Materials of construction continued, Materials, Page 3 – Versa-Matic Versa-Surge Surge Suppressors for Air-Driven Diaphragm Pumps Metallic User Manual

Page 4

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520-380-000 11/01

Hytrel®

EPDM

Neoprene

NG=

Neoprene Backup/PTFE Overlay

Aluminum

Buna-N

CI =

Cast Iron

FDA White Nitrile

Surge Suppressor Model VTA3

Meaning of

Abbreviations:

Kit available to convert

to top porting
* Most other types available in dual ported design. See price book or consult factory for details.
Viton® & Hytrel® are registered tradenames of E.I. du Pont. Santoprene® is a registered tradename of Monsanto Corp.

Page 3

B-1-A

I-1-A

NG-1-A

N-1-A

V-1-A

B-1-CI

I-1-CI

NG-1-CI

N-1-CI

V-1-CI

B-1-SS

NG-1-SS

N-1-SS

V-1-SS

MATERIALS

Operating Temperatures

Maximum*

Minimum*

Optimum**

BUNA-N General purpose, oil-resistant. Shows good solvent, oil, water and hydraulic fluid resistance. Should not be used with
highly polar solvents like acetone and MEK, ozone, chlorinated hydrocarbons and nitro hydrocarbons.

NEOPRENE All purpose. Resistant to vegetable oils. Generally not affected by moderate chemicals, fats, greases and many oils
and solvents. Generally attacked by strong oxidizing acids, ketones, esters, nitro hydrocarbons and chlorinated aromatic
hydrocarbons.

HYTREL® Good on acids, bases, amines, and glycols at room temperature.

VIRGIN PTFE Chemically inert, virtually impervious. Very few chemicals are know to chemically react with Teflon®,
molten alkali metals, turbulent liquid or gases, fluorine and a few fluoro-chemicals such as chlorine trifluoride or oxygen difluoride
which readily liberate free fluorine at elevated temperatures.

VITON® Shows good resistance to a wide range of oils and solvents; especially all alipphatic, aromatic and halogenated
hydrocarbons, acids, animal and vegetables oils. Hot water or hot aqueous solutions (over 70

F) will attack Viton®.

EPDM Shows very good water and chemical resistance. Has poor resistance to oil and solvents, but is fair in ketones and
alcohols.

SANTOPRENE® Injection molded thermoplastic elastomer with no fabric layer. Long mechanical flex life. Excellent abrasion
resistance.

SS Alloy Type 316 Stainless Steel equal to or exceeding ASTM specification A743-CF-8M for corrosion resistant iron chromium, iron chromium nickel, and nickel based alloy castings for
general applications. Coomonly referred to as 316 Stainless Steel in the pump industry.

C Alloy "C" equal to ASTM A494 CW-12M-1 specification for nickel and nickel alloy castings commonly referred to as Hastelloy "C" alloy in the pump industry. Hastelloy "C" is a registered
trademark of the Cabot Corporation.

For specific applications, always consult "Chemical Resistance Chart" Technical Bulletin.

*Definite reduction in service life.
**Minimal reduction in service life at ends of range.

190°F
88°C

- 10°F
- 23°C

50°F to 140°F
10°C to 60°C

170°F
77°C-

-35°F
37°C

50°F to 130°F
10°C to 54°C

50°F to 140°F
10°C to 60°C

50°F to 212°F
10°C to 100°C

75°F to 212°F
24°C to 100°C

50°F to 212°F
10°C to 100°C

-10°F
-23°C

-35°F
-37°C

+32°F
0°C

-10°F
-23°C

190°F
88°C

212°F+
100°C+

Surge Suppressor Model VTA80

35 / 15.9

Materials of Construction continued:

Surge Suppressor Model VTA2, continued

Surge Suppressor Model VTA50, continued

Type

Diaphragm Design Wetted

Porting

Code

Level

Parts

(Internal Tapered

Flange Style

Threads)

Shipping
Weight
lbs./kg

Type

Diaphragm Design

Wetted

Porting

Code

Level

Parts

(Internal Tapered

Flange Style

Threads)

2" BSPT

1½" BSPT

NG-1-SS

N-1-SS

V-1-SS

I-1-HC

NG-1-HC

N-1-HC

V-1-HC

3" BSPT

PN10 80 mm DIN

PN10 80mm DIN

109 / 49.4

105 / 47.6

89 / 40.4

109 / 49.4

89 / 40.4

3" ANSI Style

3" NPT

2" NPT

NG-1-SS

N-1-SS

V-1-SS

I-1-HC

NG-1-HC

N-1-HC

V-1-HC

B-1-A

I-1-A

NG-1-A

N-1-A

V-1-A

B-1-CI

I-1-CI

NG-1-CI

N-1-CI

V-1-CI

B-1-SS

NG-1-SS

N-1-SS

V-1-SS

Santoprene®

Viton®

SS =

Alloy Type 316SS

HC =

Alloy "C" (Hastelloy "C" equivalent)

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