Exploded View

(1-1/2” – 12” Sizes)

1
Body Ductile Iron ASTM A536
2
Stem Retainer Carbon Steel, Plated
3
Seat
4
Stem Retainer Screws Carbon Steel, Plated
5
Upper Stem Stainless Steel ASTM A582, Alloy 416 or 410, 316SS Option
6
Disc
7
Lower Stem Stainless Steel ASTM A582, Alloy 416 or 410, 316SS Option
8
Lower Stem Retainer Ductile Iron ASTM A536
9
Bushing PTFE/Graphite
10
O-Ring EPDM, BUNA-N, Fluoroelastomer
11
Nameplate Tag Aluminum

(14-48” Sizes)

1
Body Ductile Iron ASTM A536
2
Stem Retainer Carbon Steel, Plated
3
Seat
4
Stem Retainer Screws Carbon Steel, Plated
5
Upper Stem Stainless Steel ASTM A582, Alloy 416 or 410, 316SS Option
6
Disc
7
Lower Stem Stainless Steel ASTM A582, Alloy 416 or 410, 316SS Option
8
Lower Stem Retainer Ductile Iron ASTM A536
9
Lower Stem Retainer Bolts and Washers Carbon Steel, Plated
10
Bushing PTFE/Graphite
11
O-Ring EPDM, BUNA-N, Fluoroelastomer
12
Bushing PTFE/Graphite

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