Unisource is your single source for all types of flexible connectors and expansion joints for the HVAC marketplace

Unisource is among the world’s largest suppliers of hose products for the transfer of high-pressure gas and cryogenic liquids. Our name says it all. Unisource is a complete source for all types of flexible hose—metallic, PTFE, thermoplastic. For over twelve years, Unisource has been a leading supplier to the gas and cryogenic industry throughout North America, Europe, and Asia.

From our extensive industry experience, we have developed specific hose assembly product suited for individual applications such as high-pressure cylinder filling, distribution manifolds, liquid cylinder applications, bulk cryogenic transfer, tube trailer service, bulk CO2 transfer, and CO2 beverage applications. Unisource assemblies are designed and recommended with special options such as armor casing, CGA cleaning for oxygen service, CGA nuts, nipples and other fittings, pressure testing, helium leak testing, tethering, and many other considerations.

Our line of hose products for the compressed gas and cryogenic industry is constantly expanding. If your company has an applications that requires something new and different.—call us. We may have just what you’re looking for. If not, let’s design it together. We’re committed to being the single source hose supplier for the industry

High Pressure Gas Hose

PTFE & ETFE Core Stainless Steel Pigtails

Hose
End Fittings
Temperature
Pressure Range
Sizes
Braid
.030 wall, non-conductive virgin white PTFE tubing Male or female 1/4″ NPT in either stainless steel or brass. 1/4″ female NPT live swivel. Also stainless steel compression tube ends -65°F to +450°F 3000 PSIG MAWP -5 (1/4″ ID) Single braid of 300 series stainless steel

Style TSC 3000 PSIG Pigtails

Style TSCZ pigtails are similar in construction to Style TSC, with the addition of a second reinforcing braid and a post-sintered PTFE lining. The reinforcing provides a working pressure of 3600 PSI maximum working pressure for additional strength and safety. Fitting options are identical to Style TSC hose.

Constructed with a white, non-conductive PTFE liner. Fittings are available in both brass and stainless steel. Stainless steel full-time swivel ends are also a standard stock item for this hose. An anti-whip, anti-kink “Safety Armor” is available for additional protection. Each hose is marked with branding noting manufacturer, pressure rating, and date of manufacture. CGA fittings and adapters can be added as required.

Style TSCZ flexible pigtails have a minimum burst pressure rating of four times the maximum working pressure. The optional stainless steel armor casing allows free movement of the hose and protects the hose from damage. This casing also acts as a bend restrictor to prevent kinking near the connections and to enhance whip protection in the event of a cylinder or other similar incidents. Special heavy duty brass fittings are used on armored assemblies which work in conjunction with a matching stainless steel crimp collar over the armor for extra end pull protection. Brass Extension Adapter BE-4-3HP is recommended in oxygen applications to absorb the heat experienced in adiabatic compression and eliminate possible damage to the PTFE tube if the pigtail is quickly pressurized with oxygen against a closed valve or regulator.

Style TSCZ 3600 PSIG Pigtails

Style TSC pigtails are the workhorse of the industry. Light and highly flexible, this style carries a working pressure rating of 3000 PSI maximum working pressure. Each pigtail assembly is tested to 4500 PSIG. Constructed with a white, non-conductive PTFE liner. Fittings are available in both brass and stainless steel. Stainless steel full-time swivel ends are also a standard stock item for this hose. An anti-whip, anti-kink “Safety Armor” is available for additional protection. Each hose is marked with branding noting manufacturer, pressure rating, and date of manufacture. CGA fittings and adapters can be added as required.

Style TSC flexible pigtails have a minimum burst pressure rating of four times the maximum working pressure. The optional stainless steel armor casing allows free movement of the hose and protects the hose from damage. This casing also acts as a bend restrictor to prevent kinking near the connections and to enhance whip protection in the event of a cylinder or other similar incidents. Special heavy duty brass fittings are used on armored assemblies which work in conjunction with a matching stainless steel crimp collar over the armor for extra end pull protection. Brass Extension Adapter BE-4-3HP is recommended in oxygen applications to absorb the heat experienced in adiabatic compression and eliminate possible damage to the PTFE tube if the pigtail is quickly pressurized with oxygen against a closed valve or regulator.

