Product Overview

ManualsBrandsCaleffi ManualsAir Eliminators1" NPT 5461 Series DIRTMAG Dirt Separator with Magnet

CALEFFI

01287/17 NA

Function

The Calefﬁ DISCALDIRTMAG

magnetic air and dirt separator incorpo-

rates three important functions for hydronic systems: air separation, dirt

separation and ferrous impurity separation. An internal screen element

facilitates the coalescing and capture of micro-bubbles to facilitate high

performance automatic air removal, while concurrently causing the cap-

ture of non-ferrous debris particles down to 5 micron size. A powerful

magnetic ﬁeld induced by rare-earth neodymium magnets facilitates the

capture of ferrous impurities such as iron oxide down to microscopic size

thus delivering 2½ times the ferrous impurity removal performance of

standard air and dirt separators.

The DISCALDIRTMAG

saves on system installation and maintenance

costs as three devices are combined into one. Additionally, all captured

debris is blown down through the purge valve without taking the system

ofﬂine.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

DISCALDIRTMAG

ISO 9001 No. 0003

ACCREDITED

ISO 9001 FM 21654

Product range

5461 series DISCALDIRTMAG

air and dirt separator with magnet in brass.......................................connections ¾", 1", 1¼" sweat, 1" NPT male

5461 series DISCALDIRTMAG

air and dirt separator with magnet in steel..................connections 1½" and 2" sweat, NPT female and press union

NA546_M series DISCALDIRTMAG

air and dirt separator with magnet in steel, ASME.............connections 2½" to 14" ANSI ﬂanged, 2" NPT threaded

-CRN approval for 2” – 8” sizes; consult factory for 10-14" sizes.

Technical specications

Brass body magnetic 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

- magnet: neodymium rare-earth

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)

Ferrous impurities separation efﬁciency: up to 100% removal

Connections - main: ¾", 1", 1¼" sweat; 1" NPT male

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

Steel body magnetic air and dirt separators

Materials - body: epoxy resin coated steel

- air vent body: brass

- mesh internal element:

(NA546_M) stainless steel

(5461) 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

- magnet: neodymium rare-earth

- magnet probe drywell (M series): brass

Performance

Suitable ﬂuids: water, glycol solution

Max. percentage of glycol: 50%

Max. working pressure: 150 psi (10 bar)

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

(5461 series:): 32-230°F (0–110°C)

Air separation efﬁciency: 100% removal to microbubble level

Particle separation capacity: to 5 µm (0.2 mil)

Ferrous impurities separation efﬁciency: up to 100% removal

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

- threaded: (M series) 2" NPT male

(5461) 1½" & 2" NPT female union

- sweat: (5461) 1½" & 2" sweat union

- press: (5461) 1½" & 2" press union

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

8"–14": 2" NPT female

5461 series: ¾" garden hose connection

- side drain shut-off valve (NA546_M only): ¾" GHT

- thermo well tap (8 " only):

-inlet/outlet ﬂanges: ½" NPT female

- lay length (press connection): size 1½ inch: 11 ¾"

size 2 inch: 12

/8"

Agency approval

NA546_M 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

Inspector, and CRN registered, stamped for 150 psi (10 bar) work-

ing pressure, with ASME U stamp. 10"-14" is CRN pending, consult

Calefﬁ.

DISCAL

magnetic air and dirt separator

5461–NA546_M series

Summary of content (8 pages)

PAGE 1
DISCAL magnetic air and dirt separator ® CALEFFI 5461–NA546_M series 01287/17 NA ACCREDITED ISO 9001 FM 21654 ISO 9001 No. 0003 Function The Caleffi DISCALDIRTMAG® magnetic air and dirt separator incorporates three important functions for hydronic systems: air separation, dirt separation and ferrous impurity separation.
PAGE 2
Dimensions B B 0 2 1/8” B C C F E 10” 8 5/8” 0 2 1/8” 0 4 ½” C C A D 38552 38552 D D F 3 1/8” F 0 5 ½” 10 11/16” 11 ¼” 3 1/8” A A A 0 5 ½” F E B 8 5/8” A 546198A B 1½" sweat 11 ¼" 1½" NPT female 11 1/8" 5/8" Flow (gpm) 22 15 Sweat ¾" 7 3/8" 2 1/8" 5" 5½" 12¾" 8.5 3.9 3/8" 2 1/8" 5" 5½" 12¾" 8.5 3.9 6 3⁄16" 2 1/8" 5" 5½" 12¾" 8.5 3.9 3/8" 2 1/8" 5" 5½" 12¾" 8.5 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 glassreinforced nylon mesh for the brass DISCALDIRTMAG®, or for the steel DISCALDIRTMAG® an assembly of concentric metal mesh (stainless steel) surfaces. These elements create the whirling movement required to facilitate the release of microbubbles and their adhesion to these surfaces.
PAGE 5
Brass DISCALDIRTMAG® Construction details The DISCALDIRTMAG® 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 1 the seal seat. The corrosion resistant stainless steel pinned linkage and PP float can be accessed by removing the upper cover (1).
PAGE 6
Particle separation rating – dirt separator efficiency Separation efficiency The capacity for separating the impurities in the medium circulating in the closed circuits of the systems basically depends on three parameters: Efficiency (%) ( Separated quantity Initial quantity 100 Efficiency 50 passages (0.5 m/s) .100%) Efficiency 50 passages (1 m/s) 1) It increases as the size and mass of the particle increase. The larger and heavier particles drop before the lighter ones.
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 17.6 19.8 1250 1388 22.0 15.4 1111 7.9 500 0.2 13.2 7.045 444 0.5 0.18 0.16 0.14 0.12 972 5.3 6.15 389 278 4.4 333 3.5 3.0 194 139 2.2 3.96 167 250 2.6 125 222 1.5 1.7 1.98 111 1.3 97 1.1 83 0.88 1 0.45 0.4 0.35 0.3 0.25 DISCALDIRT®/ DISCALDIRTMAG® curve 3/4”– Cv =19 0.053 0.047 0.040 2 0.1 (PSI) 1.3 1.2 1.0 0.9 0.
PAGE 8
Installation DISCALDIRTMAG® 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. DISCALDIRTMAG® air and dirt separators must be installed vertically.