Cla-Val 40-30/640-30 - Manual (Page 2)

Principle of Operation
Tight Closing Operation Full Open Operation Modulating Action
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. The valve modulates when
diaphragm chamber pressure is
held at a 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.
F FF
EE
E
B
C
B
D
100AF
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
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 - - - - -
CV factor 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.
CV Factor
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, contains on three and one-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 40-30 Globe or Angle
3. Pressure Class
4. Temperature and fluid to be handled
5. Static and flowing line pressure
6. Operating fluid and pressure
(if other than line pressure)
7. Body and trim materials
8. End details
E-40-30 (R-08/2012)