The KCY series is designed for use in applications requiring constant outlet pressure even with wide variations in inlet pressure. This two-stage regulator is comparable to two single-stage regulators connected in series. The first stage is factory set to reduce the inlet pressure to 500 psig (34.4 bar). The second stage can be adjusted with the handle to achieve the required outlet pressure.

This two-stage arrangement minimizes the supply-pressure effect caused by fluctuating inlet pressure, such as with a depleting gas cylinder. As inlet pressure drops below the setting of the first stage, the regulator then functions as a single-stage regulator. The first-stage pressure setting can be reduced while monitoring the pressure at the interstage port, but lower flow may result.

Features

• Convoluted, nonperforated diaphragm
• Metal-to-metal diaphragm seal
• Excellent set-point stability
• Supply-pressure effect of approximately 0.01%
• High-flow, dual-gauze type filter positively retained in inlet port

Technical Data

Maximum Inlet Pressure

• 3600 psig (248 bar)
• 6000 psig (413 bar)

Pressure Control Ranges

• 0 to 10 psig (0.68 bar) through 0 to 500 psig (34.4 bar)

Flow Coefficient (CV)

• 0.06 and 0.20
• 0.50 also available

Maximum Operating Temperature

• 176ºF (80ºC) with PCTFE seat
• 392ºF (200ºC) with PEEK seat
• 212ºF (100ºC) with PEEK seat and maximum inlet pressure greater than 3600 psig (248 bar)

Weight

• 4.2 lb (1.9 kg)

Ports

• 1/4 in. female NPT inlet, outlet, and gauge ports