
valve (typically this would be an expanding gate valve with an integral cavity vent d
You will note a solid forged female wedge segment lapped and polished to
states that the valve must be lockable in the closed position to avoid malfunction.
provide the cavity sealing function. The engineers’ reflection on the close
slope demonstrates our attention to detail. PetrolValves does not employ cast
wedge segments and both wedge slopes open and closed are completely
The use of the expanding valve replacing two block valves is generally accepte
carbide hard faced using HVOF technology. Petrolvalves wedge segments
standard no permission is required from authorities. The standard can be found a
have no integral stop built on which can influence negatively the valves
WWW.NTS.NORSOK.COM Go to - Standards>P-Process>p-
sealing integrity. All stops are integral to the body and bonnet.
Wedge Gates Closure Member segments expand to seal from both directions whe
A N D I N G
G A T E
V A L V E
P R O D U C T S
VA LV E P O S I T I O N
CLOSED
OPEN
•
Wedge gate closure member segments expand to seal from both directions when the
valve is cycled to closed.
•
Provides a true double block and bleed isolation capability within one singular valve.
H O W
G AT E
S I N G L E
E X P A N D I N G
VA LV E S
O P E R AT E
The Stem drives only the female wedge segment at all times via a typical T Head drive mechanism,
the male segment is permanently attached to the female segment by two casehardened
shoulder bolts acting as guide pins which allow the male segment to float up or down against the
female to develop the expanding capability. The male and female wedge segments are also
mechanically retained at the lower toe end of the closure member assembly and this acts as a limit
stop controlling the centralizing mechanism when the closure member expands, the same
Body stop
TRUE DOUBLE
BLOCK SEAL
WHEN VALVE
IS CLOSED
mechanical preload is discharged as soon as the valve starts its cycle from closed to open, thereby
FULL BORE FLOW
CHARACTERISTICS
WHEN VALVE IS
OPEN
dramatically reducing friction between the primary sealing surfaces during each and every cycle.
POS.
PART NAME
H O W
S I N G L E
1
BODY
G AT E
2
SEAT RING
3A
GATE
3B
GATE
4
STEM
•
The stem pushes downward on the Female wedge segment, the Male simultaneously follows.
5
BONNET
•
The Male wedge segments’ inertia is first to stop once contact is made with the body’s integral stop
6
BONNET GASKET
7
BONNET STUD
10
BONNET STUD NUR
15
GLAND
16
GLAND PLATE
17
PACKING
19
SUPPORT
GATE IN FULLY OPEN POSITION
52
DRAIN FLANGE
•
58
VENT DEVICE
62
GLAND BOLT
63
GLAND BOLT NUT
138
LEVER
141
SLIDING
143
GUIDE
segments and thereby contracts them to develop a clearance between the primary seal faces in order
144
GUIDE
to minimize the potential for wear on these critical surfaces as the valve cycles.
474
PIN
VA LV E S
E X P A N D I N G
O P E R AT E
GATE IN FULLY CLOSED POSITION
provided in trim material and located on the bottom of the body.
•
The Female wedge segment continues to travel along the wedge slope and an expansion of the
closure member segments occurs and results in a simultaneous upstream and downstream seal
seating.
No expansion occurs at the full open position. The stem backseat seal can be energized if needed.
GATE IN RUNNING STROKE
•
From the closed position, as soon as the stem “T” head begins to lift the female wedge segment, the
mechanical preload stored in the centralizing mechanism discharges to centralize the wedge
T E VA LV E S P R O D U C T S
S I N G L E
E X P A
C L O S U R E M E M B E R A S S E M B LY
NG GATE VALVE
SINGLE EXPANDING GATE VALVE
A/API-17D
API-600/ANSI B16.34
FEMALE WEDGE
SEGMENT
MALE WEDGE
SEGMENT
Bolted Bonnet
Single Expanded
eats
Renewable Seats
S&Y (Rising Stem)
OS&Y Rising Stem
Butt Weld or HUB
Flanged Ends (RF or RTJ), Butt Weld or HUB
ough Conduit) (2)
Full Bore per API-600 (2)
tom Length
Per ANSI B16.10 (ANSI B16.5 and B16.25)
YES
A
ng Per API-6D (1)
able
onfigurations
ard/Valve Optional
ard/Valve Optional
on Request
on Request
NO
•
•
•
•
•
•
•
•
•
•
•
NOTES
GUIDE PIN
A&B PORT
PRIMARY SEALING
SURFACES ARE
HARD FACED
AUTO INTERNAL
CENTRALIZING
MECHANISM
(NOT DETAILED)
Per API-6FA
Leak Testing Per API-598
Available in Requested
STELLITE,
TUNGSTEN OR
CHROMIUM
CARBIDE HARD
FACE OPTIONS
WEDGE SLOPES
WITH HARD
FACING
BODY GUIDE
M/F MECHANICAL
RETENTION AT TOE
Standard
Optional Configurations
•
•
•
•
Available on Request
Available on Request
Available on Request
Available on Request
ously and independently in both the upstream and downstream seat. The valve this creates is a true
ested per API 598 and the DEGV ios leak tested per API-6D (other leak tests are available upon request).
alternative.
or Super Duplex materials of construction.
arrangement is two defined in API and ISO DIS-14313, which has been adopted
as defined in the Norsok standard. Where a single valve is acceptable as a douwhere a bleed connection is provided between the two sealing faces within one
vice installed onto the valve body or bonnet vent/drain port). Furthermore Norsok
Optional soft sealing
materials available;
• Teflon
• Nylon
• Peek
• Delrin
standard in Norway and described in the Norsok standard. As it is a Norsok
he following web site address:
01,Process Design, Rv.4, Oct 1999>Definitions>Double Block and Bleed
the valve is cycled to closed.
S I N G L E E X P A N D I N G G AT E VA LV E P R O D U C T S
S I N G L E
N O M I N A L
P R E S S U R E
E X P A N D I N G
S I Z E : 2”-36” (custom sizes available on request)
C L A S S E S
F E AT U R E S
:
ANSI150-600 (Custom Pressure Classes Available on Request)
A N D
B E N E F I T S
•
True Double Block and Bleed (one valve to replace two traditional block valves)
•
Metal to Metal Primary Sealing System (mechanically energized and not dependent on pressure)
•
Metal to Metal Secondary Sealing System (does not rely on any elastomeric or plastic seals)
•
Full Hard Facing on both wedge sealing surfaces (precision integral hard faced pads between each wedge segment)
•
Full Hard Faced Seat Sealing Surface (renewable seats for easy maintenance)
•
Hard Face Material Options include Stellite, Tungsten and Chromium Carbide (HVOF Applied)
•
Soft Sealing Options Available (Teflon, Nylon, Nylon PA12, Peek, Devlon and others also available)
•
Reduced Operating Torque during cycling (there is minimal if any contact with the seat rings during stroking)
•
Full Bore Flow Characteristics (low friction loss through valve)
•
Greatly reduces footprint when space is at a premium (compact packages improve overall design functionality)
•
Weight savings when utilized singular double block and bleed valve (greatly reduces installation cost)
T Y P I C A L
A P P L I C AT I O N S
Double Block and Bleed Service
Suitable or Onshore Application
Abrasive Media/Suspended Solids
Suitable for Offshore Applications
Oil and Gas Transportation Isolation
Ideal Critical and Primary Isolation Valve
Oil and Gas Production Isolation
Pump and Exchanges Isolation Solution
Separators Waste Discharge Isolation
Metering Skids