Cla-Val 100-30 User Manual

MODEL

100-30

(Full Internal Port)

Powercheck Valve

• Built-in Automatic Check Valve

• Globe or Angle Pattern

• Drip-Tight, Positive Seating

• Threaded or Flanged Ends

• Packless Construction

The Cla-Val Model 100-30 Powercheck Valve is a
hydraulically operated diaphragm valve with a built-in check
feature to prevent return flow. Available in globe or angle
pattern, it consists of four major components: body,
intermediate chamber, diaphragm assembly, and cover. The
diaphragm assembly is the only moving part.

The diaphragm assembly is guided top, center and bottom by
a precision machined stem and utilizes a non-wicking
diaphragm of nylon fabric bonded with synthetic rubber. A
synthetic rubber disc retained on three and one half sides
forms a drip-tight seal with the renewable seat when pressure
is applied above the diaphragm. When pressure above the
diaphragm is relieved, the valve opens wide. The rate of
closing or opening can be controlled by modulating flow into
or out of the diaphragm chambers.

When a pressure reversal occurs, the valve will immediately
close, preventing reverse flow thru the valve. The split stem
will allow the disc retainer assembly to check closed

regardless of the position of the diaphragm.

Principle of Operation

Four-Way Control

Full Open Operation

When operating pressure below the
diaphragm is greater than the
pressure in the cover chamber, the
valve is held open, allowing full
flow.

Note: For optimum operation of built-in check feature, installation with stem vertically up is recommended.

Tight Closing Operation

When pressure below the
diaphragm is relieved and operating
pressure is applied to the cover
chamber, the valve closes
drip-tight.

Four-Way Control

When a static condition or pressure
reversal occurs, the split stem
design allows the valve to instantly
check closed. Return flow is
prevented regardless
of the diaphragm's
position.

Four-Way Control

Check Action

Specifications

Model 100-30

Available Sizes

Pattern Threaded Flanged

Globe 21⁄2" - 3" 21⁄2" - 8"

Angle 21⁄2" - 3" 21⁄2" - 8"

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)

Standards*

Operating Temp. Range

Fluids

-40° to 180° F

Pressure Class

Flanged

ANSI

150

Class

Materials

Component Standard Material Combinations

Body & Cover Ductile Iron Cast Steel Bronze

Available Sizes 21⁄2" - 8" 21⁄2" - 8" 21⁄2" - 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

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

2 1/2" Globe, Threaded

300

Class

4" Angle, Globe

4" Angle, Flanged

Options

Epoxy Coating - suffix KC

This option NSF 61 Listed and FDA
approved, fusion bonded epoxy coating
is for use with cast iron, ductile iron or
steel valves. This coating is resistant to
various water conditions, certain acids,
chemicals, solvents and alkalies.

coatings are applied in accordance with
AWWA coating specifications C116-03.
Do not use with temperatures above

Viton® Rubber Parts

-

suffix KB

Optional diaphragm, disc and o-ring
fabricated with Viton® synthetic rubber.
Viton® is well suited for use with mineral
acids, salt solutions, chlorinated
hydrocarbons, and petroleum oils; and is
primarily used in high temperature
applications up to 250° F. Do not use
with epoxy coating above 175°F.

Epoxy

175° F.

-

Heavy Spring

suffix KH

The heavy spring option is used in
applications where there is low differential
pressure across the valve, and the
additional spring force is needed to help
the valve close. The option is best suited
for valves used in on-off (non-modulating)
service.

For assistance in selecting appropriate
valve options or valves manufactured
with special design requirements,
please contact our Regional Sales
Office or Factory.

Functional Data Model 100-30

Valve Size

C

V

Factor

Equivalent

Length

of

Pipe

K

Factor

Liquid Displaced from

Cover Chamber When

Valve Opens

*Estimated

C

Factor

V

Formulas for computing C Factor, Flow (Q) and Pressure Drop

Q

=

C

V

K Factor (Resistance Coefficient)

The Value of K is calculated from the formula:
(U.S. system units)

Equivalent Length of Pipe

Equivalent lengths of pipe (L) are determined from the formula:
(U.S. system units)

Fluid Velocity

Fluid velocity can be calculated from the following formula:
(U.S. system units)

Inches 21⁄2 3 4 6 8

Globe

Pattern

Angle

Pattern

Globe

Pattern

Angle

Pattern

Globe Pattern

Angle Pattern

mm.

Gal./Min. (gpm.)

Litres/Sec. (l/s.)

Gal./Min. (gpm.)

Litres/Sec. (l/s.)

Feet (ft.)

Meters (m.)

Feet (ft.)

Meters (m.)

