Mine Ventilation Ducting — Reliable Solutions By Plascorp

When it comes to mine ventilation ducting, it is imperative that the underground ventilation system is of the highest quality to guarantee maximum effectiveness and safety — and rest assured that that is exactly what you will be getting when you choose Plascorp.

At Plascorp, our mining products are constructed from polyethylene woven coated fabric or polyester coated PVC. Our manufacturing process incorporates our patented process stitchweld mineflat. This innovation gives vastly reduced air loss by way of top and bottom welded seams. In addition to inventory rationalisation.

Our stitchweld product has demonstrated a longer life span by eliminating weldtear and delamination, which is what has seen our product become the go-to and used in mines all over the world. Plascorp can supply you all your ventilation needs, to installing a new ventilation system for underground mining or industrial applications. For the most reliable underground ventilation system possible, make Plascorp your next choice.

MINEFLAT

Based on field tests, Mineflat delivers more airflow for a given length of ducting due
to a lower leakage coefficient because of our patented stitch-weld process. Mineflat
is colour coded based on the diameter of the duct to easily identify sizing.

All sizes available in 5, 10 and 20m lengths with some also available in 50m. The joining
mechanism is the skirt connecting method consisting of eyelets and a skirt enabling
connection with Mineflex, hook and loop fasteners and even zippers. Discuss with your
Sales Representative for your joining needs.

D1 (mm) L1 (m) L1 (m) L1 (m) L1 (m)
305 5 10 20
355 5 10 20
406 5 10 20
457 5 10 20
508 5 10 20
572 5 10 20
610 5 10 20
762 5 10 20
810 5 10 20
910 5 10 20 50
1067 5 10 20 50
1220 5 10 20 50
1400 5 10 20 50

MINEFLEX

Mineflex typically is constructed with Minemaster fabric. As the name “flex” indicates,
this product has a wire spiral helix which provides flexibility and avoids kinking.
The joining mechanism is the skirt connecting method consisting of eyelets and
a skirt enabling connection with Mineflat. This product is available in all material
types described on page 2. Other diameters and lengths available upon request.

D1 Nominal I.D. mm D1 Nominal I.D. inches L1 (m)
300 12 10
355 14 10
406 16 10
457 18 10
508 20 10
610 24 10
710 28 10
762 30 10
810 32 10
910 36 10
1067 42 10
1220 48 10
1400 56 10

TWIN DUCT

Twinduct is designed to be used in areas where damage is likely to occur on tight
areas of underground mining, especially where mine tunnel heights are limited.

Twinduct D1 (mm) Mineflat Equivalent (mm) L1 (m) L1 (m) L1 (m) Headspace saving with Twinduct (mm)
455 610 5 10 20 205
570 760 5 10 20 300
680 915 5 10 20 335
762/795 1067 5 10 20 405
910 1220 5 10 20 410
1045 1400 5 10 20 450

TWINDUCT TRANSITION / TROUSER LEG

The Twinduct Transition and Twinduct Trouser Legs (shown) convert a single Mineflat
duct into a Twinduct without losing airflow volume. Easily connects to existing Mineflat /
Mineflex and Twinduct. Selection is based on headspace and ventilation
line requirements.

Twinduct Equivalent (mm) Tubular Diameter (mm)
455 610 (24”)
570 760 (30”)
680 915 (36”)
762/795 1067 (42”)
910 1220 (48”)
1045 1400 (56”)

TWIN DUCT REDUCER

The Twinduct Reducer changes the diameter of the twinduct from a larger to
smaller size.

D1 (mm) D2 (mm) L1 (m)
910 762 5
1045 910 5

REDUCER

The Reducer changes the diameter of the single duct from a larger to smaller size.

D1 (mm) D2 (mm) L1 (m)
610 400 5
910 762 5
1067 762 5
1067 910 5
1220 1067 5
1300 1067 5
1400 1067 5
1400 1220 5

T Piece

Allows for changes in direction with the mine tunnel.

D1 (mm) D2 (mm) D3 (mm) L1 (m)
305 305 305 5
355 355 355 5
406 406 406 5
457 457 457 5
508 508 508 5
572 572 572 5
610 610 610 5
762 762 762 5
810 810 810 5
910 910 910 5
1067 1067 1067 5
1220 1220 1220 5
1400 1400 1400 5

DUAL FIN BRANCH PIECE

Used when a side tunnel diverts off the main tunnel. The branch is at 45° to the main
vent. The double hanging eyelets or ‘DUAL FINS’, allow the branch piece to be installed
left or right, simply by inverting it.

D1 (mm) D2 (mm) D3 (mm) L1 (m)
305 305 305 5
355 355 355 5
406 406 406 5
457 457 457 5
508 508 508 5
572 572 572 5
610 610 610 5
762 762 762 5
810 810 810 5
910 910 910 5
1067 1067 1067 5
1220 1220 1220 5
1400 1400 1400 5

Y Piece

Y Pieces split the vent into 2 streams and are made with a 120°.

D1 (mm) D2 (mm) D3 (mm) L1 (m)
305 305 305 2.5
355 355 355 2.5
406 406 406 2.5
457 457 457 2.5
508 508 508 2.5
572 572 572 2.5
610 610 610 2.5
762 762 762 2.5
810 810 810 2.5
910 910 910 2.5
1067 1067 1067 2.5
1220 1220 1220 2.5
1400 1400 1400 2.5

900 LONG RADIUS LOBSTER BACK

Long radius bend or Lobster Back allows a change in 900 direction. Lobster backs are
available in 3 pieces (as shown) or 5 pieces. It has double hanging eyelets or ‘DUAL
FINS’, which allow the part to be installed with a left or right turn. Mineflex can also be
used to cater for any angle direction change.

D1 (mm) D2 (mm) L1 (m)
305 305 5
355 355 5
406 406 5
457 457 5
508 508 5
572 572 5
610 610 5
762 762 5
810 810 5
910 910 5
1067 1067 5
1220 1220 5
1400 1400 5

FAN ADAPTOR

Long radius bend or Lobster Back allows a change in 900 direction. Lobster backs are
available in 3 pieces (as shown) or 5 pieces. It has double hanging eyelets or ‘DUAL
FINS’, which allow the part to be installed with a left or right turn. Mineflex can also be
used to cater for any angle direction change.

D1 (mm) L1 (mm)
610 500
710 582
762 625
810 664
910 746
1067 875
1220 1000
1400 1148

NIXON FLAPS / PARACHUTES

Nixon flaps and Parachutes block off access to closed sections of the tunnel/mine. Specify dimensions when ordering.
Supplied with

Supplied with pulleys and ropes.

Available with zippers or without..

MINEMASTER VENTILATION DUCTING “FLOW RESISTANCE” CHART AVERAGE THEORETICAL OPERATION

JOINING MECHANISM

The joining mechanism consists of eyelets and a skirt sewn into both ends of the duct as detailed below.
Skirt acts as an internal seal to minimise air loss through the joint.

HANGING CLIPS

Used to hang Mineflat/Mineflex to the knocker line.