Mark 6127 Series Pressure Reducing Valves Pressure Regulat

Mark 6127 Series Pressure Reducing Valves Pressure Regulat
Pressure Regulators
Mark 6127 Series
Pressure Reducing Valves
The primary function of the Mark 6127 is
to reduce a greater upstream pressure to
a lesser, more manageable downstream
pressure, operating without regard to
either upstream supply or downstream
demand.
Valve Features
Operation
Pressure Reducing
The normally open, spring loaded pilot, sensing
downstream pressure, responds to changes in
pressure and causes the main valve to do the
same. The net result is a constant modulating
action of the pilot and main valve to hold the
downstream pressure constant. The pilot
system is equipped with an opening speed
control that fine tunes the valve response to the
system variables.
•
Operates automatically off line pressure.
•
Outlet pressure is accurate over wide range
of flow.
•
Pilot-operated main valve is not subject to
pressure fall off characteristic of direct
acting PRV's.
•
Outlet pressure is adjustable over complete
range of control spring (see pilot features).
•
•
Heavy-duty, nylon-reinforced diaphragm.
Rectangular-shaped, soft seat seal provides
drip tight Class VI closure.
•
Diaphragm assembly Guided top and
bottom.
•
Throttling seat retainer for flow and pressure
stability.
•
Easily maintained without removal from the
line.
•
Replaceable seat ring.
•
Alignment pins assure proper reassembly
after maintenance.
•
Valves are factory tested.
•
Valves are serial numbered and registered
to facilitate replacement parts and factory
support.
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 6127 Series
•
Mark 6127 Series Pressure Reducing Valve
Specifications
Sizes:
Materials:
Globe Flanged: 1.25"- 24" (32 mm - 600 mm)
Angle Flanged: 1.25" - 16" (32 mm - 400 mm)
Glove/ Angle Threaded: 1.25" - 3" (32 mm - 80 mm)
Globe Angle Grooved: 1.5" - 4" (32 mm - 100 mm)
Body/Bonnet: Ductile Iron (epoxy coated), Carbon steel
(epoxy coated), Stainless Steel, B61 bronze,
Ni-Al-Bronze, Duplex Stainless Steel, Monel
End Connections:
• Flanged
• Threaded
• Grooved
Seat Ring: Bronze B61, Stainless Steel,
Optional: Ni-Al-Bronze, Duplex Stainless Steel, Monel
Stem: Stainless Steel, Monel, Optional: Duplex Stainless
Steel
Spring: Stainless Steel. Optional: Inconel
Diaphragm: Buna-N Nylon Reinforced, Viton, EPDM
Temperature Range:
(Valve Elastomers)
Buna-N: -20°F to 180°F (-29°C to 82°C)
Viton: 20°F to 230°F (7°C to 110°C)
Fluorisilicon: -40°F to 150°F (-40°C to 66°C)
EPDM: 0°F to 230°F (-18°C to 110°C)
Seat Disc: Buna-N, Viton, EPDM
Spring Ranges: (inlet setting)
Tubing & Fittings: Copper/brass, Stainless Steel,
Optional: Monel
5-30 psi (0,34 - 2,07 bar)
20-80 psi (1,38 - 5,52 bar)
65-180 psi (4,48 - 12,41 bar)
100-300 psi (6,89 - 20,68 bar)
Pilot: Bronze, Stainless Steel (Other pilot system
components: Bronze/Brass, All Stainless Steel) Optional:
Ni-Al-Bronze, Duplex Stainless Steel, Monel
Valve Size
Globe Valves Cv Range
Angle Valves Cv Range
Flow for 25ft/ sec GPM
1-1/4" — 1-1/2"
2.3 - 21
3.7 - 33
115
2"
4.7 - 42
6.0 - 54
260
2-1/2"
6.8 - 61
7.8 - 70
370
3”
9.6 - 86
14 - 126
570
4”
20 - 180
27 - 243
1,000
6”
45 - 405
65- 585
2,250
8”
76 - 684
100 - 900
3, 900
10”
110 - 990
150 - 1350
6,150
12”
170 - 1530
250 - 2250
8,700
14”
215 - 1940
------
10,500
16”
285 - 2570
300 - 2700
13,800
24”
690 - 6210
------
31,300
-2-
Mark 6127 Series Pressure Reducing Valve
Dimensions
U.S. Dimensions- Inches
Dim.
End Conn.
