Specifications Sample Cylinders • Pressure Ratings at –50 to 50°C (–58 to 122°F) • Materials • Internal Volume • Directive Compliance • End Connections Cylinder Valves • Pressure Ratings • Temperature Rating • Body Material • Directive Compliance Rupture Discs • Pressure Ratings • Body Material • Directive Compliance

Up to 300 bar (4350 psig) 304L and 316L stainless steel 40 to 3785 cm³ (up to 1 gal) TPED 99/36/EC 1/8 to 1/2 in. female NPT and 1/4 in. female ISO 7/1 Up to 345 bar (5003 psig) –20 to 65°C (–4 to 150°F) 316 stainless steel TPED 99/36/EC Up to 196 ± 10 bar (2850 ± 150 psig) 316L stainless steel PED 97/23/EC

More Information
Download the Swagelok Products Compliant with the Transportable Pressure Equipment Directive (TPED) catalog.
Find TPED-compliant sample cylinders in the product search.

Additional Products
See sample cylinders compliant with DOT and TC and miniature sample cylinders.

TPED-Compliant Products
The Transportable Pressure Equipment Directive (TPED) provides requirements relating to the design, manufacture, and testing of transportable pressure vessels and accessories, including sample cylinders and cylinder valves, used in gas service. The intent of the directive is to provide a uniform level of product safety throughout the countries of the European Union.

Double-Ended Sample Cylinders

• Body made of seamless tubing provides consistent wall thickness, size, and capacity.
• Smooth internal neck transition allows easy cleaning and eliminates trapped fluids.
• Cold-formed female NPT threads provide greater strength.
• Heavy-wall end connections provide strength and resist flaring.
• Full-penetration gas tungsten arc-weld construction provides leak-tight sample containment.

Cylinder Valves

• D Series Nonrotating Stem Needle Valves
• Orifice size 5.6 mm (0.218 in.).
• Flow coefficient (Cv) 0.53.
• Compact, rugged design.
• Protective handle prevents contaminants from entering functional valve parts.
• Valve can be configured with rupture disc.

  

• N Series Severe-Service Union-Bonnet Needle Valves
• Orifice size 4.0 mm (0.156 in.).
• Flow coefficient (Cv) 0.35.
• Union-bonnet construction prevents accidental valve disassembly.
• Packing bolt design permits packing adjustments in the open position.
• Safety back seating seals in fully open position.

Rupture Disc Units
Swagelok rupture disc units protect sample cylinders from overpressurization by venting the cylinder contents to atmosphere. The rupture disc is welded to a body that is threaded into a valve body or a rupture disc tee and sealed by an elastomer O-ring. Nonrotating stem needle valves with rupture disc units and rupture disc tees are also available.

Product Markings
Swagelok TPED-compliant sample cylinders and cylinder valves are marked with the pi symbol and the identification number of the Notified Body which performed the assessment.
Swagelok TPED-compliant rupture disc assemblies are marked with the CE symbol and the identification number of the Notified Body which performed the assessment.

Testing
Every TPED-compliant sample cylinder is hydrostatically tested at 1.5 times the pressure rating.
Every TPED-compliant Swagelok cylinder valve is factory tested with nitrogen at 69 bar (1000 psig). Seats have a maximum allowable leak rate of 0.1 std cm³/min. Shell testing is performed at 1.5 times the pressure rating to a requirement of no detectable leakage with a liquid leak detector.

Cleaning and Packaging
All Swagelok TPED-compliant sample cylinders, rupture disc assemblies, and cylinder valves are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10). Cleaning and packaging in accordance with Swagelok Special Cleaning and Packaging (SC-11) to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C are available as an option for cylinder valves.

Documentation
A Declaration of Conformity is available for all Swagelok TPED-compliant products. Contact your authorized Swagelok sales and service representative.


Options and Accessories

• PTFE coating
• Electropolishing
• Additional marking
• End caps
• Caps and plugs
• Carrying handle