Page 1
90-72
MODEL
(Full Internal Port)
690-72
(Reduced Internal Port)
Pressure Reducing Valve with
Low Flow By-Pass
• Modulating Control
• Maintains Constant Outlet Pressure Over a
Wide Range of Flows
• Durable Construction
• Convenient and Space Saving
The Cla-Val Model 90-72/690-72 Pressure Reducing Valve with
Low Flow By-Pass automatically reduces a higher inlet pressure
to a steady lower downstream pressure, regardless of changing
flow rate. The low flow by-pass capability is achieved by using
the Cla-Val Model 990 Direct Acting Pressure Reducing Valve as
an integral part of the main valve. By doing this, space is saved
and installation and maintenance become much easier.
The pressure reducing valve is hydraulically operated and
controlled by a Cla-Val CRD pilot control, which senses pressure
at the main valve outlet. An increase in outlet pressure forces the
CRD pilot control to close and a decrease in outlet pressure
opens the control. This causes the main valve cover pressure to
vary, modulating the main valve, thereby, maintaining constant
outlet pressure.
Schematic Diagram
Item Description
1 Hytrol (Main Valve)
2 X47A Ejector
3 CRD Pressure Reducing Control
4 990 Pressure Reducing Valve
5 CK2 (Isolation Valve)
Optional Features
Item Description
A X46A Flow Clean Strainer
B CK2 (Isolation Valve)
C CV Flow Control (Closing)*
D Check Valves with Isolation Valve
M
X144 e-FlowMeter
P X141 Pressure Gauge
S CV Speed Control (Opening)
V X101 Valve Position Indicator
Y X43 "Y" Strainer
The optional closing speed control on this valve should
*
always be open at least three (3) turns off its seat.
Typical Applications
The Model 990 low flow pressure reducing by-pass is set to a
higher pressure than the CRD pilot control. The 990 responds to
pressure changes at the main valve outlet. When the CRD
closes, the Model 990 remains open, allowing low flow to
by-pass the main valve. The 990 closes when the flow
decreases and the downstream pressure reaches its set-point.
The Cla-Val Model 90-72/690-72 is not a substitute for a low flow
bypass valve in all cases. This valve is commonly used in
building where 1-15 gpm low flows are common in off peak
usage.The bypass on this valve is limited to the body tapping
size on the main valve.
*
This valve has the flexibility to be installed in a distribution
system where the demand varies over a wide range. This frequently occurs in industrial, residential, educational, high-rise
buildings and other applications. Another important feature of
the valve is its space efficient configuration, allowing easy
installation and maintenance.
CLA-VAL 90-72/690-72
Pressure Reducing Valve
Page 2
Model 90-72 (Uses Basic Valve Model 100-01)
Pressure Ratings
Valve Body & Cover
Grade Material
ASTM A536 Ductile Iron B16.42 250 400 400 400
ASTM A216-WCB Cast Steel B16.5 285 400 400 400
ASTM B62 Bronze B16.24 225 400 400 400
Note: * ANSI standards are for flange dimensions only.
Flanged valves are available faced but not drilled.
‡ End Details machined to ANSI B2.1 specifications.
Valves for higher pressure are available; consult factory for details
(Recommended Maximum Pressure - psi)
Pressure Class
Flanged Grooved Threaded
ANSI
Standards*
150
Class
300
Class
300
Class
End‡
Details
Dimensions
(In inches)
H
Inlet
G
GG
GGG
100-01
Threaded &
Flanged
A
AA
AAA
B
Inlet
(Diameter)
D
DD
DDD
J
K
C
(MAX)
E
X
Outlet
F
FF
Y
Materials
Component Standard Material Combinations
Body & Cover Ductile Iron Cast Steel Bronze
Available Sizes 1" - 8" 1" - 8" 1" - 8"
Disc Retainer &
Diaphragm Washer
Trim: Disc Guide,
Seat & Cover Bearing
Disc Buna-N®Rubber
Diaphragm Nylon Reinforced Buna-N®Rubber
Stem, Nut & Spring Stainless Steel
Cast Iron Cast Steel Bronze
Bronze is Standard
Stainless Steel is Optional
100-01
Grooved
H
Inlet
For material options not listed, consult factory.
Cla-Val manufactures valves in more than 50 different alloys.
Model 90-72 Dimensions (In Inches) - For larger sizes, consult Factory
Valve Size (Inches) 11 1/4 1 1/2 22 1/2 3 4 6 8
A Threaded
AA 150 ANSI
AAA 300 ANSI
AAAA Grooved End
B Dia.