1 1/4 – 1 1/2
2
2 1/2
3
4
6
8
10
12
14
16
24
A
Threaded
8 3/4
9 7/8
10 1/2
13
–
–
–
–
–
–
–
–
Grooved
8 3/4
9 7/8
10 1/2
13
15 1/4
20
–
–
–
–
–
–
150# Flg
8 1/2
9 3/8
10 1/2
12
15
17 3/4
25 3/8
29 3/4
34
39
40 3/8
62
B
300# Flg
8 3/4
9 7/8
11 1/8
12 3/4
15 5/8
18 5/8
26 3/8
31 1/8
35 1/2
40 1/2
42
63 3/4
Threaded
1 7/16
1 11/16
1 7/8
2 1/4
–
–
–
–
–
–
–
–
Grooved
1*
1 3/16
1 7/16
1 3/4
2 1/4
3 5/16
–
–
–
–
–
–
150# Flg
2 5/16- 2 1/2
3
3 1/2
3 3/4
4 1/2
5 1/2
6 3/4
8
9 1/2
10 5/8
11 3/4
16
300# Flg
2 5/8- 3 1/16
3 1/4
3 3/4
4 1/8
5
6 1/4
7 1/2
8 3/4
10 1/4
11 1/2
12 3/4
18
Threaded
4 3/8
4 3/4
6
6 1/2
–
–
–
–
–
–
–
–
Grooved
4 3/8*
4 3/4
6
6 1/2
7 5/8
–
–
–
–
–
–
–
150# Flg
4 1/4
4 3/4
6
6
7 1/2
10
12 11/16
14 7/8
17
–
20 13/16
–
300# Flg
4 3/8
5
6 3/8
6 3/8
7 13/16
10 1/2
13 3/16
15 9/16
17 3/4
–
21 5/8
–
Threaded
3 1/8
3 7/8
4
4 1/2
–
–
–
–
–
–
–
–
Grooved
3 1/8*
3 7/8
4
4 1/2
5 5/8
–
–
–
–
–
–
–
150# Flg
3
3 7/8
4
4
5 1/2
6
8
11 3/8
11
–
15 11/16
–
300# Flg
3 1/6
4 1/8
4 3/8
4 3/8
5 13/16
6 1/2
8 1/2
12 1/16
11 3/4
–
16 1/2
–
E
ALL
6
7
7
6 1/2
8
10
11 7/8
15 3/8
17
18
19
27
C
Angle
D
Angle
F
ALL
3 7/8
3 7/8
3 7/8
3 7/8
3 7/8
3 7/8
6 3/8
6 3/8
6 3/8
6 3/8
6 3/8
8
G
ALL
6
7 11/16
8 3/4
8 3/4
11 3/4
14
21
24 1/2
28
31 1/4
34 1/2
52
H
ALL
10
11
11
11
12
13
14
17
18
20
20
28 1/2
*Grooved end not available in 1 1/4"
Metric Dimensions- M.M
Dim.
End Conn.
DN32DN40
DN50
DN65
DN80
A
Threaded
222
251
267
330
Grooved
222
251
267
330
150# Flg
216
238
267
305
300# Flg
222
251
283
324
Threaded
37
43
48
57
Grooved
25*
30
37
44
150# Flg
59 - 64
76
89
95
B
DN100
DN150
DN200
DN250
DN300
DN350
DN400
DN600
–
–
–
–
–
–
–
–
387
508
–
–
–
–
–
–
381
451
645
756
864
991
1026
1575
397
473
670
791
902
1029
1067
1619
–
–
–
–
–
–
–
–
57
84
–
–
–
–
–
–
114
140
171
203
241
270
298
406
300# Flg
67 - 78
83
95
105
127
159
191
222
260
292
324
457
Threaded
111
121
152
165
–
–
–
–
–
–
–
–
Grooved
111*
121
152
165
194
–
–
–
–
–
–
–
150# Flg
108
121
152
152
191
254
322
378
432
–
529
–
300# Flg
67 -78
83
95
105
127
159
191
222
260
292
324
457
Threaded
79
98
102
114
–
–
–
–
–
–
–
–
Grooved
79*
98
102
114
143
–
–
–
–
–
–
–
150# Flg
76
98
102
102
140
152
203
289
279
–
398
–
300# Flg
79
105
111
111
148
165
216
306
298
–
419
–
E
ALL
152
152
178
165
203
254
302
391
432
457
483
686
F
ALL
98
98
98
98
98
98
162
162
162
162
162
203
G
ALL
152
171
195
222
298
356
533
622
711
794
876
1321
H
ALL
254
279
279
279
305
330
356
432
457
508
508
724
C
Angle
D
Angle
*Grooved end not available DN32
-3-
Mark 6127 Series Pressure Reducing Valve
Schematics
The Mark 6127 consists of the following components,
arranged as shown on the schematic diagram:
1. Main Valve: A hydraulically-operated, diaphragm-
actuated, globe or angle valve which closes with an elastomer-on-metal-seal.