Hose
End Fittings
Temperature
Pressure Range
Sizes
Braid
.040 wall, non-conductive virgin white post-sintered PTFE tubing Male or female 1/4″ NPT in either stainless steel or brass. 1/4″ female NPT live swivel. Also stainless steel compression tube ends -65°F to +450°F 3000 PSIG MAWP -5 (1/4″ ID) Two braids of 300 series stainless steel

Hose
End Fittings
Temperature
Pressure Range
Sizes
Braid
White ETFE Male or female 1/4″ NPT in either stainless steel or brass. 1/4″ female NPT live swivel. Also stainless steel compression tube ends -100°F to +250°F 3000 PSIG MAWP -5 (1/4″ ID) Single braid of 300 series stainless steel

Style TSCZEL ETFE Pigtails

Unisource now offers the ideal flexible pigtail for use with small molecule gases. Style TSCZEL Tefzel ETFE pigtails offer permeation rates far lower than standard PTFE pigtails, with a cost that is a fraction of that of welded all-stainless steel pigtails.

Style TSCZEL pigtails are used throughout the industry in the filling of helium and hydrogen cylinders and can also be used for many other high-pressure gases. (Contact Unisource for specific gas compatibility).

Smooth bore, medium-pressure ETFE tubing is protected by an exterior stainless steel braid. Standard Style TSCZEL pigtails are rated for 3000 PSIG maximum working pressure. Special order Style TSCZELZ is double braided and rated for 3500 PSIG.

Style TSCZEL Tefzel hose has a temperature range of -100°F to 250°F. Like standard PTFE pigtails, it offers extreme flexibility and light-weight characteristics.

Options include end fittings of brass or stainless steel and configurations of 1/4” FNPT, 1/4” FNPT swivel, 1/4” MNPT, and an assortment of other fittings equal to those offered for standard PTFE pigtails. For additional safety, these pigtails can be manufactured with our stainless steel anti-whip, anti-kink armor casing. In addition, CGA nut and nipple combinations can be factory installed, along with options such as check valve nipples, hand-tight adapters, elbows, and other adapters. Style TSCZEL pigtails are degreased, 100% tested to 1-1/2 times the working pressure, and ready for installation. Not recommended for oxygen service.

®Tefzel is a trademark of E.I. duPont Nemours & Co.

Options For TSC, TSCZ, & TSCZEL Pigtails

Along with the optional stainless steel armor casing, Unisource offers a variety of other options that can be specified on PTFE and ETFE pigtails. These options include special end fittings, CGA adapters, pipe adapters, and tethering. The following is a partial list of these options:

  • Brass male NPT end fitting instead of female NPT
  • Brass street elbow installed and pressure tested
  • Brass CGA wrench-tight nut and nipple installed and pressure tested
  • Brass CGA hand-tight nut and soft-tip nipple installed and pressure tested
  • Brass CGA nut and check valve nipple installed and pressure tested
  • “Oxy-Extension” brass pipe thread extension adapter added to hose, 1/4” female NPT x male NPT x 3” long hex fitting
  • 316SS MNPT fitting per end
  • 316SS FNPT fitting per end
  • 316SS FNPT special swivel fitting
  • 316SS compression tube end
  • Standard tethering of pigtail

All Metallic Gas Pigtails

Style UFHP22 3850 PSIG Stainless Steel Core Pigtails

Ultraflex HP pigtails are constructed with a helical close-corrugation 316 stainless steel core, ensuring high-purity, zero effusion, and excellent flexibility. Two stainless steel braids provide extremely high working pressure—4000 PSI MAWP with a 4:1 safety factor. Welded end connections are constructed using 316 stainless steel. Optional stainless steel armor is flexible and streamline, enhancing kink resistance, braid protection, and anti-whip protection.

Each Ultraflex HP assembly is permanently marked with manufacturer, pressure rating, and date of manufacture– meeting CGA requirements, providing easy identification, and promoting safety. These pigtails are ideal for small molecule gases such as helium and hydrogen that may effuse through the walls of other types of pigtails. The inherent properties of 316 stainless steel also are ideal for specialty gas applications. Consider Ultraflex HP for permanent on-site installations in connection to distribution and switch-over manifolds*. Each pigtail assembly is pressure tested at 150% of the rated working pressure using nitrogen under water. Optional testing can include mass spectrometer helium leak tests using customer specifications.