C Max.
CC Max. Grooved End
D Threaded
DD 150 ANSI
DDD 300 ANSI
DDDD Grooved End
E
EE Grooved End
F 150 ANSI
FF 300 ANSI
G Threaded
GG 150 ANSI
GGG 300 ANSI
GGGG Grooved End
H NPT Body Tapping
J NPT Cover
K NPT Cover Tapping
Stem Travel
Approx. Ship Wt. Lbs.
X Pilot System 11 11 11 13 14 15 17 29 31
Y Pilot System 9 9 9 9 10 11 12 20 22
Z Pilot System 9 9 9 9 10 11 12 20 22
Center Plug
7.25 7.25 7.25 9.38 11.00 12.50 — — —
— — 8.50 9.38 11.00 12.00 15.00 20.00 25.38
— — 9.00 10.00 11.62 13.25 15.62 21.00 26.38
— — 8.50 9.00 11.00 12.50 15.00 20.00 25.38
5.62 5.62 5.62 6.62 8.00 9.12 11.50 15.75 20.00
5.50 5.50 5.50 6.50 7.56 8.19 10.62 13.38 16.00
— — 4.75 5.75 6.88 7.25 9.31 12.12 14.62
3.25 3.25 3.25 4.75 5.50 6.25 — — —
— — 4.00 4.75 5.50 6.00 7.50 10.00 12.69
— — 4.25 5.00 5.88 6.38 7.88 10.50 13.25
— — — 4.75 — 6.00 7.50 — —
1.12 1.12 1.12 1.50 1.69 2.06 3.19 4.31 5.31
— — 2.00 2.50 2.88 3.12 4.25 6.00 7.56
— — 2.50 3.00 3.50 3.75 4.50 5.50 6.75
— — 3.06 3.25 3.75 4.13 5.00 6.25 7.50
1.88 1.88 1.88 3.25 4.00 4.50 — — —
— — 4.00 3.25 4.00 4.00 5.00 6.00 8.00
— — 4.25 3.50 4.31 4.38 5.31 6.50 8.50
— — — 3.25 — 4.25 5.00 — —
.375 .375 .375 .375 .50 .50 .75 .75 1
.25 .25 .25 .50 .50 .50 .75 .75 1
.375 .375 .375 .375 .50 .50 .75 .75 1
0.4 0.4 0.4 0.6 0.7 0.8 1.1 1.7 2.3
15 15 15 35 50 70 140 285 500
(Diameter)
B
Inlet
AAAA
J
K
DDDD
CC
(MAX)
EE
Z
X
Outlet
GGGG
Page 3
Model 690-72 (Uses Basic Valve Model 100-20)
EE
D
E
Inlet
DD
AA
X
100-20
Flanged
F
A
C
(MAX)
K
J
H
Inlet
Outlet
FF
B
(Diameter)
Dimensions
(In inches)
Pressure Ratings
Valve Body & Cover
Grade Material
ASTM A536 Ductile Iron B16.42 250 400
ASTM A216-WCB Cast Steel B16.5 285 400
ASTM B62 Bronze B16.24 225 400
Note: * ANSI standards are for flange dimensions only.
Flanged valves are available faced but not drilled.
Valves for higher pressure are available; consult factory for details
(Recommended Maximum Pressure - psi)
Pressure Class
Flanged
ANSI
Standards*
150
Class
300
Class
Materials
Component Standard Material Combinations
Body & Cover Ductile Iron Cast Steel Bronze
Available Sizes 3" - 10" 3" - 10" 3" - 10"
Disc Retainer &
Diaphragm Washer
Trim: Disc Guide,
Seat & Cover Bearing
Disc Buna-N®Rubber
Diaphragm Nylon Reinforced Buna-N®Rubber
Stem, Nut & Spring Stainless Steel
For material options not listed, consult factory.
Cla-Val manufactures valves in more than 50 different alloys.
Cast Iron Cast Steel Bronze
Bronze is Standard
Stainless Steel is Optional
Y
Z
Model 690-72 Dimensions (In Inches) - For larger sizes, consult Factory
Valve Size (Inches)
A 150 ANSI
AA 300 ANSI
B Dia.
C Max.
D 150 ANSI
DD 300 ANSI
E 150 ANSI
EE 300 ANSI
F 150 ANSI
FF 300 ANSI
H NPT Body Tapping
J NPT Cover Center Plug
K NPT Cover Tapping
Stem Travel
Approx. Ship Wt. Lbs.
