Jordan MK688 specs

Jordan MK688 specs
Piloted Soft Seat Regulator (1" - 2")
The Mark 688 Series piloted soft seat regulator
was designed specifically to provide accurate pressure control on very low pressure tank blanketing
systems. The pilot operated Mark 688 responds to
very small changes in tank pressure by throttling
open or closed to maintain the desired pressure
set point.
Accurate regulation down to 1" wc
•
ANSI Class VI Shutoff
•
Five available spring ranges
•
200 psi maximum inlet pressure
•
High flows: Cv 1" - 17; 1-1/2" - 30; 2" - 45
•
Sizes: 1" (DN25) through 2" (DN50)
Service: Tank blanketing only
End Connections
• ANSI Flanges — 150#, 300#
Shutoff: ANSI Class VI
Body Materials
• Carbon Steel — ASME SA216 WCB
• Stainless Steel — ASME SA351 CF8M
Trim Material: 316SS (Standard on all valves)
Main Valve Seat Material: 316SS/Viton
Actuator Materials
• Carbon Steel for WCB bodies
• Electroless Nickel Plated Carbon Steel for CF8M
bodies
Available Spring Ranges
• MK608 Low Pressure Pilot (psi): 1-5 wc,
4-10 wc, 5-30 wc, 0.5-1.75 psi, 1.0-3.5 psi
Minimum & Maximum Pressure Drop: 25 psi
minimum (1,7 bar); 200 psi maximum (13,8 bar)
Pressure Temperature Ratings (Body):
Maximum inlet 200 psi @ 100°F
Maximum Outlet Casing Pressure: 185 psi
(12,8 bar)
Flow Coefficients:
• 1": 17 Cv
• 1-1/2": 25 Cv
• 2": 45 Cv
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 688 Piloted Soft Seated Regulators
Specifications
Diaphragm Material: Buna-N
Pressure Regulators
Mark 688 Series
MK688/0313/5K/AB
Mark 688 Series Piloted Soft Seated Regulator
Dimensions
3/4" FNPT
Sensing Line
Connection
22.56" 573mm
17.92"
455mm
8.17"
207mm
8.45" 215mm
A
6.25"
159mm
B
FLOW
9.88" 251mm
A
Valve Size
1"
1-1/2"
2"
Ends
150
150/300
150/300
View from Outlet Side
A
9.25" (235mm)
8.75"/9.25" (222mm/235mm)
10.00"/10.50" (254mm/267mm)
Ordering Schematic
Model No
Size
Body Mat'l
688
Model
Standard
100
150
200
Size
1"
1-1/2"
2"
CS
S6
Body Material
Carbon Steel (WCB)
Stainless Steel (CF8M)
1&2
I5
I3
ZZ
End Connections
150# FE
300# FE
Non-Standard
1
2
3
4
5
6
3&4
Trim
Seal Materials / Pressure Drop Ranges
V1
316SS / Viton / 25-50 psi drop
V2
316SS / Viton/ 50 - 200 psi drop
ZZ
Non-Standard
5&6
01
02
03
04
05
ZZ
Range
608P Pilot
1 - 5 wc
4 - 10 wc
5 - 30 wc
0.5 - 1.75 psi
1.0 - 3.5 psi
Non-Standard
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