product manual:

        1151LT flange type liquid level transmitter

        The mounting flange standard of 1151LT flange type liquid level transmitter is in accordance with ANSI. The flange has 3" and 4" specifications. The flange grade is divided into 150LB (2.5MPa) and 300LB (5.0MPa). If the user adopts GB9116-88 standard, please specify DN=80, 100, PN=2MPa.

        Wetted diaphragm materials include 316L, Hastelloy C-276, Monel, and tantalum. If not specified by the user, it is supplied with 3 150LB mounting flange and liquid contact diaphragm material 316L.