End fitting options are male NPT, female NPT, compression tube, or face seal (male or female). Assemblies can be cleaned for oxygen service to meet CGA specification G-4.1. Cleaned pigtails will be capped and packaged in clear bags with “oxygen clean” certification cards. CGA nuts, nipples, check-valve nipples, hand-tight nuts, elbows, or distance pieces may be specified to be installed on the assemblies.

* Note: Due to the damaging effects of high velocity gases on the corrugated innercore, metallic core hose in not recommended for cylinder filling applications.

Hose
End Fittings
Temperature
Pressure Range
Sizes
Braid
Compressed corrugation 316 stainless steel Male or female 1/4″ NPT, compression tube end, or face seal. Fitting material is 316 stainless steel Cryogenic to +1500°F 3850 PSIG MAWP 1/4″ Two braids of 300 series stainless steel

Hose
End Fittings
Temperature
Pressure Range
Sizes
Braid
Compressed corrugation 316 stainless steel Male or female 1/4″ NPT, compression tube end, or face seal. Fitting material is 316 stainless steel Cryogenic to +1500°F 4500 PSIG MAWP 1/4″ Two braids of 300 series stainless steel

Style SF4500 4500 PSIG Stainless Steel Core Pigtails

For extreme pressure service when a metallic pigtail is required. Style SF4500 all-stainless steel, all-welded hoses are a zero permeation product, ideal for specialty/high purity gases. the 4500 PSIG rating is the highest in the industry for metal hose pigtails. Optional stainless steel armor casing provides additional life, safety, and protection. Each assembly is tested to 1-1/2 times MAWP. Branded with part number, manufacturer, size, MAWP, and month/year.

These pigtails are ideal for small molecule gases such as helium and hydrogen that may effuse through the walls of other types of pigtails. The inherent properties of 316 stainless steel also are ideal for specialty gas applications. Consider SF4500 for permanent on-site installations in connection to distribution and switch-over manifolds*. Each pigtail assembly is pressure tested at 150% of the rated working pressure using nitrogen under water. Optional testing can include mass spectrometer helium leak tests using customer specifications.

End fitting options are male NPT, female NPT, compression tube, or face seal (male or female). Assemblies can be cleaned for oxygen service to meet CGA specification G-4.1. Cleaned pigtails will be capped and packaged in clear bags with “oxygen clean” certification cards. CGA nuts, nipples, check-valve nipples, hand-tight nuts, elbows, or distance pieces may be specified to be installed on the assemblies.

* Note: Due to the damaging effects of high velocity gases on the corrugated innercore, metallic core hose in not recommended for cylinder filling applications

Style UFHP22 3850 PSIG Stainless Steel Core Pigtails

Ultraflex HP pigtails are constructed with a helical close-corrugation 316 stainless steel core, ensuring high-purity, zero effusion, and excellent flexibility. Two stainless steel braids provide extremely high working pressure—4000 PSI MAWP with a 4:1 safety factor. Welded end connections are constructed using 316 stainless steel. Optional stainless steel armor is flexible and streamline, enhancing kink resistance, braid protection, and anti-whip protection.

Each Ultraflex HP assembly is permanently marked with manufacturer, pressure rating, and date of manufacture– meeting CGA requirements, providing easy identification, and promoting safety. These pigtails are ideal for small molecule gases such as helium and hydrogen that may effuse through the walls of other types of pigtails. The inherent properties of 316 stainless steel also are ideal for specialty gas applications. Consider Ultraflex HP for permanent on-site installations in connection to distribution and switch-over manifolds*. Each pigtail assembly is pressure tested at 150% of the rated working pressure using nitrogen under water. Optional testing can include mass spectrometer helium leak tests using customer specifications.

End fitting options are male NPT, female NPT, compression tube, or face seal (male or female). Assemblies can be cleaned for oxygen service to meet CGA specification G-4.1. Cleaned pigtails will be capped and packaged in clear bags with “oxygen clean” certification cards. CGA nuts, nipples, check-valve nipples, hand-tight nuts, elbows, or distance pieces may be specified to be installed on the assemblies.

* Note: Due to the damaging effects of high velocity gases on the corrugated innercore, metallic core hose in not recommended for cylinder filling applications.

