The Cla-Val Model 100-22 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 an FDA approved 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 100-22 Powercheck Valve is recommended on system
applications where a positive check feature is necessary to prevent
reverse flow.
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
Page 2
Specifications
Model 100 - 22
Available Sizes
PatternFlanged
Globe4" - 24"
Angle4" - 6 - 8"
Pressure Ratings
Valve Body & Cover
GradeMaterial
ASTM A536Ductile IronB16.42250400
ASTM A216-WCB Cast SteelB16.5285400
ASTM B62BronzeB16.24225400
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
ComponentStandard Material Combinations
Body & CoverDuctile IronCast SteelBronze
Available Sizes4" - 24"4" - 16"4" - 16"
Disc Retainer &
Diaphragm Washer
Trim: Disc Guide,
Seat & Cover Bearing
DiscBuna-N®Rubber
DiaphragmNylon Reinforced Buna-N®Rubber
Stem, Nut & SpringStainless Steel
For material options not listed, consult factory.
Cla-Val manufactures valves in more than 50 different alloys.
Cast IronCast SteelBronze
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.
coatings are applied in accordance with
AWWA coating specifications C116-03.
Do not use with temperatures above
®
Rubber Parts- suffix KB
Viton
Optional diaphragm, disc and o-ring fabricated with Viton
®
Viton
is well suited for use with mineral
®
synthetic rubber.
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.
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
Page 3
Functional DataModel 100-22
Valve Size
V
Factor
Pattern
Pattern
Pattern
Pattern
Q
P
C
Factor
Equivalent
Length
of
Pipe
K
Factor
Liquid Displaced from
Cover Chamber When
Valve Opens
*Estimated
C
V
Formulas for computing C Factor, Flow (Q) and Pressure Drop
=
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)
Inches46810121416182024
Globe
Angle
Globe
Angle
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
100150200250300350400460500600
13622948093014581725211029403400*4020
32.555115223350414506705816965
135233545———————
3256132———————
25177774862165475097798311253005
76.4237.1228.1189.5199.4228.7298.1299.9343.2916.6
254751580———————
77.6229176.9———————
12.723.115.710.48.58.910.28.48.819.1
12.922.312.2———————
——————————
.08.17.531.262.514.04.09.69.69.6
——————————
.30.642.04.89.515.115.136.236.236.2
Where:
V
K =
P
=
894d
C
v
=
C
Q
P
V
( P):
2
Q
C
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 100-22 Flow Chart (Based on normal flow through a wide open valve)
Page 4
Dimensions
H
100-22
Flanged
(Diameter)
B
Model 100-22
J
K
C
(MAX)
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
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
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: 949-722-4800 • Fax: 949-548-5441 • E-mail: claval@cla-val.com • Website cla-val.com