Pigtails

Cylinder pigtails are used to connect a manifold to compressed gas cylinders. They are equipped with a CGA inlet fitting which matches the cylinder valve CGA outlet connection (to minimize the possibility of hazardous misconnections). Most pigtails are provided with an attached wrench. All pigtails are pressure tested in excess of their required working pressure (all pigtails have a working pressure equal to the required CGA connection).

Brass manifold pigtails are ordered as options, allowing a choice of flexible or rigid construction. Stainless steel manifolds come standard with flexible type 316 stainless steel pigtails to provide maximum system integrity and product purity.

RIGID PIGTAILS

Rigid pigtails are the most common and least expensive pigtail, made from annealed copper, stainless steel, or brass heavy wall tubing. These pigtails are ideal for all gas services, especially high-purity service. The major drawback is work hardening and cracking due to bending in use over an extended period of time.

FLEXIBLE PIGTAILS

Flexible pigtails are recommended for frequent cylinder replacement situations where rigid pigtails can work harden and leak due to excessive bending. Flexible synflex pigtails have a nylon inner core with a polyester braid and polyester or polyurethane cover (recommended for general service). Flexible teflon pigtails have a virgin teflon inner core with a stainless steel outer braid. Flexible stainless steel pigtails have a corrugated inner stainless steel core with a stainless steel outer braid (recommended for high-usage or corrosive gas service).

ORDERING INFORMATION

Gas Service CGA Approved Pigtail Description Part Number
Acetylene 300 Flexible Pigtail, Synflex Hose, w/
Check Valve & Flash Arrestor
273-330363
Acetylene 300 Rigid Pigtail, Brass w/ Check
Valve & Flash Arrestor
273-331204
Acetylene 510 Flexible Pigtail, Synflex Hose, w/
Check Valve & Flash Arrestor
273-330354
Acetylene 510 Rigid Pigtail, Brass, w/ Check Valve
& Flash Arrestor
273-330347
Carbon
Dioxide
320 Flexible Pigtail, Synflex Hose 273-330347
Carbon
Dioxide
320 Rigid Pigtail, Copper 273-331237
Carbon
Dioxide
320 Rigid Pigtail, Copper w/ Check
Valve
273-411225
Carbon
Dioxide
320 Flexible Pigtail, Teflon Hose, w/
Stainless Steel Outer Braid
273-437517
Compressed
Air
346 Rigid Pigtail, Copper w/ Check
Valve
273-410996
Compressed
Air
346 Flexible Pigtail, Teflon Hose, w/
Stainless Steel Outer Braid, Check Valve
273-413857
Compressed
Air
346 Flexible Pigtail, Teflon Hose, w/
Stainless Steel Outer Braid, Check Valve (CGA 90° to hose)
273-413858
Compressed
Air
346 Rigid Pigtail, Copper 273-414368
Compressed
Air
346 Rigid Pigtail, Copper, Handtight 273-414369
Hydrogen 350 Rigid Pigtail, Copper w/ Check Valve 273-400234
Hydrogen 350 Flexible Pigtail, Synflex Hose, w/
Check Valve
273-411551
Hydrogen 350 Rigid Pigtail, Stainless Steel, w/
Brass CGA Fitting
273-415754
Hydrogen 350 Rigid Pigtail, Copper, for Cylinder
Charging
273-331203
Fuel Gases,
APACHE**,
Propane
(510P),
MAPP***,
Propylene
510 Flexible Pigtail, Synflex Hose, w/
Check Valve
273-330359
Fuel Gases,
APACHE**,
Propane
(510P),
MAPP***,
Propylene
510 Rigid Pigtail, Brass, w/ Check Valve 273-400233
Oxygen 540 Rigid Pigtail, Copper, for Charging/
Discharging
273-331200
Oxygen 540 Rigid Pigtail, Copper, Handtight 273-411662
Oxygen
Mixtures
296 Rigid Pigtail, Copper 273-3412032
Argon,
Helium,
Nitrogen
580 Flexible Pigtail, for Charging/
Discharging
273-330348
Argon,
Helium,
Nitrogen
580 Rigid Pigtail, Copper, for Charging/
Discharging
273-331232
Argon,
Helium,
Nitrogen
580 Flexible Pigtail, for Charging/
Discharging, ¼” FNPT
273-411833
Argon,
Helium,
Nitrogen
580 Flexible Pigtail, Handtight, for
Cylinder Charging
273-411664
Argon,
Helium,
Nitrogen
580 Rigid Pigtail, Copper, Handtight, for
Cylinder Charging
273-411692

*Pigtails with handtights (instead of wrench handles) are noted in description.

**Registered Trademark of Air Products and Chemicals, Inc.

***Registered Trademark of BOC Gases

Note: Pigtails for acetylene manifolds must have a check valve and dry flash arrestor and cannot be of copper construction. Use only those pigtails listed for acetylene service.

Pigtails used for fuel gas service other than acetylene must have a check valve at the manifold end.