Hose
End Fittings
Temperature
Pressure Range
Sizes
Braid
Monel, helically corrugated inner core. Heavy wall Male or female Monel 1/4″ NPT Cryogenic to +1500°F 3000 PSIG MAWP 1/4″ Two braids of 304 series stainless steel

Thermoplastic Pigtails

Style 4705 Nylon Lined, 3000 PSIG Pigtails

Style 4705 is an economical, lightweight pigtail for inert gas applications. Excellent permeation characteristics. Each assembly is tested to 1-1/2 times MAWP. Ink jet branded with part number, size and MAWP. Special pin-pricked Polyurethane cover eliminates cover bubbling and is resistant to abrasion and environmental conditions. Fittings are plated carbon steel. Stainless steel fittings available upon request. Optional plated steel spring guard protect the hose exterior and helps to eliminate kinking near the hose ends.

* Not recommended for oxygen service.

Style 4805 5000 PSIG Thermoplastic Pigtails

Series 4805 thermoplastic pigtails are the economical choice for extreme pressure inert gas service. Nylon liner, Kevlar braid and special abrasion resistant, pin-pricked Polyurethane cover. Each assembly is tested to 1-1/2 times MAWP. Fittings are plated carbon steel. Stainless steel fittings available upon request. Optional plated steel spring guard protect the hose exterior and helps to eliminate kinking near the hose ends.

Branded with part number, size, and MAWP.

* Not recommended for oxygen service.

Tube
Cover
Reinforcement
Temperature
Pressure Range
Sizes
Fittings Available

 

Nylon Pin-pricked Polyurethane Polyester braiding -40°F to +212°F 3000 PSIG MAWP 1/4″ Plated carbon steel. 1/4″ female or male NPT

Tube
Cover
Reinforcement
Temperature
Pressure Range
Sizes
Fittings Available

 

Nylon Pin-pricked Polyurethane Kevlar braid -40°F to +212°F 5000 PSIG MAWP 1/4″ Plated carbon steel. 1/4″ female or male NPT

Tube Trailer Hose

Style TSHP is constructed with a smooth-bore PTFE liner for even product flow and low permeation. High density stainless steel braids provide the highest working pressure possible for tube trailer service. The optional stainless steel armor casing ensures safety by offering anti-kink, anti-whip characteristics and protecting the exterior braid from abrasion damage. Each assembly is tested to 1-1/2 times the MAWP. Branded with part number, size, MAWP, and month/year. Can be cleaned and packaged for oxygen service to CGA standards.

An all-stainless steel, all-welded construction for zero permeation. Hose and end fittings are 316L stainless steel. The optional stainless steel armor casing adds protection and safety. Each assembly is tested to 1-1/2 times the MAWP. Branded with part number, size, MAWP, and month/year. Can be cleaned and packaged for oxygen service to CGA standards.

Style SF82 is a Monel hose designed for corrosive gas or oxygen applications. Rated for 2500 PSI MAWP. Monel corrugated hose, series 300 double braid and Monel end fittings. Optional armor casing is stainless steel. Each assembly is tested to 1-1/2 times the MAWP. Branded with part number, size, MAWP, and month/year.

Additional Specifications

Hose:

Conductive PTFE, smooth bore

Reinforcements:

High density stainless steel exterior braids

Temperature:

-100°F to +450°F

Pressure Range:

4000 PSIG MAWP

Sizes:

1/2″

Fittings Available:

316 stainless steel. Male or female 1/2″ NPT or 1/2″ female JIC swivel

Additional Specifications

Hose:

Conductive PTFE, smooth bore

Reinforcements:

High density stainless steel exterior braids

Temperature:

-100°F to +450°F

Pressure Range:

4000 PSIG MAWP

Sizes:

1/2″

Fittings Available:

316 stainless steel. Male or female 1/2″ NPT or 1/2″ female JIC swivel

Additional Specifications

Hose:

Conductive PTFE, smooth bore

Reinforcements:

High density stainless steel exterior braids

Temperature:

-100°F to +450°F

Pressure Range:

4000 PSIG MAWP

Sizes:

1/2″

Fittings Available:

316 stainless steel. Male or female 1/2″ NPT or 1/2″ female JIC swivel

Nuts, Nipples & Adapters

Bulk CGA Nuts & Nipples

Bulk CGA Nuts & Nipples

CGA
BrassAdapters

The following CGA nuts, nipples and other fittings can be installed on hose assemblies or are available in bulk in standard carton quantities.

