Page 134 - PRESS-FIT SYSTEMS FOR DIVERSE APPLICATIONS

3.0 TECHNICAL DATA
SYSTEM DESIGN CONSIDERATIONS

AND TUBE EXPANSION

XPRESS CARBON AND STAINLESS STEEL GREEN FPM
(VITON O-RINGS - SV105)
®
Compressed air installation
XPress Carbon fittings with zinc plated precision carbon steel tubes which fulfill EN Important: On completion, compressed air
10305-3 or XPress Stainless fittings with stainless steel tube which fulfill EN10312 pipeline systems must be properly tested. The
XPress Carbon fittings with zinc plated precision carbon steel tubes can be used for system designer and installation contractor must
compressed air if following conditions are observed: ensure safe methods are selected for system
3
Water contents: Max. 880 mg/m , class 3, ISO 8573 part 1 testing which will comply with all current health
3
Oil contents: Greater than 25 mg/m , class 5, ISO 8573 part 1 and safety regulations. This may include testing
When exceeding the maximum water content then copper or stainless steel should compressed air lines with fluids or compressed
be used. air at a limited pressure, or a combination of
O-rings: Viton (green) can only be used for synthetic oil or dry compressed air both.
(exceeding 25 mg/m ). After the installation the compressed air
3
Operating temperature(*): -20 to +200°C installation should be pressure tested according
Operating pressure: Max 16bar 12 to 54mm. Max 10bar 66.7 to 108mm. the valid local guide lines. In any event we do
(*) For short time exposure, refer to the exposure table page 135. not recommend the maximum working pressure
of the product to be exceeded during this
XPress Carbon fittings with XPress carbon tubes which fulfill EN 10305-3. procedure.
XPress stainless Steel fittings with XPress stainless steel tubes which fulfill EN 10312.

O RING COMPATIBILITY CHART Black Yellow Green
XPress fittings use the same O Ring technology to provide the best Designation EPDM - XPress HNBR Gas FPM Solar
and widest range of heat free jointing systems. It is important to check Fluids Resistance
compatibility between the O Ring and the fluid in the system. The
table below is a guide for the contractor, installer and specifier, and Acid
shows the compatibility of three O Ring materials with common fluid Acetic 10% P P P P P
types and some gases. Formic P P P x P
EPDM - Ethylene Propylene Diene Monomer - This is the standard, Hydrochloric 20% P P P P P P
black O Ring that is used in XPress ranges.
Nitric 30% P P P x P P
HNBR - Hydrogenated Nitrile Rubber - This is the yellow O Ring that is Phosphoric 20% † P P P P P P
only used in XPress Gas.
Sulphuric 30% † P x P P
FPM - Fluorocarbon Rubber - This is the green O Ring that is only used Alkalis
in XPress Solar.
Barium hydroxide P P P P P P P P
These tables refer to room temperature test. The performance of
O Rings is influenced by the type of system, transported medium, Calcium hydroxide P P P P P P P P
temperature range, pressure range and external factors. This table is Sodium hydroxide P P P P P P P
provided as a general guide, however, for specific queries concerning Alcohols
compatibility we suggest you contact the Pegler Yorkshire technical Butyl alcohol (Butanol) P P P P P P P P
department.
Ethyl alcohol (Ethanol) P P P P P P
Methyl alcohol (Methanol) P P P P P P
Black Yellow Green Amines
Designation EPDM - XPress HNBR Gas FPM Solar Ethylene diamine P P P P P x
Maximum service temperature °C 180 100 230 Ammonia – cold gas P P P P P P x
Low service temperature °C -50 -20 -20 Ammonia – hot gas P P x x
Water/Steam Resistance Chlorides
Water/Steam resistance <40°C P P P P P P P P P Ammonium chloride P P P P P P P P P
Water/Steam resistance <80°C P P P P P P P P Calcium chloride solution P P P P P P P P P
Water/Steam resistance <150°C P P x P P Magnesium chloride P P P P P P P P P
Water/Steam resistance >150°C P x P P Zinc chloride P P P P P P P P P

134