• Miniature pressure regulator for gas instrumentation applications
• ANSI/ISA SP76.00.02 modular surface mount interface
• No threads in wetted area
• Critically dampened to improve flow stability
• Faster purge times

• Internally threadless design
• Large convoluted Hastelloy C-22 diaphragm
• Integral diaphragm stops prevent oil canning
• Seals available for nitrous oxide hydrocarbon applications
• Low dead volume
• General purpose for instrument/ analyser and semiconductor applications

• Negative pressure regulation
• Internally threadless design
• Convoluted Hastelloy C-22 diaphragm
• For delivery of low pressure gases from liquid sources
• White Knob indicates negative pressure

The 959 Series Regulator is a high pressure, tied diaphragm regulator.

The 959 Series tied diaphragm regulator provides shut off of corrosive or hazardous gases if a leak across the seat occurs. The added unique compression member loading eliminates threads in the wetted area, thus reducing particle entrapment.

Subatmospheric pressure control is available with the NPR959, a negative pressure 959 regulator.

• Tied diaphragm design to minimise regulator creep
• Internally threadless design
• Metal to metal diaphragm seal