4.
2. Pressure Relief Pilot: A two-way, normally-open pilot valve which senses downstream pressure under its diaphragm and balances it against an adjustable spring load. An increase in downstream pressure tends to make the pilot close.
Flow Control Valve: A needle-type valve which
provides adjustable, restricted flow in one direction and free flow in the opposite direction. On the Mark 6127, the flow control valve is connected as an opening speed control.
5. Y-Strainer (standard on water service valves): The strainer protects the pilot system from solid contaminants in the line fluid.
3. Ejector: A simple “tee” fitting with a fixed orifice in its upstream port. It provides the proper pressure to the diaphragm chamber of the main valve de
pending on the position of the pressure reducing pilot.
6A/B. Two Ball Valves (standard on water service
valves, optional on fuel service valves): Useful for isolating the pilot system for maintenance or trouble shooting.
-4-
Mark 6127 Series Pressure Reducing Valve
Pilot
• Accurate sensing of outlet pressure
• Simple, single adjustment
All parts replaceable while mounted on valve
• Rubber-to-metal seat for positive shut-off
• Large area diaphragm for quick, precise throttling
• Visual indication of diaphragm condition
• Bronze and stainless steel construction
1340
2420
Pilot Materials
Bronze B-62
Stainless Steel ASTM A743/CF8M
Spring Ranges
5-30, 20-80, 65-180, 100-300 psi
Model 1340/ 2420
Pressure Reducing Pilot
1.
2.
3.
4.
5.
6.
7.
Adjusting Screw Cover
Adjusting Screw
Spring
Diaphragm
Pressure Sense
Pilot Outlet
Pilot Inlet
Pilot Materials
Stainless Steel ASTM A743/CF8M
Spring Ranges
200-750 psi
The Model 1340 & 2420 Pressure Reducing Pilot controls the amount of pressure in the upper chamber of
the main valve (hence, the degree of opening or closing
of the main valve). The downstream system pressure is
sensed under the pilot to close, increasing the amount
of pressure in the upper chamber of the main valve
causing it to close a proportionate amount to maintain
a constant discharge pressure. As the downstream
pressure decreases, the pilot begins to open, allowing
the pressure in the upper chamber of the main valve to
decrease, causing the main valve to open. This is a constant modulating action compensating for any change in
downstream system pressure.
-5-
MK6127/0116
Mark 6127 Series Pressure Reducing Valve
Sizing Considerations
Procedure
The following procedure takes both factors (flow rate/pressure drop) into account through the use of the flow efficent, or Cv. The theory is simple: for best results, a PRV should be sized to operate between 10% and 90% of its
capacity, or in other words, between 10% and 90% of its wide open Cv. It is a four-step procedure:
Step 1: Calculate Cv Minimum
Step 2: Calculate Cv Maximum
Q Minimum= Minimum anticpated flow, GPM
S= specific gravity of fluid (water=1.0)
P1= Inlet pressure at Q minimum, psi
Ps= Desire outlet pressure, psi
Step 3: From the Cv chart on Page 2 , find the size that
includes both the Cv min. and Cv max. you have calculated in either the globe or angle valve column.
Q Max.= Maximum anticipated flow, GPM
P2= Inlet Pressure at Q maximum, psi
PS= Desired outlet pressure, psi
Step 4: From the chart on Page 2, check that the velocity (GPM) at the calculated Q max. does not exceed 25
ft/sec/
Occasionally, the flow range
is so wide that both the Cv
min. and Cv max. will not fit in
the proper range for any one
size value. In such cases, a
parallel valve installation, with
a smaller value by passing
around a larger one, should be
given strong consideration.
Mark 6127-3
Pressure Reducing Valve
How to Order Your Valve
When ordering, please provide:
•
•
•
Series Number
Valve Size
Globe/Angle
•
•
•
•
Pressure Class
Threaded/ Flanged/ Grooved
Trim Material
Adjustment Range
•
•
Pilot Options
Special Needs/ Installation
Requirements
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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