These are the most popular of the small general purpose vessels.

• Max pressure: 138 bar
• Mounting style: Moveable/fixed head
• Closure: Split-ring
• Maximum head openings: 7 (dependent on opening size, and required fittings)
• Valve connections: ¹/₈" NPT male, ¹/₈" NPT female for HT
• Pressure gage: 3,5"

Parr offers a range of sizes large enough to work with significant sample sizes, yet small enough to handle with ease by all operators. They are made in both fixed head and moveable vessel styles and are available with an FKM O-ring seal for operating temperatures to 225 °C, and FFKM O-ring for temperatures to 300 °C, or with a flat, PTFE gasket for operating temperatures up to 350 °C maximum.