DuraVent DuraSeal DS Manual page 35

DS Test Port Lengths
Ø (in.) Effective Length (in.)
3 to 24
Drain Ø4 – Ø24, 1/4 NPT, 1/2 0.D
Figure 100
DS Drain Length
Ø (in.) Effective Length (in.)
3 to 24 6-1/2
Drain Ø4 – Ø10, 1/4 NPT, 1/2 0.D
Drain Ø12 – Ø24, 1/2 NPT, 5/8 0.D
Figure 101
DS Damper Lengths
Ø (in.) Effective Length (in.)
3 to 24 15-1/2
Figure 102
Effective
length
1
Ø
Product Code
6-1/2 DSØTPL
Effective
Ø
Product Code K Factor
DSØDL 0.25
Plate for
actuator
Effective
Ø
Product Code K Factor
DSØDAMP 0.60 to 9999
Cross Section View
Ø (in.) Effective Length (in.)
3 to 24
Figure 103
length
1
Ø (in.) Effective Length (in.)
3 to 24
Figure 104
Cross Section View
length
Ø (in.)
3 to 24
For use on Cat. I and II boilers only
Figure 105
6-1/2
1-11/16
DS Damper Length Short Manual
Product Code
6-1/2 DSØDAMPS
7-1/2
3-3/8
DS Damper Length Short
Product Code
7-1/8 DSØVFR
7-1/2
3-3/8
DS Vent Flow Regulator Damper Blade
Ø
K Factor
0 to 9999
Ø
K Factor
0 to 9999
Ø
Product Code
DSØVFN
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