Product Overview

Heating & Cooling

Components for today’s modern hydronic systems

DISCAL

551 SERIES

MICRO-BUBBLE AIR SEPARATORS

PRODUCT FEATURES

High performance, long-lasting air elimination

Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and

sediment formation. The Calefﬁ DISCAL

micro-bubble coalescing air separator with high discharge

capacity and unique chamber design, automatically and efﬁciently rids system gasses. A very robust

design and 100% anti-corrosion components enable DISCAL

to provide a long, trouble free life.

 Anti-rotation/anti-vibration pinned oat:

Creates space between ﬂoat and air vent

wall to prevent ﬂoat hang-up from debris or

variations in separator installation orientation.

Large-diameter chamber:

Slows ﬂuid ﬂow dramatically. Combines with

concentric, sharp-edged mesh design to cause

micro-bubbles to efﬁciently collect and coalesce.

Highly effective automatic air elimination.

Anti-corrosion coalescing mesh:

Constructed of glass-ﬁlled nylon. More

resistant to dissolved oxygen and acidic

ﬂuids than plated metals.

Robust stainless steel oat linkages:

Reliable ﬂoat alignment even during turbulent

conditions such as ﬁlling from bottom.

Corrosion resistant:

All components highly resistant to hydronic

chemical additives or unstable pH ﬂuid.

Optional service check valve:

Allows expansion tank removal without purging

system.

PAGE 1
551 SERIES DISCAL® MICRO-BUBBLE AIR SEPARATORS Heating & Cooling Components for today’s modern hydronic systems PRODUCT FEATURES  Anti-rotation/anti-vibration pinned float: Creates space between float and air vent wall to prevent float hang-up from debris or variations in separator installation orientation.  Large-diameter chamber: Slows fluid flow dramatically. Combines with concentric, sharp-edged mesh design to cause micro-bubbles to efficiently collect and coalesce.
PAGE 2
PRODUCT RANGE - DISCAL® CODE SIZES MAX. FLOW RATE: (GPM)* NPT SWEAT PRESS NPT COMPACT** SWEAT COMPACT** ¾” 6 551005A(C) -- -- 551003A(C) 551022A(C) 1” 10 551006A(C) 551028A(C) 551066A(C) -- -- 1¼” 15 551007A(C) 551035A(C) 551067A(C) -- -- 1½” 22 551008A(C) 551041A(C) 551068A(C) -- -- 2” 39 551009A(C) 551054A(C) 551069A(C) -- -- *4 feet per second fluid velocity. **SST mesh. (C) automatic ½” service check valve included. PERFORMANCE APPLICATION DIAGRAM MAX.