The Series 4675 General Purpose Vessels have volumes ranging from 10 to 40 liters. The 10- and 18.75-liter vessel styles are available in either a moveable head or fixed head design. These vessels can be equipped with an FKM O-ring seal for operating temperatures up to 225 °C, an FFKM O-ring for temperatures up to 300 °C, or a flat PTFE gasket for operating temperatures up to a maximum of 350 °C.
In the moveable head design, the vessel is held in a support system that minimizes the physical effort required to handle these heavy components. A hoist attached to a support column provides a convenient means of lifting the head and cylinder out of the stand. Vessels equipped with a bottom drain valve will typically remain in the heater during use, but can be lifted out when necessary.
The fixed head support stand features hinged split rings that swing to either side, allowing the head to remain fixed to the stand. A pneumatic lift enables the cylinder to be raised and lowered. When lowered, the cylinder can be slid forward for cleaning and servicing.
The 30 and 40 liter vessels are available only in a fixed head design and come standard with operating temperatures up to 350 °C.
These large format vessels are typically used for pilot scale or for custom chemical production purposes, often with a variety of attachments added to the basic units.