Interlocked Hose

Penflex interlocked hose is made for a variety of specialized industrial applications and available in a wide range of metals, styles and sizes. Differing from corrugated hoses in its construction, interlocked hose is manufactured by helically winding preformed metal strip over a sizing mandrel and folding together the adjacent edges to form interlocked convolutions.

Instrumentation Tubing

A specific product category made using interlocked hose is instrumentation tubing. These assemblies are used in numerous industries, specifically by manufacturers of process and control instrumentation; measuring and controlling devices; analytical instruments; search and navigation equipment; and medical instruments. Typical applications include temperature measuring, recording, wiring conduit or armor cable, electronic shielding, and protective casing.

Made from 304 stainless steel, instrumentation tubing comes in two configurations, or constructions, commonly called SquareLok and InterLok, often abbreviated as SL and FI. Other metals are available.

Full product specs can be found here.

Safety Relief Valve Vent Connectors

Vent connectors play a critical role in helping piping systems absorb the movements and vibrations associated with the quick opening and closing of safety relief valves. Penflex manufactures vent connectors using both metal bellows and our unique fully-packed and pressure-tight M-100 interlocked hose.

For more information, please click here.

Penflex Interlocked Hose

Please click on the products below for full details. For detailed information on Penflex interlocked hose, download the Interlocked Hose Product catalog.

Interlock Hose: Exhaust Hose

Overview:
Penflex exhaust hoses are typically produced in a wide range of ID sizes, metals and weights. This range is available to provide the right hose for the application at the most economical cost. Interlocked exhaust hose utilizes a fully interlocked construction for strength and durability while allowing the hose to have excellent flexing characteristics. The normal configuration of exhaust hose is unpacked and fully extended. In order to minimize leakage, however, exhaust hose can be supplied packed upon request

Applications:
Typical uses of exhaust hose include engine exhaust and vacuum and collection service, conveying, ventilating lines and protective casing for cable and tubing.

Technical Data:
Penflex exhaust hoses are produced in 304 stainless steel as standard. Other alloys may be available upon special request. The strip thickness, and thus the hose weight, can be selected to match the application depending upon the degree of rough handling and the abrasive conditions of the service. Penflex makes three different weights of exhaust hose as indicated in the following tables.

Series	Weight Designation	Strip Thickness
IE30	Light	.010″ to .012″
IE50	Standard	.018″ to. 020

The size range of exhaust hose is from 1/2″ to 8″ inside diameter. For sizes larger than 8″ID, use the standard conveyor hose (up to 20″ID).

For metric data, please click here.

IE30 Interlocked Exhaust Hose
Strip Thickness 0.010/0.012″

Nominal Diameters		Minimum Coiling Diameter	Wt/Ft
Inside	Outside
½	0.61	6	0.23
¾	0.834	7	0.32</td >
1	1.11	9	0.41
1 ¼	1.385	11	0.44
1 ½	1.61	13	0.54
1 ¾	1.86	15	0.63
2	2.11	17	0.72
2 ¼	2.36	19	0.80
2 3/8	2.540	20	0.85
2 ½	2.61	21	0.89
2 ¾	2.86	23	0.96
2 7/8	3.083	25	1.00
3	3.11	26	1.06
3 ½	3.61	30	1.24
4	4.200	34	1.41
5	5.215	42	1.76
5 1/2	5.700	46	1.94
6	6.11	50	2.11
7	7.11	58	2.46

IE50 Interlocked Exhaust Hose
Strip Thickness 0.018/0.020”

Nominal Diameters		Minimumn Coiling Diameter	Wt/Ft
Inside	Outside
1 ½	1.66	17	0.86
1 ¾	1.91	19	1.00
2	2.20	22	1.13
2 ¼	2.495	25	1.27
2 ½	2.66	27	1.40
2 ¾	2.91	29	1.54
3	3.16	32	1.67
3 ½	3.66	38	1.95
4	4.230	43	2.22
5	5.16	53	2.76
6	6.16	63	3.30
7	7.16	74	3.85
8	8.16	84	4.39

Notes:

Tabulated weights apply to stainless steel.
Intermediate sizes, alloys and flexibility characteristics are all subject to quotation from the factory.
Dimensional Tolerance is +/- .020”

For metric data, please click here.

Interlock Hose: Conveyor Hose

Overview:
Penflex manufactures two distinct types of interlocked conveyer hoses designed especially for transfer of dry bulk materials: Standard Conveyor Hose and Smooth Bore Conveyor Hose.

Standard Conveyor Hose is a serviceable, unlined, medium weight hose featuring a fully packed interlocked construction.

