Cla-Val 129-26 User Manual

MODEL

129-26

High Level Shut-Off Valve

• Installed in the fill line to either underground or above ground
fuel storage tanks

• Pilot control and hydraulically operated by line pressure,
closing fully when tank is full

• Provides accurate, repeatable high level shut-off

• Can be serviced without removal of valve from line

• Fail-safe operation

• Position indicator is standard

• Available in aluminum, cast steel, stainless steel or ductile iron

The Cla-Val Model 129-26 Hytrol Valve is used as the basic unit in almost all Cla-Val
automatic control valves for petroleum applications. The 129-26 is a hydaulically-operated,
diaphragm actuated, globe or angle pattern valve. It is available in various materials and
full range of sizes. It consists of three major components: body, diaphragm assembly and
cover. The diaphragm assembly is the only moving part. The rugged simplicity of design
and packless construction assure a long life dependable, trouble-free operation. Should
the diaphragm become damaged the valve will close tight, providing “fail safe” operation.
The 129-26 Hytrol Valve is used in many types of piping system requiring control, flow
regulation, rate of flow control, or check valve operation.

Schematic Diagram

Item Description

1 100-34 Hytrol (Reverse Flow)
2 X47A Ejector
3 Bell Reducer
4 CFM2 Float Control
5 X101 Valve Position Indicator

X105L Switch Assembly

Optional Features

Item Description

A X46A Flow Clean Strainer

B CK2 (Isolation Valve)
C CV Flow Control (Closing)
G 81-01 Check Valve
Q Quick Connect Assembly
S CV Flow Control (Opening)
T 55F Thermal Relief Control

Specifications

Sizes

Globe: 1 1/2” - 16” flanged
Angle: 2” - 16” flanged

End Details

Flanged:

Cast Aluminum, 150 ANSI B16.1
Cast Bronze, 150 & 300 ANSI B16.24
Ductile Iron, 150 & 300 ANSI B16.42
Cast Steel, 150 & 300 ANSI B16.5

Temperature Range

Light Petroleum Product -40° to+140°F

Pressure Ratings

150 class 175-PSI Max.
150 class 275-PSI Max.
250 class 300-PSI Max.
300 class 400-PSI Max.

Material

Body & cover:

Cast Aluminum 356-T6
Cast Bronze ASTM B62
Ductile Iron ASTM A-536
Cast Stainless Steel 303
Cast Steel ASTM A216-WCB

Valve trim:

Bronze ASTM B61
Stainless Steel 303

Rubber parts:

Buna-N® Synthetic Rubber
Viton

Other Materials

Available on Special Order

Principle of Operation

B

C

Tight Closing Operation

When pressure from the valve inlet (or
an equivalent independent operating
pressure) is applied to the diaphragm
chamber, the valve closes drip-tight.

When pressure in the diaphragm chamber
is relieved to zone of lower pressure under
the valve. Flow in either direction is
permitted.

Full Open Operation

The valve modulates when diaphragm
chamber pressure is held at an
intermediate point between inlet and
discharge pressure changes, the
pressure above the diaphragm is varied
allowing the valve to modulate and
compensate for the changes.

SIZE 1 1/2 2 2 1/2 3 4 6 8 10 12 14 16

A 125 & 150 ANSI 8.50 9.38 11.00 12.00 15.00 20.00 25.38 29.75 34.00 39.00 41.38
AA 250 & 300 ANSI 9.00 10.00 11.62 13.25 15.62 21.00 26.38 31.12 35.50 40.50 43.50
B DIAMETER 5.62 6.62 8.00 9.12 11.50 15.75 20.00 23.62 28.00 32.75 35.50
C MAX. 5.50 6.50 7.56 8.19 10.62 13.38 16.00 17.12 20.88 24.19 25.00
D 1.12 1.50 1.69 2.06 3.19 4.31 5.31 9.25 10.75 12.62 15.50
E 125 & 150 ANSI 4.75 5.00 6.00 7.50 10.00 12.75 14.88 17.00 19.50 20.81
EE 250 & 150 ANSI 5.00 5.88 6.38 7.88 10.50 13.25 15.56 17.75 20.25 21.62
F 125 & 150 ANSI 3.25 4.00 4.00 5.00 6.00 8.00 8.62 13.75 14.88 15.69
FF 250 & 300 ANSI 3.50 4.31 4.38 5.31 6.50 8.50 9.31 14.50 15.62 16.50

CVFactor

VALVE SIZE 1 1/2 2 2 1/2 3 4 6 8 10 12

100-34 GLOBE PATTERN 26 49 80 107 200 440 771 1151 1600
100-34 ANGLE PATTERN 30 62 100 137

CVfactor is defined as the number of gallons per minute of water at 60˚F. which will flow at a 60˚F. which will flow at a
one pound per square inch differential.

Purchase Specifications

The valve shall be hydraulically-operated, diaphragm-actuated, globe or angle pattern
valve. It shall contain a resilient, synthetic rubber disc, having a rectangular cross
section, contained on three and on-half sides by a disc retainer and disc guide, forming
a tight seal against a single renewable seat. The valve stem shall be guided at both
ends by a bearing in the valve cover and an integral bearing in the valve seat. The
diaphragm assembly shall be the only moving part and shall form a sealed chamber in
the upper portion of the valve, separating operating pressure from line pressure. The
diaphragm consist of nylon fabric bonded with synthetic rubber and shall not be used
as a seating surface. Packing glands and/or stuffing boxes are not permitted and there
shall be no pistons operating the valve. All necessary repairs shall be possible without
removing the valve from the line. If the diaphragm becomes damaged the valve shall
close tight. This valve shall be a Model 100-34 (globe pattern or angle pattern) Hytrol
Valve as manufactured by Cla-Val. Newport Beach, California.

Specify When Ordering

1. Size

2. Model 129-26 Globe or Angle

3. Pressure Class

4. Temperature and fluid to be handled

5. Static and flowing line pressure

6. Operating fluid and pressure

7. Body and trim materials

8. End details

Modulating Action

100AF

B

C

E

EE

(if other than line pressure)

D

FFF

E-129-26 (R-06/2012)

LA-VAL

PO Box 1325 Newport Beach CA 92659-0325

Phone: [phone] Fax: [phone]

CLA-VAL CANADA CLA-VAL EUROPE

4687 Christie Drive
Beamsville, Ontario
Canada L0R 1B4
Phone: [phone]
Fax: [phone]

©COPYRIGHT CLA-VAL 2012 Printed in USA

Specifications subject to change without notice.

Chemin dés Mesanges 1
CH-1032 Romanel/
Lausanne, Switzerland
Phone: [phone]
Fax: [phone]

www.cla-val.com

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