Two models : PSLT : one piece,low temperature unit. PSHT : cast iron high temperature unit with removable Pyrex window. Gasketed, cooling air connection.

• 两种类型：PSLT一片，低温单元。PSHT铸铁高温单元配有可拆卸耐温玻璃窗。垫圈，冷却风连接。