Mark 68HP Series High Pressure Regulating Valves Pressure Regulat

Mark 68HP Series High Pressure Regulating Valves Pressure Regulat
Pressure Regulators
Mark 68HP Series
High Pressure Regulating Valves
Description
The Mark 68HP is designed primarily for high pressure
steam service as commonly found in power plants, refineries, pulp & paper mills, and other high pressure
process applications. Since high pressure superheated steam is routinely used for power generation (turbines), a pressure regulator capable of withstanding
these pressures is needed for the distribution of lower
pressure steam for individual process requirements.
Common uses for the Mark 68HP include:
•
Operation
The downward force of the spring holds the plug normally open. As the downstream pressure increases
due to a decrease in flow demand, the diaphragm
rises to close the valve. The controlled downstream
pressure set point can be increased by rotating the
adjusting screw clockwise or decreased by turning the
adjusting screw counter-clockwise. A combination of
springs is available so that all control settings can be
accommodated with minimal droop.
Specifications
Sizes: 1/2" (DN15); 3/4" (DN20); 1" (DN25)
End Connections
•
Threaded — NPT, FSW
•
Flanged
Materials
•
Body: WCB Carbon Steel or CF8M Stainless
Steel
•
Seat: Stellite
•
Trim: Stainless Steel
•
Spring Housing: Steel
•
Diaphragm: Hastelloy C
•
Gaskets: Grafoil
Service: steam, gas and non-cavitating liquid (for
pressures above 900 psi (62 bar) we recommend the
LowFlow Mark 6800HP)
Shutoff: ANSI Class III
Features
•
•
•
•
In-line maintainable — provides easy access to
the seat for reduced downtime. Ideal for services
where the valve is welded in line.
Self-aligning plug — guided upper diaphragm
plate, lower diaphragm plate, and stem ensures
that the plug stays centered in the seat.
Stellite seat insert, 17-4 plug — for long service
life under high pressure conditions.
Continuous un-perforated diaphragm — stands
up to the rigorous demands of high pressure services for long diaphragm life.
Body Pressure Rating
•
WCB: 900 psig @ -20°F to +650°F (62 bar @
-29°C to +343°C)
•
CF8M: 900 psig @ -20°F to +100°F; 640 psig
@ 650°F (62 bar @ -29°C to 38°C, 44 bar @
343°C)
Maximum Pressure Drop: 800 psig (55 bar)
Cv (Kv) Rating
•
1/2" (DN15): 2.3 or 1.4 (2,0 or 1,2)
•
3/4" & 1" (DN20 & DN25): 5.0, 2.3 or 1.8 (4,3,
2,0 or 1,6)
Jordan Valve, a division of Richards Industries
3170 Wasson Road • Cincinnati, OH 45209
513.533.5600 • 800.543.7311 • 513.871.0105 (f)
[email protected] • www.jordanvalve.com
Mark 68HP High Pressure Regulating Valves
•
Pressure reduction of turbine extraction steam to
desuperheaters.
Steam injection to turbine bearing seals to eliminate pressure differential across this area.
Primary pressure reduction from the main steam
header to lower pressure points of use.
•
MK68HP/0116
Mark 68HP High Pressure Regulator
Dimensions
Ordering Schematic
1
–
2
1
2
A
B
C
D
Weight
(lbs.)
1/2"
4.87
11.50
2.56
5.00
11
3/4" & 1
6.81
14.50
2.62
6.81
20
Size
•
5
1/2" (DN15)
075
3/4" (DN20)
100
1" (DN25)
CS
Carbon Steel (WCB)
SS
Stainless Steel (CF8M)
End Connections
NPT
SW
FSW
F5
150# FE
F3
300# FE
ZZ
Non-Standard
B
C
D
Weight
(kg)
15
124
292
65
127
5,0
C1
Cv 1.4
20 & 25
173
368
67
173
9,1
C2
Cv 1.8
C3
Cv 2.3
C4
Cv 5.0
ZZ
Non-Standard
•
Size
1/2"
3/4" & 1"
•
5
Flanged Ends
Dimensions (inches)
ANSI
Flange
A
B
C
D
Weight
(lbs.)
150#
9.50
11.50
2.56
5.00
13
300#
9.75
11.50
2.56
5.00
16
150#
11.31
14.50
2.62
6.81
24
300#
11.56
14.50
2.62
6.81
27
Size
15
20 & 25
Dimensions (inches)
Trim
6
Flanged Ends
7
Body Material
A
Size (DN)
6
High Pressure
PT
Threaded Ends, DIN
Dimensions (mm)
4
050
4
Dimensions (inches)
/
Size
3
Threaded Ends
3
Model
68HP
•
–
Range PSI (BAR)
R1
100 - 300 (6,9 - 20,7) (1/2")
R2
200 - 450 (13,8 - 31,0) (1/2")
R3
100 - 350 (6,9 - 24,1) (3/4" - 1")
R4
300 - 600 (20,7 - 41,4) (1/2 - 1")
ZZ
Non-Standard
ANSI
Flange
A
B
C
D
Weight
(lbs.)
10/16
241
292
65
127
5,9
25/40
248
292
65
127
7,3
A1
Actuator
10/16
287
368
67
173
10,9
ZZ
Non-Standard
25/40
294
368
67
173
12,2
7
Actuator
Jordan Valve, a division of Richards Industries
3170 Wasson Road • Cincinnati, OH 45209
513.533.5600 • 800.543.7311 • 513.871.0105 (f)
[email protected] • www.jordanvalve.com
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