Brochure

C O R P O R A T I O N
R
20 New Dutch Lane, Faireld, NJ 07004 973-575-4004 • Fax [phone] • http://www.heat-timer.com
056082-00 REV C
VARIVALVE
®
Steam Radiator Vents
It’s All in the Venting
Large Variable Orice
• Allowsadjustmentupto5/16”.
MakesradiatorsheatupFAST(when
required).
• Simpliesbalancingofsystemsby
providingthefastestheatforhard-to-
heatroomsandallowingreductionof
heattooverheatedareas
• Forlow-pressureonepipesteam
heatingsystems.
Heavy Duty Construction
and Contemporary Styling
• Solidbrasscasewithheavychrome
plating:availableinstraightorangle
shank.VARIVALVE
®
istherstvalve
thatlooksasgoodasitworks.
Phosphorus Bronze Bellows
• Insurespositiveshutoff!Quiet
operation!Noclickingorhissing.
• Outlastsbimetalair-vents.
High Temperature
O-Ring Seal
• Forpositivesealing.
Seat and Puppet at
Inlet to Valve
• Steamorcondensationdoes
notentervalvebody.
#4 #5
0.00 0.08 0.16 0.720.24 0.32 0.40 0.48 0.56 0.64 0.00
#6 #C #D
#2
#40 #41
GORTON
FLAIR #101
(4 Settings)
HOFFMAN
(#1A)
HOFFMAN
Heat-Timer
VARIVALVE
®
FIGURE 1 - RADIATOR AIR VENT COMPARISON
This is a comparison of the radiator air vents tested. This figure is also based on a gauge pressure
of 1” W.C. and once again the relative positions do not change up to a pressure of 28” W.C.
FLOW RATE (CFM)
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
4A #75
#2
HOFFMAN
GORTON
Heat-Timer
VARIVALVE
®
FIGURE 2 - MAIN LINE AIR VENT COMPARISON
This comparison is based on a gauge pressure of 1” W.C.
The results at 1” W.C. were chosen as most representative
of actual operating conditions. The relative positions of the
vents do not change significantly up to a pressure of 28” W.C.
FLOW RATE (CFM)
Laboratory Results
• All studies and tests were conducted by an independent
testing lab. Heat-Timer Corp. DID NOT technically or
nancially subsidize these studies.
Laboratory Results
• All studies and tests were conducted by an independent
testing lab. Heat-Timer Corp. DID NOT technically or
nancially subsidize these studies.
ISO 9001:2000
CERTIFIED