The molded polysulfone King Instrument 7330 series rotameters are offered with direct reading scales for flow rates from 0.1-1.0GPM to 10-100GPM (water). The connections are vertical (in-line type) with PVC or PVDF union ends which greatly simplify installation and maintenance. With the Teflon float option, the King Instrument 7330 series rotameter is excellent for applications where no metal is preferred.

PVC fittings are standard and are rated for a maximum temperature of 130°F (54°C) and maximum pressure of 150 psig for sizes 41-72W and 125 psig for sizes 90-103W. PVDF fittings are available as an option, rated for a maximum temperature of 200°F (93°C) and a maximum pressure of 150 psig for 41-72W and 125 psig for sizes 90-103W. Ambient temperature range is 33 to 125°F (1 to 52°C).

An optional latching reed switch is available for alarm applications. The switch is SPDT type with maximum contact voltage of 100VDC, maximum contact current of 0.2A, and maximum contact power of 4W. Breakdown voltage is 200VDC. The switch is classified as a simple apparatus by UL, FM, etc. and may be suitable for hazardous use when connected to an intrinsic safety barrier.