Series AP is an ultra high purity (UHP) regulator for gas delivery in semiconductor and other clean industries. The series is available in low to high flow capacities, with some models offering a tied-diaphragm design. Available options include Hastelloy® internals for corrosion resistance, a tube stub weld fitting connection type, and various surface finishes.

Series AZ is an ultra high purity (UHP) regulator for gas delivery in semiconductor and other clean industries. The series is available in low to high flow capacities, with some models offering a tied-diaphragm design. Available options include Hastelloy® internals for corrosion resistance, and a tube stub weld fitting connection.

Series AK regulator was designed for general use in a wide variety of applications. The series is available in single or two stage models, with low to high flow capacities. Some AK regulator models offer a tied-diaphragm design. Available options include Hastelloy® internals for corrosion resistance, panel installation, and a variety of pressure gauges in psig/bar or MPa units.