X Pilot System 13 15 27 30 33
Y Pilot System 10 11 18 20 22
Z Pilot System 10 11 18 20 22
*Consult Factory
346810
10.25 13.88 17.75 21.38 26.00
11.00 14.50 18.62 22.38 27.38
6.62 9.12 11.50 15.75 20.00
7.00 8.62 11.62 15.00 17.88
— 6.94 8.88 10.69 CF*
— 7.25 9.38 11.19 CF*
— 5.50 6.75 7.25 CF*
— 5.81 7.25 7.75 CF*
3.75 4.50 5.50 6.75 8.00
4.12 5.00 6.25 7.50 8.75
.375 .50 .75 .75 1
.50 .50 .75 .75 1
.375 .50 .75 .75 1
0.6 0.8 1.1 1.7 2.3
45 85 195 330 625
Page 4
C
90-72
Valve
Selection
Inches 1 11⁄4 11⁄2 2 21⁄2 3 4 6 8
mm 25 32 40 50 65 80 100 150
200
Basic Valve
100-01
Suggested
Flow
(gpm)
Suggested
Flow
(Liters/Sec)
100-01 Series is the full internal port Hytrol.
690-72
Valve
Selection
Basic Valve
100-20
Pattern
End Detail T T
Maximum
Maximum
Intermittent
Minimum
Maximum
Maximum
Intermittent
Minimum
100-01 Pattern: Globe (G), Angle (A), End Connections: Threaded (T), Grooved (GR), Flanged (F) Indicate Available Sizes
Inches 3 4 6 8 10
mm 80 100 150 200 250
Pattern
End DetailFFFFF
G, A G, A G, A G, A G, A G, A G, A G, A
T, F,
Gr*
55 93 125 210 300 460 800 1800 3100
68 120 160 260 370 580 990 2250 3900
1111 1 1 1 1 1
3.5 6 8 13 19 29 50 113 195
4.3 7.6 10 16 23 37 62 142 246
.03 .03 .03 .06 .06 .06 .06 .06 0.95
100-20 Pattern: Globe (G), Angle (A), End Connections: Flanged (F) Indicate Available Sizes
G G, A G, A G, A G
G, A
T, F,
Gr
T, F,
Gr*
T, F,
Gr
Gr
F,
F,
Gr*
F,
Gr*
For Lower Flows Consult Factory *Globe Grooved Only
Suggested
Flow
(gpm)
Suggested
Flow
(Liters/Sec)
100-20 Series is the reduced internal port size version of the 100-01 Series. For Lower Flows Consult Factory
Maximum
Minimum
Maximum
Minimum
260 580 1025 2300 4100
11111
16 37 65 145 258
.06 .06 .06 .06
Pilot System Specifications
Adjustment Ranges
CRD
2 to 30 psi
15 to 75 psi
20 to 105 psi
30 to 300 psi
Model 990 (Bypass)
7 to 29 psi
to 87 psi
29
to 145 psi
87
Temperature Range
Water: to 180°
E-90-72/690-72 (09/2013)
Materials
Standard Pilot System Materials
Pilot Control: Bronze ASTM B62
Trim: Stainless Steel Type 303
Rubber:
Buna-N®Synthetic
Optional Pilot System Materials
Pilot Systems are available with optional
Aluminum, Stainless Steel or Monel
materials.
LA-VAL
PO Box 1325 Newport Beach CA 92659-0325
Phone: 949-722-4800 Fax: 949-548-5441
CLA-VAL CANADA CLA-VAL EUROPE
4687 Christie Drive
Beamsville, Ontario
Canada L0R 1B4
Phone: 905-563-4963
Fax: 905-563-4040
©COPYRIGHT CLA-VAL 2013 Printed in USA
Specifications subject to change without notice.
Chemin dés Mesanges 1
CH-1032 Romanel/
Lausanne, Switzerland
Phone: 41-21-643-15-55
Fax: 41-21-643-15-50
www.cla-val.com
Rubber
When Ordering, Please
Specify
1. Catalog No. 90-72 or No. 690-72
2. Valve Size
3. Pattern - Globe or Angle
4. Pressure Class
5. Threaded or Flanged
6. Trim Material
7. Adjustment Range
8. Desired Options
9. When Vertically Installed
10. Product Enhancement
Represented By:
.95
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