Submittal Form

Submittal Data 02906 NA - Issue Date 01/2010
551 Steel Series
Discal
TM
Air Separator
Caleffi North America, Inc. 3883 West Milwaukee Road / Milwaukee, WI 53208
Tel: [phone] / Fax: [phone] / www.caleffi.us © Copyright 2010 Caleffi
Size _________________________________
Quantity ______________________________
Approval ______________________________
Service _________________________________
Tag No. _________________________________
Notes _________________________________
Job name ______________________________
Job location ______________________________
Engineer ______________________________
Mechanical contractor ________________________
Contractor’s P.O. No. ________________________
Representative ________________________
We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice. Contractors should request production drawings if prefabricating the system.
CA L E FF I
Code A B C D E F Weight (lb) (kg)
551050A 2" 13 3/4" 14 3/4" 19 15/16" 1" 6 5/8" 33.1 15.0
551060A 2 1/2" 13 3/4" 14 3/4" 19 15/16" 1" 6 5/8" 34.2 15.5
551080A 3" 18 3/8" 17 1/8" 23 7/16" 1" 8 5/8" 61.7 28.0
551100A 4" 18 1/2" 17 1/8" 23 7/16" 1" 8 5/8" 66.1 30.0
551120A 5" 25" 21 7/16" 30 1/2" 1" 12 3/4" 105.8 48.0
551150A 6" 25" 21 7/16" 30 1/2" 1" 12 3/4" 116.8 53.0
Dimensions
Flow capacity
The fluid velocity at connections for Discal 551 series air
separators is recommended to not exceed 10.0 f/s. Above this
speed, heavy internal turbulance and noise can occur and air
elimination efficency begins to fall measurably. Optimal air
elimination performance occurs at fluid velocities of 4.0 f/s or
less. See the flow capacity chart.
Size 2" 2 1/2" 3" 4" 5" 6"
Cap. (gal) 1.8 1.8 4.8 4.8 13.7 13.7
Cap. (l) 7.0 7.0 18.0 18.0 52.0 52.0
Technical Data
Materials:
- Body: epoxy resin painted steel
- Coalescing Medium: stainless steel
- Seal: EPDM
Suitable fluids: water, with up to a 50% glycol solution
Max working pressure: 150 psi (10 bar)
Temperature range: 32–250°F (0–120°C)
Connections:
- Flanged: 2” – 6” ANSI B16.5 Class 150 RF
- Blowdown: 1” NPT male
Typical Specification
Furnish and install on the plans and described herein, a Caleffi Discal Air Separator as
manufactured by Caleffi. Each separator must be designed with a blowdown drain port, side
drain valve and automatic air vent. The separator design must include a stainless steel
coalescing medium to automatically remove all air present in the system. Each separator
shall be a Caleffi model 551 or approved equal. (See product instructions for specific
installation information.)
Application
Air separators are used to continuously remove the air contained in the hydronic circuits of
heating and cooling systems. The air discharge capacity of these devices is very high.
They are capable of automatically removing all the air present in the system, down to the
micro-bubble level. The circulation of fully de-aerated water enables the equipment to
operate under optimum conditions, free from any noise, corrosion, localized overheating and
mechanical damage.