PROPERTY/PERFORMANCE
|
VINYL ESTER/ FRP
|
PHENOLIC
|
CORROSION RESISTANT
INSIDE DUCT
|
15 YEARS IN
SEMICONDUCTER ACID
SERVICE – NO PROBLEMS
|
MUST BE PROTECTED BY VINYL ESTER LINER
|
CORROSION RESISTANT
OUTSIDE DUCT
|
EXCELLENT – CAN BE USED
OUTSIDE WITH NO PROBLEMS
|
POOR – ATTACKED BY WATER
MOISTURE
|
LINER THICKNESS FOR
CORROSION RESISTANCE
|
USUALLY 100-126 MILS MEETS BOTH ASTM AND ICBO REGULATIONS
|
IN NON-SPRINKLERED CONDITION – LIMITED BY LISTING TO 50 MILS, ASTM REQUIRES MINIMUM OF 96 MILS
|
DIAMETER CAPABILITY
|
UNLIMITED MANY CASE HISTORIES UP TO 120” DIAMETER
|
LIMITED TO 60” FOR NON-SPRINKLERED BY LISTING SERVICES
|
VERTICAL
|
UNLIMITED
|
LIMITED TO 15-30‘ FOR NON-SPRINKLERED BY LISTING SERVICES
|
UNSPRINKLERED FIRE RATING
|
15 FLAME SPREAD – 30 SMOKE BY ASTM E-84 TEST
|
6 FLAME SPREAD – 10 SMOKE
|
FIRE RATING SPRINKLERED
|
FM APPROVED – FIRES
EXTINGUISHED IMMEDIATELY
|
NOT USED SPRINKLERED – LINER CAN BURN AND PRODUCE UP TO 500 SMOKE, CAN BURN THROUGH OUT TO SCRUBBERS. COMPLETE SECTION OF DUCT MUST BE REPLACED
|
CORROSION AND FIRE
PERFORMANCE
|
UNMATCHED WHEN SPRINKLERED – USE OF FLEXHEAD SPRINKLER SYSTEMS DRASTICALLY REDUCES MAINTENANCE AND INSPECTION REQUIREMENT
|
TO MATCH VE/FRP LINER MUST BE INCREASED TO 100 MILS – ACCORDING TO LISTING WITH THIS LINER THICKNESS DUCT MUST BE SPRINKLERED
|
COST
|
LOWER COST INSTALLED THAN NON-SPRINKLER PHENOLIC, CAN BE PRODUCED ANYWHERE
|
30-40% HIGHER COST THAN
SPRINKLERED VE/FRP, CAN ONLY BE PRODUCED IN WESTERN U.S.
|
JOINTS AND REPAIRS
|
NOW AVAILABLE WITH COMPANION NO VOC VINYL ESTER THAT GIVES JOINT SAME CR/FR PROPERTIES
|
USES CHEMBOND SYSTEM THAT MAY BE A PROBLEM FOR WORKERS ON INHALATION AND/ OR CONTACT, CAN ONLY BE USED FOR FUME EXHAUST
|
FLAMMABLE RESIDUES PRESENT
|
|
MUST BE SPRINKLERED IF
FLAMMABLE RESIDUES ARE
POSSIBLE
|
MECHANICAL PROPERTIES
|
GREAT RESISTANCE TO CRACKING/ CRACKS FIXED EASILY WITH SECONDARY BONDING
|
LOW TENSILE ELONGATION EASILY CRACKED DUE TO BRITTLENESS POOR ON SECONDARY BONDING |
