Product Overview

ManualsBrandsCaleffi ManualsAir Eliminators1" NPT Male 546 Series DISCALDIRT Air & Dirt Separator

CALEFFI

DISCAL

air and dirt separator

546 series

01123/16 NA

Function

Air and dirt separators are used to continuously remove the air and

debris contained in the hydronic circuits of heating and cooling systems. The

air discharge of these devices is very high. They are capable of automatically

removing all of the air present in the system down to the microbubble level. The

DISCALDIRT

air and dirt separator also removes any solid impurities in the

system. The impurities collect at the bottom of the device and can be ﬂushed

through the integal drain shut-off valve. The circulation of fully de-aerated and

cleaned water enables the equipment to operate under optimum conditions,

free from noise, corrosion, or mechanical damage.

Insulation shells are available separately for field installation on the brass

DISCALDIRT

Replaces 01123/15 NA

ISO 9001 No. 0003

ACCREDITED

ISO 9001 FM 21654

Product range

54609 series DISCALDIRT

air and dirt separator in brass..............................................................................................connections 1", 1-¼" sweat

546016A DISCALDIRT

air and dirt separator in brass...................................................................................................connection 1" NPT male

546 series DISCALDIRT

air and dirt separator in steel.........................................................................................connections 2"-6" ANSI ﬂanged

NA546 series DISCALDIRT

air and dirt separator in steel, ASME & CRN.........................................................connections 2-½" to 14" ANSI ﬂanged

NA546050T DISCALDIRT

air and dirt separator in steel, ASME & CRN......................................................................connections 2" NPT threaded

Technical specications

Brass body air and dirt separators

Materials - body: brass

- dirt separation chamber: brass

- air vent body: brass

- internal element: glass reinforced nylon, PA66GF30

- air vent ﬂoat: PP

- air vent ﬂoat guide pin: stainless steel

- air vent ﬂoat linkages: stainless steel

- spring: stainless steel

- seals: EPDM

- bottom drain shut-off valve: brass

Performance

Suitable ﬂuids: water, glycol solution

Max. percentage of glycol: 50%

Max. working pressure: 150 psi (10 bar)

Temperature range: 32–250°F (0–120°C)

Air separation efﬁciency: 100% removal to microbubble level

Particle separation capacity: to 5 µm (0.2 mil)

Connections - main: 1", 1-¼" sweat; 1" NPT male

- drain shut-off valve: ¾" garden hose (GHT)

Steel body air and dirt separators

Materials - body: epoxy resin painted steel

- air vent body: brass

- mesh internal element: stainless steel

- air vent ﬂoat: PP

- air vent ﬂoat guide pin: stainless steel

- air vent ﬂoat linkages: stainless steel

- spring: stainless steel

- seals: EPDM

- bottom drain shut-off valve: brass

- side drain shut-off valve: brass

Performance

Suitable ﬂuids: water, glycol solution

Max. percentage of glycol: 50%

Max. working pressure: 150 psi (10 bar)

Temperature range (vessel): 32–270°F (0–132°C)

Air separation efﬁciency: 100% removal to microbubble level

Particle separation capacity: to 5 µm (0.2 mil)

Connections - ﬂanged: 2½"–14" ANSI B16.5 150 CLASS RF

- threaded: 2" NPT male

- bottom drain valve: sizes 2 – 6 inch: 1" NPT female

sizes 8 - 14 inch: 2" NPT female

- side drain shut-off valve: ¾" GHT

Agency approval

NA546 series designed and built in accordance with Section VIII,

Division 1 of the ASME Boiler and Pressure Vessel Code and tagged,

registered with the National Board of Boiler and Pressure Vessel

Inspectors, stamped for 150 psi (10 bar) working pressure, with

ASME U stamp, CRN registered. 14" is CRN pending, consult Calefﬁ.

