Simple-to-operate, pneumatic pressure controller that senses pressure with a 316 SST Bourdon tube. Ideal for installations requiring rugged construction, dependable operation
and a minimum of parts.

• Control options include throttle, throttle with low-cutout, and snap
• Bourdon tube pressure ratings up to 7,500 psig
• Field-reversible controller action
• Orifice sizes to accommodate most actuators
  

Pneumatic-operated unit that provides pressure control in proportional only, proportional
plus integral (reset), differential gap, or transmitter modes. Standard pressure ratings up to 10,000 psig with 316 SST Bourdon tube sensing elements.

• Field-reversible direct or reverse action
• Ambient operating temperature range -40°F to 160°F (-40°C to 71°C)
• Weather-resistant aluminum enclosure
• Optional over-travel stop, anti-reset windup, diaphragm seal, differential pressure cell and remote set point
  

Series 4900 pneumatic pressure controllers combine reliable, low-emission operation with service-enhanced design. Provides control in proportional-only, proportional plus integral (reset), differential gap or transmitter modes.

• Flush-mounted internals and open design allow easy access and repair 
• Removable door
• Easy, field-reversible action
• Reduced leak paths minimize bleeding of valuable gases
• NACE MR0175-2002 compliance with optional diaphragm seals to isolate sensing element