Item # 8"/07-1-T/A, Flanged End Automated Cast Iron Diaphragm Valves (Glass Lining) On Century Instrument Co.

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Process Control Valves and Instrumentation Products > Automated Diaphragm Valves > Metal Glass Diaphragm Valves > Flanged End Automated Cast Iron Diaphragm Valves (Glass Lining) > Item # 8"/07-1-T/A


	Item # 8"/07-1-T/A, Flanged End Automated Cast Iron Diaphragm Valves (Glass Lining)

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Wide Selection — available in a wide variety of body materials, linings and end connections. By utilizing such highly resistant linings as Saran, Polypropylene, Kynar, Tefzel, Glass, Rubber, etc., virtually any chemical service within the pressure/temperature limits of the valve can be handled safely and economically.

No Stem Leakage — since the diaphragm isolates the fluid stream there is no need for a packing gland — no atmospheric contamination, no leakage or waste, no expensive maintenance of stem, seats or stuffing box.

Bubble-Tight Shut Off — results when the downward thrust of the stem and compressor assembly molds the flexible diaphragm against the weir. The diaphragm will accommodate itself to rust, scale, slurry, or fibrous material.

Streamline Flow — with minimum pressure drop because of the absence of grooves, pockets or sharp changes in direction of flow.

Cost Saving — simple in-line maintenance. In less time than it takes to remove and replace a conventional valve, a new body diaphragm can be installed. Thus providing essentially a brand new valve at a tiny faction of the cost of a new or repaired conventional valve — all without removing the valve body from the line.

Flow Control — the automated diaphragm valve provides an excellent means of handling the changing flow requirements in most process installations. By the addition of a positioner to the actuator, even more precise control can be achieved, especially in the handling of slurries, or viscous and fibrous materials.

Body Materials — available in cast iron, ductile iron, carbon steel, stainless steel, Alloy-20, aluminum and bronze

Specifications · Diaphragm Selection · Standard Actuator Features

Specifications

Body Material

Cast Iron

Temperature Range

-30 to 300 ºF

Typical Applications

Maximum resistance to aggressive chemicals and solvents at elevated temperatures. Excellent anti-stick properties.

Lining Options

Glass

Material/Lining Classification

Metal Glass

End Connection

(1) Flanged Lined Ends
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End to End Dimension A

20 5/8 in

Valve Size [Fraction]

8 in

Valve Size [Decimal]

8.00 in
203.20 mm

Diaphragm Control Valve Options

730-RV, Pilot Operated Controller Option

Line Pressure Conditions¹

0% P.D
100% P.D.

Services

Acetaldehyde
Acetic Acid (Glacial)
Acetic Acid (to 60%)
Acrylonitrile
Aluminum Chloride
Aluminum Nitrate
Aluminum Sulfate
Amino Acid
Ammonium Bromide
Ammonium Nitrate
Battery Acid
Brine (Chlorinated)
Brine (Pickling)
Bromine, Gas
Bromine, solution
Calcium Hypoclorite
Cane Sugar - Refined
Carbon Tetrachloride
Carbonated Beverages
Carbonic Acid
Casein Water Paint
Chlorinated Hydrocarb.
Chromic Acid
Chromium
Citric Acid
Citrus Concentrate
Copper Chloride
Copper Plating
Corn Oil
Corn Syrup
Distilled Water
Edible Oils
Ethylene Dibromide
Ethylene Dichloride
Ethylene Glycol
Fatty Acids
Ferric Chloride
Ferric Nitrate
Formaldehyde - 40%
Formic Acid - 85%
Hydrobromic Acid
Hydrochloric Acid
Hydrogen Bromide
Hydrogen Chloride
Hydrogen Peroxide (30%)
Hydrogen Peroxide (90%)
Lactic Acid
Latex
Mercaptans
Milk
Muriatic Acid
Neoprene Latex
Nitric Acid - to 20%
Nitric Acid - to 70%
Paint
Persulfuric Acid
Phenol
Photographic Solutions
Picric Acid
Plasma
Potassium Perchlorate
Propylene Glycol
Rayon Spin Bath
Salt Brine
Sea Water
Silver Nitrate
Sodium Chloride
Sodium Nitrate
Sodium Perchlorate
Soft Drink Syrups
Sugar
Sulfuric Acid - to 50%
Sulfuric Acid 50 to 79%
Tomato Juice
Trichioro-ethylene
Vacuum below 25 mm, Hg.
Vacuum to 25 mm. Hg.
Varnish
Vegetable Juice
Vinegar
Water - PotaDle
Water - Sterile
Whiskey/Wine
Yeast

Weight

354 lb

¹ 100% P.D. means that downstream pressure falls to 0 psig.

0% P.D. means that downstream pressure remains at, or returns to essentially the same as the upstream pressure.

Diaphragm Selection

Diaphragm Material		PTFE Faced

Diaphragm Material Description		TFE PTFE - over the years, a broad range of elastomeric and plastic diaphragms have been developed which will successfully handle all aggressive fluids, gases and slurries, as well as food, beverage and pharmaceutical products where F.D.A. approval of materials of construction is required. The TFE faced diaphragm is backed with fabric reinforced elastomer to provide the high chemical and temperature resistant qualities of TFE with flexibility for longer life and tighter shut-off.

Standard Actuator Features

Actuator Size Number

0, Actuator Size "0"
1, Actuator Size "1"
2, Actuator Size "2"
2A, Actuator Size "2A"
3, Actuator Size "3"
4, Actuator Size "4"
5, Actuator Size "5"

Action of Actuator¹

(TYPE C) Air to Open - Air to Close
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(TYPE H) Spring to Open - Air to Close
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(TYPE HRT) Spring to Close - Air to Open
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¹ The choice of actuator size is determined by the line pressure through the value and the available operating air pressure. Some operating conditions call for substantial line pressure downstream when the valve closes.

After the valve closes, if the downstream pressure is less that 30 % of the upstream pressure - this condition is 100% Δ P. If the downstream pressure is 30% or more of the upstream pressure - the condition is 0% Δ P.

MORE IMAGES


	· TFE/Rubber Backed

Item # 8"/07-1-T/A, Flanged End Automated Cast Iron Diaphragm Valves (Glass Lining)