ALTERNATIVE FUEL SYSTEMS, INC.

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CUSTOM LPG HIGH PRESSURE HOSE ASSEMBLIES

Alternative Fuel Systems offers three styles of high pressure hose for LPG connections.

  • PARKER / DAYCO 7243 HA Series assemblies -  For making connections from the cylinder to the bulkhead and from the bulkhead to the converter assembly in all non-certified fuel systems.
  • PARKER SS23CG NYLON LINED NL Series assemblies - PARKER SS23CG NYLON LINED - For making connections from the cylinder to the bulkhead on all certified fuel systems.
  • AEROQUIP FC321 Hose - For reusable hose ends to be assembled by the end user.

HA Series Hose Assemblies

Parker 7243

  • Our HA series LPG hoses are assembled in house to any length you require. Some common sizes are stocked.
  • We use Parker / Dayco 7243 style hose. 5/16" I.D. Working pressure - 350 P.S.I. Burst pressure 1750 P.S.I. The inner tube is Black Nitrile, with one stainless steel braid reinforcement, and a rubber impregnated textile cover.
  • There are four styles of hose ends that may be used in any combination. The standard 3/8" SAE 45° female flare straight swivel, a 1/4 NPT male pipe end, a short 90° with a 3/8" SAE 45° female flare, and a long 90° with a 3/8" SAE 45° female flare. All fittings are zinc plated steel.
  • The hose may be supplied with or without a stainless steel wire cover, part number M504. You may specify a full or partial cover.
  • All assemblies are U.L. listed under file number MH26215.
  • Three pieces of each lot of assemblies are tested for tensile strength, and all final assemblies are 100% leak tested at not less than 350 P.S.I.
  • Hose ends are capped prior to shipment to prevent contamination, and thread damage.
  • Click here for part number format.

Hose assembly variations

Click on image for larger view

HA100 HA101 HA102 HA103 HA104
HA105 HA106 HA107 HA108 HA109

Hose end end styles

Straight hose end 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Clear zinc plated steel.

1/4" NPT male pipe thread hose end. Clear zinc plated steel.

Short 90° hose end. 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Zinc yellow cromate plated steel.

Long 90° hose end. 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Zinc yellow cromate plated steel

NL Series Hose Assemblies

SS23CG - NYLON LINED  FOR C.A.R.B. / EPA SYSTEMS

Required by carburetion manufactures for certified systems on trucks built after 2004!

THERE IS ONLY ONE MANUFACTURER OF SS23CG TYPE HOSE!

  • Our NL series LPG hoses are assembled in house to any length you require.
  • We use Parker SS23CG style hose. 5/16 I.D. Working pressure - 350 P.S.I. Burst pressure 1750 P.S.I. Nylon inner tube that resists LPG,CNG, and oil. Corrosion resistant stainless steel wire braid reinforcement. Weather resistant synthetic rubber cover. Contains no substances which may contaminate LPG/CNG systems. Part number and U.L. markings are embossed on outer cover.
  • Meets permeation requirements of 1,6g/m2
  • Temperature range -40°C to + 121°C (-40°F to + 250°F)
  • There are four styles of hose ends that may be used in any combination. The standard 3/8" SAE 45° female flare straight swivel, a 1/4 NPT male pipe end, a short 90° with a 3/8" SAE 45° female flare, and a 45° with a 3/8" SAE 45° female flare. All fittings are zinc plated steel.
  • The hose may be supplied with or without a stainless steel wire cover, part number M504. You may specify a full or partial cover.
  • All assemblies are U.L. listed under file number MH26215.
  • Three pieces of each lot of assemblies are tested for tensile strength, and all final assemblies are 100% leak tested at not less than 350 P.S.I.
  • Hose ends are capped prior to shipment to prevent contamination, and thread damage.
  • Click here for part number format.

Hose assembly variations

Click on image for larger view

Photo to be added Photo to be added Photo to be added
NL100 NL101 NL102 NL103 NL104
Photo to be added Photo to be added Photo to be added Photo to be added
NL105 NL106 NL107 NL108 NL109

Hose end end styles

PHOTO TO BE

ADDED

 Straight hose end 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Clear zinc plated steel. 1/4" NPT male pipe thread hose end. Clear zinc plated steel.  90° hose end. 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Clear zinc  plated steel. 45° hose end. 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Clear zinc plated steel.

Aeroquip Series Hose

For field assembly with re-usable hose ends

  • FC321 series LPG hose is available in bulk or cut to lengths you specify.
  • We supply Aeroquip / Weatherhead FC321-06 style hose. 5/16" I.D. Working pressure - 350 P.S.I. Burst pressure 1750 P.S.I. The inner tube is Black Nitrile, with one stainless steel braid reinforcement, and a rubber impregnated textile cover.
  • There are three styles of hose ends that may be used in any combination. The standard 3/8" SAE 45° female flare straight swivel, a 1/4 NPT male pipe end, and a  90° with a 3/8" SAE 45° female flare. All fittings are zinc plated steel.
  • The hose may be supplied with or without a stainless steel wire cover, part number M504. You may specify a full or partial cover.
  • All components are U.L. listed .

BULK HOSE

REUSABLE HOSE END FITTINGS
LPG high pressure hose. 5/16" I.D. Black Nitrile inner tube. A textile inner braid.  A Stainless steel reinforcement braid. Rubber impregnated textile cover. U.L. listed Straight hose end 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Clear zinc plated steel. 2 piece hose end. Ferrule threads onto hose. Hose end threads into ferrule. May only be used with FC321 Series hose. 1/4" NPT hose end. Clear zinc plated steel. 2 piece hose end. Ferrule threads onto hose. Hose end threads into ferrule. May only be used with FC321 Series hose. 90° hose end 3/8" SAE 45° female flare. 5/8-18 Thread. 3/4" Hex. Clear zinc plated steel. 2 piece hose end. Ferrule threads onto hose. Hose end threads into ferrule. May only be used with FC321 Series hose.

FC321-06

  

4401-6S

  

4412-4-6S

  

190302-6S

  

High Pressure Hose Assembly

 

  Step 1. Cut hose square to length required with fine tooth hacksaw or cutoff wheel. Put socket in vise and screw hose counter-clockwise into socket until hose bottoms. Back off 1/4 turn

 

 

 

 

  Step 2. Oil nipple threads, assembly tool into mandrel and inside of hose liberally.

 

 

 

  Step 3. MALE ENDS: Push assembly tool into nipple. Oil. Screw nipple clockwise into socket and hose. Tighten nipple until snug against socket.

 

 

 

  Step 4. SWIVEL ENDS: Tighten nipple and nut assembly onto tool. Oil. Screw nipple clockwise into   socket and hose. Leave 1/32" clearance between nut and socket so nut will swivel.

Note: Completed assemblies should be tested for leaks using compressed air and submerging entire hose in water, prior to installing in an LPG system.