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Cross Reference for Competitive Models
Model Type/Description
DISCAL Air Separators - Brass - Compact
3/4" NPT Female 551003A VJR075TM PV075 49-075T-1 VRTX075
3/4" Sweat 551022A VJS075FT PV075S 49-075C-1 —
DISCAL Air Separators - Brass - NPT
3/4" 551005A VJR075TM PV075 49-075T-1 VRTX075
1" 551006A VJR100TM PV100 49-100T-1 VRTX100
1-1/4" 551007A VJR125TM PV125 49-125T-1 VRTX125
1-1/2" 551008A VJR150TM PV150 49-150T-1 VRTX150
2" 551009A VJR200TM PV200 49-200T-1 VRTX200
DISCAL Air Separators - Brass - Sweat
1" 551028A VJS100TM PV100S 49-100C-1 —
1-1/4" 551035A VJS125TM PV125S 49-125C-1 —
1-1/2" 551041A ——49-150C-1 —
2" 551054A —— ——
Feature Comparison
Model Type/Description
Caleffi
DISCAL
B
ody Material Brass Brass Brass Brass Cast Iron Brass is ideal for hydronic heating systems because it is
not susceptible to corrosion.
Coalescing Medium Type Reinforced Copper SST Wire Brush SST Pall Ring NA Noncorrosive. Anti-electrolysis materials are resistant to
N
ylon Mesh,* Woven Wire oxygen and acidic boiler water. Impervious to galvanic
Angular dielectric corrosion.
D
iamond Pattern
F
loat Guide Pins Yes No No No Yes No jamming of float due to nonvertical installation or boiler
residue buildup.
Temperature Rating to 250ºF Yes Yes No No No Handles high-temperature hydronic systems.
Float Linkage Construction SST Pinned SST Steel SST SST Noncorroding, reliable float alignment with robust linkage
L
inkages and lever mechanism.
L
ong Float Chamber (Large “Air Cushion”) Yes Yes No No Yes Prevents debris from reaching the sealing seat of automatic
air release valve.
Spring-Operated Automatic Air Venting Yes No No No No Reliable positive shutoff. Nonclogging vent eliminates
M
echanism With Straight Motion callbacks due to fouling of air valve.
A
ccess to Air Venting Moving Parts From Top Yes No Yes No Yes The moving parts that control the air venting are accessed
simply by removing the upper cover.
Coalescing Medium Locked in Place Yes Yes No No Yes Coalescing medium will not move out of the system flow
d
uring maintenance. Tight-fitting medium minimizes vibration
a
nd noise.
E
nd Connections NPT & SWT NPT & SWT NPT & SWT NPT & SWT NPT only Application installation flexibility.
Size Range 3/4 - 2" NPT
3/4 - 1-1/2" NPT 3/4 - 1-1/2" NPT 3/4 - 2" NPT 3/4 - 2" NPT Application installation flexibility. Exclusive 2" Sweat connections.
3
/4 - 2" Sweat
1
- 1-1/4" SWT 3/4 - 1-1/4" SWT
3
/4 - 1-1/2" SWT
Bidirectional Flow Yes Yes Yes No Yes Easier retrofit installation.
T
he Caleffi Advantage
SS102.1 ©Copyright 2011 Caleffi North America, Inc.
DISCAL –
High-Performance, Long-Lasting Air Elimination
Caleffi
DISCAL
Spirotherm
S
pirovent Jr.
H
oneywell
(Sparco)
S
upervent
T
aco 4900 Taco Vortech
Also available in sizes 2"- 6".
Threaded and Flanged, ASME Registered.
* 3/4" Compact is Stainless Steel.
Taco VortechTaco 4900
Honeywell
(Sparco)
Supervent
Spirotherm
Spirovent Jr.
I N N O V A T I V E • H Y D R O N I C • S O L U T I O N S
Caleffi North America, Inc.
3883 W. Milwaukee Rd., Milwaukee, WI 53208
Tel: [phone], Fax: [phone]
For detailed specifications, visit us at: www.caleffi.us
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