Brochure

Viega LLC 1-800-976-9819 www.viega.us
11
Viega MegaPress Systems
Approved Applications
Type of Service
System Operating Conditions MegaPress MegaPress G
Comments Pressure Temperature EPDM HNBR
Fluids/Water
Chilled Water Ethylene Glycol
ProPylene Glycol
200 psi Down to -4°F
√
Hydronic Heating Ethylene Glycol
ProPylene Glycol
200 psi 0°F - 250°F
√
Fire Sprinkler Compliant with UL and FM
for NFPA 13, 13D and 13R
175 psi Ambient
√
Low Pressure Steam Up to 15 psi max. 248°F √
Chemicals
Acetone 70 psi Ambient √
Methylcyclohexane 125 psi Ambient √
Oil and Lubricant
Heating Fuel Oil 125 psi -40°F - 180°F √
Diesel Fuel Compliant with NFPA 30
and 30A
125 psi
√
Canola, Palm, Sunower, Vegetable Oils 150 psi 160°F √
Engine Oil 150 psi Ambient √
Gear Grease 150 psi 104°F √
Hydraulic Fluid Mineral based 200 psi Ambient √
Transmission Fluid 200 psi Ambient √
Gases
Natural Gas, LP Gas and Fuel Oil 125 psi max. -40°F - 180°F √
Compressed Air
Oil Concentrate < 25mg/m3 200 psi up to 140°F √ √
Oil Concentrate > 25mg/m3 200 psi up to 140°F √
Vacuum Max. 29.2in
Hg
up to 140°F
√ √
Oxygen Non-medical Keep oil and fat free /
non liquid
140 psi Up to 140°F
√ √
Nitrogen 200 psi up to 140°F √ √
Argon 200 psi up to 140°F √ √
Ar/CO
2
200 psi up to 140°F √ √
Carbon Dioxide Dry 200 psi up to 140°F √ √
Hexane 125 psi Ambient √
Hydrogen 125 psi Ambient √ √
1. Consult the Viega Technical Support Department for information on applications not listed and applications outside the temperature
and pressure ranges listed above.
2. All systems are recommended to be clearly labeled with the fluid or gas being conveyed. For further information please see the Viega
Technical Support Department.
Viega MegaPress EPDM Sealing Element
Operating temperature: 0°F to 250°F (-18°C to 120°C)
This sealing element is used mainly in the applications
of hydronic heating, chilled water and fire sprinkler
installations. EPDM, or ethylene-propylene-diene
monomer, is shiny black in color. The EPDM sealing
element is a synthetically manufactured and
peroxidically cross-linked general purpose elastomer
with a wide range of applications.
The EPDM sealing element possesses excellent
resistance to aging, ozone, sunlight, weathering,
environmental influences, alkalis and most alkaline
solutions and chemicals used in a broad range of
applications.
Viega MegaPress Sealing Elements
Viega MegaPressG HNBR Sealing Element
Operating temperature: -40°F to 180°F (-40°C to 82°C)
This sealing element is used mainly for fuel gas
applications (not in the liquid state). HNBR, or
Hydrogenated Nitrile Butadiene Rubber, is yellow in
color for easy identification.
With its excellent performance for the most demanding
of applications, HNBR is the ideal choice for applications
needing excellent physical properties, as well as oil
and/or chemical resistance.