Fl. Oz

U.S. Gal.

ml

Litres

65 80 100 150 200

85 115 200 440 770

20 28 48 106 185

101 139 240 541 990

24 33 58 130 238

53 85 116 211 291

16 26 35 64 89

37 58 80 139 176

12 18 25 43 54

4.6 6.0 5.9 6.2 6.1

3.3 4.1 4.1 4.1 3.7

— — — — —

.04 .08 .17 .53 1.26

163 303 643 — —

— — — 2.0 4.8

Where:

V

K =

P

=

894d

C

v

C

=

C

P

Q

P

V

( P):

2

Q

V

4

2

C

=

U.S. (gpm) @ 1 psi differential at 60 F water

V

or

(l/s) @ 1 bar (14.5 PSIG) differential

=

at 15 C water

=

inside pipe diameter of Schedule 40 Steel Pipe (inches)

d

friction factor for clean, new Schedule 40 pipe

=

f

(dimensionless) (from Cameron Hydraulic Data,

18th Edition, P 3-119)

d

V =

L =

.4085 Q

K
12 f

2

d

Resistance Coefficient (calculated)

=

K

=

Equivalent Length of Pipe (feet)

L

=

Flow Rate in U.S. (gpm) or (l/s)

Q

=

Fluid Velocity (feet per second) or (meters per second)

V

=

Pressure Drop in (psi) or (bar)

P

Model 100-30 Flow Chart (Based on normal flow through a wide open valve)

2

Angle Valve Sizes (Inches)

Globe Valve Sizes (Inches)

100

80

60

40

30

20

10

8

Pressure Drop — psi

6

4

3

2

1

10 20 30 40 60 80 100 200 500 1000 2000 5000 10,000 20,000 50,000

5 3

Flow Rate gpm (water)

1/2

3 4

21/2

3

4 6

6

8

8

G

GG

GGG

D

Inlet

DD

DDD

F

FF

100-30

Threaded &

Flanged

A

E

C

(MAX)

K

J

H

Inlet

Outlet

AA

AAA

B

(Diameter)

Dimensions

Model 100-30

Valve Size (Inches) 2 1⁄2 3 4 6 8
A Threaded
AA 150 ANSI
AAA 300 ANSI
B Dia.
C Max.
D Threaded
DD 150 ANSI
DDD 300 ANSI
E
F 150 ANSI
FF 300 ANSI
G Threaded
GG 150 ANSI
GGG 300 ANSI
H NPT Body Tapping
J NPT Cover Center Plug
K NPT Cover Tapping

Valve Stem Internal
Thread UNF

Stem Travel
Approx. Ship Wt. Lbs.

11.00 12.50 — — —

11.00 12.00 15.00 20.00 25.38

11.62 13.25 15.62 21.00 26.38

8.00 9.12 11.50 15.75 20.00

10.31 11.19 14.25 18.44 21.81

5.50 6.25 — — —

5.50 6.00 7.50 10.00 12.69

5.81 6.63 7.81 10.50 13.19

1.69 2.06 3.19 4.31 5.31

3.50 3.75 4.50 5.50 6.75

3.75 4.13 5.00 6.25 7.50

4.00 4.50 — — —

4.00 4.00 5.00 6.00 8.00

4.31 4.38 5.31 6.50 8.50
.50 .50 .75 .75 1
.50 .50 .75 .75 1
.50 .50 .75 .75 1

10-32

1

⁄4-28

1

⁄4-28

3

⁄8-24

3

⁄8-24

0.7 0.8 1.1 1.7 2.3

65 95 190 320 650

Valve Size (mm) 65 80 100 150 200
A Threaded
AA 150 ANSI
AAA 300 ANSI
B Dia.
C Max.
D Threaded
DD 150 ANSI
DDD 300 ANSI
E
F 150 ANSI
FF 300 ANSI
G Threaded
GG 150 ANSI
GGG 300 ANSI
H NPT Body Tapping
J NPT Cover Center Plug
K NPT Cover Tapping

Valve Stem Internal
Thread UNF

Stem Travel
Approx. Ship Wt. Kgs.

279 318 — — —
279 305 381 508 645
295 337 397 533 670
203 232 292 400 508
262 284 362 468 554
140 159 — — —
140 152 191 254 322
148 168 198 267 335

43 52 81 109 135
89 95 114 140 171

95 105 127 159 191
102 114 — — —
102 102 127 152 203
110 111 135 165 216

.50 .50 .75 .75 1
.50 .50 .75 .75 1
.50 .50 .75 .75 1

10-32

1

⁄4-28

1

⁄4-28

3

⁄8-24

18 20 28 43 58

30 43 86 145 295

Cla-Val Control Valves operate with maximum efficiency when mounted in horizontal piping with the main valve cover UP, however, other
positions are acceptable. Due to component size and weight of 8 inch and larger valves, installation with cover UP is advisable. We recommend
isolation valves be installed on inlet and outlet for maintenance. Adequate space above and around the valve for service personnel should be
considered essential. A regular maintenance program should be established based on the specific application data. However, we recommend a
thorough inspection be done at least once a year. Consult factory for specific recommendations.

CLA-VAL

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

Copyright Cla-Val 2011 Printed in USA Specifications subject to change without notice.

E-100-30 (R-8/2011)

3

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