Smooth Bore Conveyor Hose features rugged interlocking construction plus an integral metal strip lining. This lining provides Smooth Bore conveyor hose with a smooth bore that minimizes impaction and reduces turbulence for free flowing transmission of materials. Smooth Bore conveyor hose can also be produced with the inclusion of packing in the interlocks to reduce air loss and for low pressure requirements.

Applications:
Penflex conveyor hoses are excellent for applications involving the pneumatic transmission of flake or pelletized plastics, grain, coal dust, slag and other dry granular or abrasive materials. It can be used for the loading or unloading of ships, barges, containers, silos, elevators, highway and rail cars. Standard conveyor hose can also be used for air intake for diesel superchargers, exhausting gases from ovens and furnaces, and boiler draft system expansion joints.

Technical Data: STANDARD CONVEYOR HOSE

Nominal ID	Nominal OD	Minimum Coiling Diameter	Wt/Ft SS
3	3.25	30	2.3
4	4.25	40	3.1
5	5.25	48	3.8
6	6.25	58	4.8
8	8.25	67	6.0
10	10.25	96	7.52
12	12.25	114	9.0
14	14.25	133	11
16	16.25	152	12.0
18	18.25	170	14.5
20	20.25	190	17.0

For metric data, please click here.

SMOOTH BORE CONVEYOR HOSE

Nominal ID	Light Weight TLSS .015 Armour”/.015” Liner		Standard Weight TLSS .018” Armour/.015” Liner		Heavy Weight TLSS .024” Armour/.015” Liner
	Minimum Coiling Diameter	Wt/Ft	Minimum Coiling Diameter	Wt/Ft	Minimum Coiling Diameter	Wt/Ft
2	19	1.9	21	2.2
2 ½	22	2.3	24	2.6
3	24	2.8	26	3.1	29	3.8
4	32	3.6	35	4.1	39	5.0
5	47	4.5	50	5.1	57	6.1
6	52	5.4	56	6.1	63	7.3
8			91	8.1	98	9.4
10					111	11.0
12					132	13.0
14					154	15.5
16					176	17.5
18					198	20.5
20					220	23.0

For metric data, please click here.

Standard Smooth Bore Conveyor Hose is supplied unpacked. If there is a pressure requirement consult the table below. This data is also applicable to Standard Conveyor Hose.

Packing Material	Max. Temperature	Max. Pressure	Vacuum
Cotton	300 F	15 PSIG	15 in. Mercury, Max.
Elastomer	180 F	20 PSIG	20 in. Mercury, Max.
Silicone	500 F	20 PSIG	20 in. Mercury, Max.

Interlock Hose: M-100 Pressure Hose

Overview
Penflex M-100 pressure hose is a high quality, heavy duty, fully interlocked metal hose designed to withstand the abuses of many industrial applications. The inclusion of a quality packing into a specially formed groove during manufacturing serves as a continuous gasket to make the hose pressure tight. Media such as air and non-searching fluids can be conveyed by M-100 hose at moderate pressures and temperatures. For technical data refer to the appropriate specification tables.

Applications
M-100 pressure hose is an ideally suited hose for metal expansion joints, boiler relief valve sealing, pulverized coal cyclone feeders, boiler draft systems and BOF lance hose assemblies. Additionally, M-100 pressure hose can be used in applications involving diesel exhaust, tank car unloading, barge unloading, fuel oil transfer, oven exhaust, suction lines and air intake lines.

Technical Data

Size	Nominal OD	Maximum Working Pressure PSIG	Nominal Burst Pressure PSIG	Minimum Centerline Bend Radius	Strip Thickness	Weight Per Foot
½	0.65	500	1500	6	0.015	0.4
¾	0.93	495	1212	7	0.015	0.45
1	1.18	365	912	10	0.015	0.5
1 ½	1.69	240	600	14	0.015	0.8
2	2.19	190	540	19	0.018	1.2
2	2.19	190	540	19	0.018	1.2
2 ½	2.69	140	420	22	0.018	1.5
3	3.19	120	360	27	0.018	1.7
4	4.35	175	525	36	0.035	4.6
5	5.35	200	600	46	0.050	5.6
6	6.35	165	495	48	0.050	6.7
8	8.45	150	450	64	0.050	13.7
10	10.60	120	360	90	0.060	20.2
12	12.70	115	345	114	0.070	24.1
14	14.70	100	300	132	0.070	31.3
16	16.70	97	260	150	0.070	35.7
18	18.70	77	230	169	0.070	40.0
20	20.70	70	210	196	0.070	44.4
22	22.70	64	192	204	0.070	48.7
24	24.70	56	169	224	0.070	53.1
26	26.70	53	159	240	0.070	57.5
28	28.70	50	150	260	0.070	61.8

For metric data, please click here.

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