ProductsAutomatic Diaphragm ValvesManual Diaphragm ValvesSpare Parts for Diaphragm ValvesDiaphragm Relief ValvesDiaphragm Control Valves
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  
Download PDF Download PDF     Printable Page     Email Email This Page     Save To Favorites Save To Favorites

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



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

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

View
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

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


Copyright © 2011 Century Instrument Company , All Rights ReservedSite created by ThomasNet Web Solutions and powered by Navigator Platform