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Type B - Mini-Split Twin Tube

Liquid and vapor lines joined inside a single insulated run. For mini-split systems.

Type B mini-split twin tube line set, white insulation
Type B mini-split twin tube line set, black insulation

About this configuration

Type B joins the liquid and vapor lines inside one insulated jacket, so the pair feeds through a wall penetration or conduit as a single run. It is the standard set for mini-split installations, and the twinned construction keeps the two lines together and correctly spaced through the pull.

Supplied in 1/2 in insulation, black or white, with plain or flared ends, in lengths to 164 ft.

Specifications

Insulation
Fire retardant insulation layer
Abrasion resistance
Embossed polyethylene film
External layer
Non-toxic, chemical resistant, and UV resistant
Working temperature
-40 °F to 248 °F
R-value
1/2" = R3.3
5/8" = R5.2
Tube material
Copper
Ends
Plain or flared
Insulation color
Black or white

Part numbers - 1/2 in insulation

Part numbers listed are for black insulation. For the same item in white, drop the BLK.
Liquid x Vapor (in)Length (ft)Plain EndsFlared Ends
1/4 x 3/815B143812015BLKB143812015BLKF
1/4 x 3/825B143812025BLKB143812025BLKF
1/4 x 3/830B143812030BLKB143812030BLKF
1/4 x 3/835B143812035BLKB143812035BLKF
1/4 x 3/840B143812040BLKB143812040BLKF
1/4 x 3/850B143812050BLKB143812050BLKF
1/4 x 3/865B143812065BLKB143812065BLKF
1/4 x 3/8100B143812100BLKB143812100BLKF
1/4 x 3/8164B143812164BLKB143812164BLKF
1/4 x 1/215B141212015BLKB141212015BLKF
1/4 x 1/225B141212025BLKB141212025BLKF
1/4 x 1/230B141212030BLKB141212030BLKF
1/4 x 1/235B141212035BLKB141212035BLKF
1/4 x 1/240B141212040BLKB141212040BLKF
1/4 x 1/250B141212050BLKB141212050BLKF
1/4 x 1/265B141212065BLKB141212065BLKF
1/4 x 1/2100B141212100BLKB141212100BLKF
1/4 x 1/2164B141212164BLKB141212164BLKF
1/4 x 5/815B145812015BLKB145812015BLKF
1/4 x 5/825B145812025BLKB145812025BLKF
1/4 x 5/830B145812030BLKB145812030BLKF
1/4 x 5/835B145812035BLKB145812035BLKF
1/4 x 5/840B145812040BLKB145812040BLKF
1/4 x 5/850B145812050BLKB145812050BLKF
1/4 x 5/865B145812065BLKB145812065BLKF
1/4 x 5/8100B145812100BLKB145812100BLKF
1/4 x 5/8164B145812164BLKB145812164BLKF
3/8 x 5/815B385812015BLKB385812015BLKF
3/8 x 5/825B385812025BLKB385812025BLKF
3/8 x 5/830B385812030BLKB385812030BLKF
3/8 x 5/835B385812035BLKB385812035BLKF
3/8 x 5/840B385812040BLKB385812040BLKF
3/8 x 5/850B385812050BLKB385812050BLKF
3/8 x 5/865B385812065BLKB385812065BLKF
3/8 x 5/8100B385812100BLKB385812100BLKF
3/8 x 5/8164B385812164BLKB385812164BLKF

Matching tube size to system capacity

Typical pairings. Confirm against the equipment manufacturer's requirements for the specific system being installed.
Tube Size (in)Air Conditioner Capacity
1/4 and 3/89,000 BTU
1/4 and 1/212,000 and 18,000 BTU
1/4 and 5/824,000 and 28,000 BTU
3/8 and 5/836,000 BTU inverter

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