Unisource stocks a wide variety of brass pipe thread and SAE flare style adapters. The following is a partial listing of available brass adapters.

Cryogenic Cylinder & Bulk Transfer Hose

Cryogenic Liquid Cylinder Hose

Style UF21 “Ultraflex” Liquid Cylinder Hose

Unisource Ultraflex Style UF21 liquid cylinder hose combines an ultra flexible design with high cycle life and extreme durability.

Ultraflex UF21 construction starts with a special close pitch corrugated stainless steel. Corrugations are a unique disymetrical omega configuration, as opposed to the common U-shape corrugations that standard hoses have. The result is a hose unparalleled in ease of bending and cycle-life. Ultraflex UF21 carries an ISO 10380 rating of a minimum of 50,000 bending cycles. A low-profile, high coverage stainless steel braid provides high working pressures. An optional streamlined, highly flexible stainless steel armor casing covers the hose and provides kink resistance and protection for the braid. Special smooth stainless steel reducing collars are crimped over the armor and become a transition piece to the end fittings. Welded-on ends are machined from stainless steel bar stock as opposed to the thin wall flared tubing that most liquid cylinder hoses are constructed with. Flared ends have a smooth RA finish. Stainless steel nuts and flares are offered in either CGA295 or CGA440 style.

Ultraflex UF21 hose is unaffected by cryogenic temperatures, and remains flexible in transfer applications. This hose carries a working pressure of 1160 PSIG—far beyond the operating pressures of standard liquid cylinder. Each hose assembly is individually leak tested. The stainless steel collar is stamped with the manufacturer, pressure rating, and date.

All Ultraflex UF21 liquid cylinder hoses can be cleaned for oxygen service. Unisource maintains an on-site cleaning facility that cleans, marks, inspects, and packages assemblies to the requirements of CGA G-4.1.

Standard assemblies are 1/2-inch I.D., but are available in several other sizes. Options include male NPT 3/8” or 1/2” fittings, or 90-degree stainless steel elbow end with flare. Pressure relief tubes with 1/4-inch FNPT port can also be permanently welded to the assembly. Accessories include male x female 90-degree cryogenic elbows, heavy-duty bronze phase separators, safety relief adapters, and quick-fill T-handle spin adapters.

Style SF21 “Superflex” Liquid Cylinder Hose

Style SF21 is an economical standard-duty liquid cylinder hose. High-pressure rated, with good flexibility and durability. Flared ends have a smooth RA finish. Stainless steel nuts and flares are offered in either CGA295 or CGA440 style.

This hose carries a working pressure of 1170 PSIG—far beyond the operating pressures of standard liquid cylinder. Each hose assembly is individually leak tested. The stainless steel collar is stamped with the manufacturer, pressure rating, and date.

All Superflex SF21 liquid cylinder hoses can be cleaned for oxygen service. Unisource maintains an on-site cleaning facility that cleans, marks, inspects, and packages assemblies to the requirements of CGA G-4.1.

Standard assemblies are 1/2-inch I.D., but are available in several other sizes. Options include male NPT 3/8” or 1/2” fittings, or 90-degree stainless steel elbow end with flare. Pressure relief tubes with 1/4-inch FNPT port can also be permanently welded to the assembly. Accessories include male x female 90-degree cryogenic elbows, heavy-duty bronze phase separators, safety relief adapters, and quick-fill T-handle spin adapters.

Hose
Temperature
Pressure Range
Sizes
Fittings Available
Corrugated close pitch hydroformed 321 stainless steel. ISO 10380 certified Cryogenic to +1500°F 1160 PSIG MAWP 1/2″ Stainless steel female flare—CGA 295 or CGA 440. Optional fittings are 3/8″ or 1/2″ male NPT or CGA long radius elbow

Hose
Reinforcement
Temperature
Sizes
Fittings Available
Corrugated close pitch 321 stainless steel. Mechanically formed Stainless steel braid Cryogenic to +1500°F 1/2″ Stainless steel female flare—CGA 295 or CGA 440. Optional fittings are 3/8″ or 1/2″ male NPT or CGA long radius elbow

