Delta T Products

The standard by which all others are measured.

 

Products

Valves, Gear Operators, and Accessories

Iron Body

(Series 050/051)

  • Iron Body Butterfly Valve; sizes 1-1/2” – 48”
  • Wafer and Lugged Body Styles Available
  • Manual Valves with handle or gear operator available
  • ISO 5211 mounting patterns for ease of actuation

Stainless Steel Body

(Series 650/651)

  • Stainless Steel Body Butterfly Valve; sizes 2” – 12”
  • Wafer and Lugged Body Styles Available
  • Manual Valves with handle or gear operator available
  • ISO 5211 mounting patterns for ease of actuation

Manual

(Gear Operator)

  • ISO 5211 Valve Mounting Interface
  • Female Double-Square Output Drive
  • Adapter Bushings Available for Smaller Square Stems, DD or Keyed Shafts
  • Epoxy Coated Cast Iron Housing
  • Stamped Steel or Malleable Iron Handles

Declutchable

(Gear Operator)

  • Low-Profile Sandwich Style Fits Between Valve and Actuator
  • ISO 5211 Valve and Actuator Mounting Interface
  • Female Double-Square Output Drive
  • Adapter Bushings Available for Smaller Square Stems, DD or Keyed Shafts
  • Epoxy Coated Cast Iron Housing
  • Stamped Steel or Malleable Iron Handles

Disc Materials

(Details, Recommend Applications, Not Recommended For)

DI-NP

Nickel Plated Ductile Iron
Ductile iron disc for strength, coated with Nickel Plating for corrosion resistance and increased abrasion resistance.

Recommend Applications:
Air, Kerosene, Oils, Ketones, Hydrocarbons, Solvents, Detergents, Salts, Concentrated Organic Acids

Not Recommended For:
Inorganic Acids, Diluted Organic Acids

CF8M

316 Stainless Steel
Stainless steel disc is inherently strong for industrial use and corrosion resistant for a wide range of chemical and environmental applications.

Recommended Applications:
Acetic Acids, Air, Automotive Oils & Fuels, Beer, Freon, Gasoline, Ketones, Oils, Oxygen, Steam, Sea Water, Potable Water

Not Recommended For:
Acids

AL-BZ

Aluminum Bronze
Strength similar to carbon steel, but with an aluminum oxide layer on the surface for excellent corrosion resistance.

Recommended Applications:
Sea water, brine, detergents, gasoline, alcohols, esters, ketones, potable water

Not Recommended For:
Acids

Polished

Polished 316 Stainless Steel
All the benefits of stainless steel strength and corrosion resistance, plus a highly polished surface for sanitary applications.

Recommended Applications:
Sanitary Applications, Potable Water

Not Recommended For:
Acids

NY11

Nylon 11 Coated Ductile Iron
Ductile iron disc for strength, coated with Nylon 11 for corrosion resistance and excellent abrasion resistance.

Recommended Applications:
Inorganic salts, alkalis, most solvents, most organic acids, hydrocarbons, oils, kerosene, ketones, esters, detergents, sea water, abrasives

Not Recommended For:
Inorganic acids, phenols,
chlorinated solvents

PTFE

PTFE Coated
316 Stainless Steel

Recommended Applications:
Acids, Alcohols, Solvents, Oils, Potable Water

Not Recommended For:
Fluorine

Seat Material Guide

(General Applications, Temperature Range at Full Rated Pressure, Not Recommended For)

Example 

Seat Material (Backing Material)

General Application

Temperature Range at Full Rated Pressure

Not Recommended For

seat2

EPDM (Phenolic) EPDM

H20, Air, Brine, Abrasives, Phosphates,
Esters Ketones, Alkali, Food Compounds,
Liquids and Solids, Diluite Inorganic Acids,
Caustic Soda

-40°F to 275°F (-40°C to 135°C)

Hydrocarbons, Oils, Fats, Dry Air

 seat-white

White EPDM Food Grade (Phenolic) WEF

-40°F to 230°F (-40°C to 110°C)

 seat2

Black EPDM Food Grade (Phenolic) BEF

-40°F to 230°F (-40°C to 110°C)

 seat2

High Temp EPDM (Phenolic) HT-EPDM

Standard EPDM
+ Low Pressure Saturated Steam

-4°F to 302°F (-20°C to 150°C)

 seat2

Wear Resistant EPDM (Phenolic) WR-EPDM

Standard EPDM + Abrasive Products

14°F to 250°F (-40°C to 121°C)

 seat2

BUNA-N (NBR) (Phenolic) BUNA

Hydrocarbons with less than 40%
of aromatics, Natural Gas, Air,
H20, Sea Water, Brine, Alcohols,
Glycols

10°F to 180°F (-12°C to 82°C)

Solvents, Benzene, Xylene

 seat-white

White BUNA Food Grade (Phenolic) WBF

-30°F to 230°F (-30°C to 110°C)

seat2

High Temp BUNA (Hydrogenated NBR) (Phenolic) HNBR

Standard BUNA
+ Low Pressure Saturated Steam

-30°F to 330°F (-34°C to 165°C)

 seat3

VITON (FKM) (Aluminum) VITON

Hydrocarbons wth high concentration
of aromatics, Mineral and Halogenated
Acids, Phorforic Acid, Alphatic
and Aromatic Ethers

0°F to 392°F (-18°C to 200°C)

Steam, Ketones, Amines, Esters, Alkali

 seat4

PTFE over EPDM (Phenolic) PTFE/E

Corrosive Products – Solvents

-4°F to 250°F (-20°C to 121°C)

Abrasive products, Fluorine Gases, Alkaline Metals

 seat4

PTFE over VITON (Aluminum) PTFE/V

-4°F to 250°F (-20°C to 121°C)

 seat2

Natural Rubber (Phenolic) NR

Abrasive Products

-55°F to 210°F (-48°C to 99°C)

???

 seat5

Silicone (Phenolic) SIL

Beverages, Food

-40°F to 400°F (-40°C to 204°C)

Hydrocarbons, Solvents, Steam

 seat2

Chlorosulfonated Syn- thetic Rubber (Phenolic) CSM

Oxidizing Acids, Chromic Acid,
Hydro uoric Acid, Sulphur Based
Acids, Sodium Hypoclonte, ozone

0°F to 275°F (-18°C to 135°C)

Steam, Ketones, Hot Air, Nitric Acid

 seat2

Neoprene (Phenolic) NP

Oils, Dilute Mineral Acids,
Alkali, Fats

20°F to 200°F

Ketones, Concentrated Acids, Solvents for Paint