Cla-Val 100-31 600 User Manual

MODEL

100-31

(Reduced Internal Port)

600 Series

Powercheck Valve

• Built-in Automatic Check Valve

• Reduced Cavitation Design

• Service Without Removal From Line

• Packless Construction

• Drip-Tight, Positive Seating

The Cla-Val Model 100-31 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: the body, intermediate chamber, diaphragm assembly and
cover. The diaphragm assembly is the only moving part.

The diaphragm assembly which is guided top, center and bottom by a
precision machined stem 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 the flow into or out
of the cover chamber. When a pressure reversal occurs the valve will
immediately close, preventing reverse flow through the valve. The
split stem will allow the disc retainer assembly to check closed

regardless of the position of the diaphragm.

The Model 100-31 Powercheck Valve is recommended on system
applications where a positive check feature is necessary to prevent
reverse flow.

Principle of Operation

4 - 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.

4 - 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.

4 - Way Control

Check Action

Specifications

Model 100-31

Available Sizes

Pattern Flanged

Globe 4" - 6" - 8" - 10"

Angle 4" - 6 - 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

Class

Materials

Component Standard Material Combinations

Body & Cover Ductile Iron Cast Steel Bronze

Available Sizes 4" - 10" 4" - 10" 4" - 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 on sizes 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

300

4" Globe, Flanged

6" Globe, 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.

ings 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 coat-

175° F.

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

6" Angle, Flanged

Functional Data

K =

894d

4

C

2

v

L =

K
12 f

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)

d

V =

.4085 Q

2

d

C

V

Factor

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

V

( P):

C

V

=

Q

P

C

V

=

Q

P

C

V

=

Q

P

2

V

Where:

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

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

or

at 15 C water

inside pipe diameter of Schedule 40 Steel Pipe (inches)

friction factor for clean, new Schedule 40 pipe

(dimensionless) (from Cameron Hydraulic Data,

18th Edition, P 3-119)

Resistance Coefficient (calculated)

Equivalent Length of Pipe (feet)

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

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

Pressure Drop in (psi) or (bar)

=

=

=

=

=

=

=

=

=

P

V

Q

L

K

f

d

C

Model 100-31

Valve Size

Globe

C

Factor

Equivalent

Length

Pipe

Factor

Liquid Displaced from

Cover Chamber When

Valve Opens

Pattern

V

Angle

Pattern

Globe

Pattern

of

K

Angle

Pattern

Inches 4 6 8 10

mm.

Gal./Min. (gpm.)

Litres/Sec. (l/s.)

Gal./Min. (gpm.)

Litres/Sec. (l/s.)

Feet (ft.)

Meters (m.)

Feet (ft.)

Meters (m.)

Globe Pattern

Angle Pattern

Fl. Oz

U.S. Gal.

ml

Litres

100 150 200 250

136 229 480 930

32.5 55 115 223

135 233 545 —

32 56 132 —

251 777 748 621

76.4 237.1 228.1 189.5

254 751 580 —

77.6 229 176.9 —

12.7 23.1 15.7 10.4

12.9 22.3 12.2 —

— — — —

.08 .17 .53 1.26

— — — —

.30 .64 2.0 4.8

Application Note

The distinctive smooth flow path of the 600
series Powercheck valve is engineered to
overcome cavitation problems. It's unique
design is highly resistant to cavitation damage
under severe pressure drops. Tests have
proven it to be effective in preventing valve
body and seat pitting.

We also offer a free computerized cavitation
analysis. This analysis provides cavitation
damage information for actual conditions
provided by the customer. If there is an appli­cation where the potential for cavitation exists,
the 600 series Powercheck valve provides
substantial resistance to this problem.

Model 100-31 Flow Chart (Based on normal flow through a wide open valve)

Dimensions

H

100-31

Flanged

(Diameter)

B

J

Model 100-31

K

C

(MAX)

Inlet

Outlet

F

FF

E

EE

Inlet

A

D

DD

AA

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

Valve Stem Internal
Thread UNF

Stem Travel
Approx. Ship Wt. Lbs.

Valve Size (mm)

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

Valve Stem Internal
Thread UNF

Stem Travel
Approx. Ship Wt. Kgs.

4 6 8 10

13.88 17.75 21.38 26.00

14.50 18.62 22.38 27.38

9.12 11.50 15.75 20.00

8.62 15.25 20.25 23.75

6.94 8.88 10.69 —

7.25 9.38 11.19 —

5.50 6.75 7.25 —

5.81 7.25 7.75 —

4.50 5.50 6.75 8.00

5.00 6.25 7.50 8.75
.50 .75 .75 1
.50 .75 .75 1
.50 .75 1 1

1

⁄4-28

0.6 0.8 1.7 2.3

135 230 480 785

100 150 200 250

353 451 543 660
368 473 568 695
232 292 400 508
302 387 514 603
176 226 272 —
184 238 284 —
140 171 184 —
148 184 197 —
114 140 171 203
127 159 191 222

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

1

⁄4-28

20 28 43 58
61 104 218 356

1

⁄4-28

1

⁄4-28

3

⁄8-24

3

⁄8-24

3

⁄8-24

3

⁄8-24

Service and Installation

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 10 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.

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

CLA-VAL

©

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

E-100-31 (R-8/2011)