Summary of content (8 pages)

PAGE 1
DISCAL ® air and dirt separator CALEFFI 546 series 01123/16 NA ACCREDITED ISO 9001 FM 21654 ISO 9001 No. 0003 Replaces 01123/15 NA Function Air and dirt separators are used to continuously remove the air and debris contained in the hydronic circuits of heating and cooling systems. The air discharge of these devices is very high. They are capable of automatically removing all of the air present in the system down to the microbubble level.
PAGE 2
Dimensions B F C C B B C B C F C F 1/8 C ” 3 1/8” 3 1/8 ” D EE E F AA A F H D HH D A F D D D F F A A A 38552 A 38552 D 38552 E E E E D E C 3 C B NA546_M G B G B NA546M G B NA546M Code Connections A B C D E F Wt. (lb) Wt. (kg) 546096A Sweat 1" 3 7 ⁄8" 1 2 ⁄8" 5" 1 5 ⁄2" 3 12 ⁄4" 8.3 3.8 546016A NPT male 1" 7 3⁄8" 2 1⁄8" 5" 51⁄2" 12 3⁄4" 8.3 3.8 546097A Sweat 11⁄4" 6 3⁄16" 2 1⁄8" 5" 51⁄2" 12 3⁄4" 8.3 3.
PAGE 3
The process of air formation The amount of air which can remain dissolved in a water solution is a function of pressure and temperature. This relationship is governed by Henry’s law and the graph demonstrates the physical phenomenon of the air release from water. As an example, at a constant absolute pressure of 30 psi (2 bar), if the water is heated from 65ºF (18ºC) to 170ºF (75ºC), the amount of air released by the solution is equal to 1.8 gallons of air per 100 gallons of water.
PAGE 4
Operating principle Microbubble air separation The air and dirt separator uses the combined action of several physical principles. The active part is the internal element (1) and consists of a glass-reinforced nylon mesh for the brass DISCALDIRT ® or for the steel DISCALDIRT ® an assembly of concentric metal mesh (stainless steel) surfaces. These elements create the whirling movement required to facilitate the release of micro-bubbles and their adhesion to these surfaces.
PAGE 5
3 3 4 4 3 4 Construction details The DISCALDIRT ® air and dirt separator is designed to be maintained and cleaned without removing it from system piping. The automatic air vent, located at the top of the device, has a long chamber for float movement (2). This prevents any impurities in the water from reaching the seal seat. The corrosion resistant stainless steel pinned linkage and PP float can be accessed by removing the upper cover (1).
PAGE 6
14” 8” 10” 12” 6” 5” 3” 4” (ft of water) 2 1/2” 2” 1” ΔP (ft of water) 2 1 1/4” Hydraulic characteristics (kPa) 2 1.8 1.6 1.4 6 1.8 1.6 1.4 1.2 1.2 1 1 0.9 0.8 0.7 5 4.5 4 3.5 3 0.9 0.8 0.7 2.5 2 0.6 0.6 0.5 0.5 0.3 0.3 0.45 0.4 0.35 1.8 1.6 1.4 0.45 0.4 0.35 0.25 0.25 0.2 0.2 0.18 0.16 0.14 1.2 1 0.9 0.8 0.7 0.6 0.18 0.16 0.14 0.12 0.12 0.1 0.1 0.09 0.08 0.07 0.5 0.45 0.4 0.35 0.3 0.09 0.08 0.07 0.25 0.2 0.06 0.06 0.05 0.05 0.035 0.03 0.035 0.
PAGE 7
Comparison of head losses: air and dirt separator to Y-strainers 5 3 2.5 0.60 0.53 0.47 0.40 1.8 1.6 1.4 1.2 0.30 0.27 0.23 0.20 0.9 0.8 0.7 0.6 31.0 35.0 2.2 2.5 39.0 27.0 1.96 1.11 0.2 23.0 17.6 0.97 0.5 0.18 0.16 0.14 0.12 1.7 13.2 15.4 0.83 7.9 11.0 8.8 0.5 0.56 0.70 5.3 6.15 7.045 0.44 0.28 4.4 0.39 0.25 0.33 3.0 3.5 3.96 0.22 2.6 0.19 2.2 0.16 1.98 1 0.45 0.4 0.35 0.3 0.25 DISCALDIRT® curve 1”– Cv =32 0.053 0.047 0.040 2 0.1 (PSI) 1.3 1.2 1.0 0.9 0.
PAGE 8
Installation DISCALDIRT ® units may be used in both heating and cooling systems, to ensure continuous air and dirt elimination. The units should be installed after the boiler and on the pump suction side, as these are the points where the formation of micro-bubbles is greatest. DISCALDIRT ® air and dirt separators must be installed vertically.