Truck & Tank Bulk Loading/Unloading Hose

SF21 Special Metal Hose Assemblies

Unisource Superflex Style SF21 is an all-stainless steel corrugated hose with stainless steel overbraid. SF21 is ideal for cryogenic liquid bulk transfer. Light weight and flexible at cryogenic temperatures. Standard assembly has 18” long stainless steel armor casing cuffs at act as bend restrictors. Full range of sizes available. Hoses can be cleaned, capped, and bagged for oxygen service. Optional bronze CGA nuts, sleeves, and plugs can be added (specify thread-on or backwelded). SF21 Superflex bulk cryogenic hoses can be ordered with full stainless steel armor casing or “Tuff-Guard” nylon scuff guard. For higher pressure service, specify SF22 double braided hose.

CGA Nuts, Sleeves, Plugs For Hose

Bronze/brass CGA nuts, sleeves, and plugs and other accessories can be ordered attached to bulk cryogenic hose or separately. Tail plugs for nitrogen, argon, and oxygen are aluminum. Tail plugs for C02 are brass.

Hose
Reinforcement
Temperature
Pressure Range
Sizes
CGA Fittings
Fittings Available
Corrugated close pitch 321 stainless steel. Mechanically formed Stainless steel braid Cryogenic to +1500°F 518 PSIG to 571 PSIG (Depending on size) 1″, 1-1/2″, and 2″. Other sizes available upon request  CGA nuts, sleeves, and plugs for oxygen, nitrogen, argon, or CO2  Male or female stainless steel NPT threads

Carbon Dioxide Liquid/Vapor Transfer Hose

Series 4770 Beverage CO2 Fill Hose

Series 4770 thermoplastic hose is specifically designed for the transfer of liquid and gaseous carbon dioxide (Co2) for beverage applications. It is commonly used on squirt-truck delivery reels as well as flexible lines from the restaurant wall-box to the liquid cylinders. Series 4770 hose is specifically formulated to perform well in temperatures as low as -40 Deg. F., and the proprietary core is plasticiizer-free and FDA compiant. Our unique bonding process guarantees excellent kink resistance, and the proprietary “Tuff-Skin” cover provides for superior handling and abrasion resistance.

Cryogenic

Series 4770 thermoplastic hose is specially designed for the transfer of liquid and gaseous carbon dioxide (co2) for beverage applications. It is commonly used on squirt truck delivery reels as well as flexible lines from the restaurant wall-box to the liquid cylinders. Series 4770 hose is specially formulated to perform well in temperatures as low as -40ºF, and the proprietary core tube is plasticizer free and FDA compliant. Our unique bonding process guarantees excellent kink resistance, and the proprietary “Tuff-Skin” cover provides for superior handling and abrasion resistance.

Reinforcement: 

Polyester Braiding

Temperature:

-40°F to +150°F

Pressure Range:

2000 PSIG

Branding:

Black letter ink jet branding

Sizes:

1/2″

Series 4770 Beverage CO2 Fillng Hose

Series 4770 thermoplastic hose is specifically designed for the transfer of liquid and gaseous carbon dioxide (Co2) for beverage applications. It is commonly used on squirt-truck delivery reels as well as flexible lines from the restaurant wall-box to the liquid cylinders. Series 4770 hose is specifically formulated to perform well in temperatures as low as -40 Deg. F., and the proprietary core is plasticiizer-free and FDA compiant. Our unique bonding process guarantees excellent kink resistance, and the proprietary \”Tuff-Skin\” cover provides for superior handling and abrasion resistance.

Fittings & Accessories for Series 4770 Co2 Hose & Equipment

Hose
End Fittings
Elbows
Pressure Range
Sizes
Braid
Allowable Motions
Type 321 stainless steel annular corrugated hose Painted carbon steel male NPT ends (Series 445), or painted weld ends (Series 450). Painted Sch. 40 carbon steel 90-degree and 45-degree elbows. Stainless steel available upon request 150 PSIG 1/2″ through 4″ Type 304 stainless steel 4″

Want to speak to a professional?

Thank you for taking the time to visit our site. Our customer service team is available to assist you Monday through Friday, 8 a.m. to 5 p.m. For additional information pertaining to the services or products that we provide or if you need an estimate, contact one of our offices.

Contact Us

reCAPTCHA is required.
Close