Description
Overview
The Type 390 Large Flow Capacity Stainless Steel Pressure Regulator is designed for demanding applications that require stable, accurate pressure regulation and high flow capacity. Built with corrosion-resistant 316L stainless steel construction, the Type 390 is adaptable to offshore, process control, and other harsh industrial environments.
Large 3/4″ or 1″ NPT porting helps maintain stable and repeatable output pressure, even during wide supply pressure variations from large-volume valve actuators. Oversized valving allows the regulator to achieve high flow rates with minimal pressure drop.
The Type 390 is ideal for applications requiring rugged stainless steel construction, reliable pressure control, low air consumption, and high flow performance.
Key Features
- All 316L stainless steel construction
- High flow capacity up to 400 scfm
- 3/4″ or 1″ NPT porting
- Two 1/4″ NPT gauge ports
- Soft seat self-relieving design
- Stable and repeatable output pressure
- Oversized valving for minimal pressure drop
- Low air consumption
- Low temperature option available
- Non-relieving option available
- ATEX certification option available
- Designed for offshore and harsh industrial environments
Performance Characteristics
- Output Ranges: 0-30 psig, 0-60 psig, 0-100 psig, 0-150 psig, 0-200 psig
- Maximum Supply Pressure: 290 psig (20 bar)
- Maximum Flow Capacity with 3/4″ Ports: 350 scfm (9,905 Nl/min)
- Maximum Flow Capacity with 1″ Ports: 400 scfm (11,320 Nl/min)
- Cv Value: 9.0 for 3/4″ ports, 10.0 for 1″ ports
- Exhaust Capacity: 2.0 scfm (56.5 Nl/min)
- Air Consumption: 4 scfh (2 Nl/min) maximum
- Ambient Temperature Limits: -40°F to 200°F (-40°C to 93°C)
- Low Temperature Option: -62°F to 194°F (-52°C to 90°C)
- Operating Media: Air, inert gas, and sweet natural gas
- Weight: 14.5 lbs (6.6 kg)
- Body Material: 316L stainless steel
- Other Materials: Nitrile and Inconel
These characteristics support high-flow pressure regulation, stable output control, and dependable performance in harsh process control environments.
How to Select the Right Configuration
Selecting the correct Type 390 configuration depends on pressure range, flow demand, port size, and operating environment:
- Select the 0-30 psig range for lower pressure control applications
- Select the 0-60 psig range for standard pneumatic control systems
- Select the 0-100 psig range for general industrial pressure regulation
- Select the 0-150 psig range for higher output pressure requirements
- Select the 0-200 psig range for the highest available Type 390 output range
- Choose 3/4″ NPT porting for high-flow systems with moderate connection requirements
- Choose 1″ NPT porting for maximum flow capacity and reduced pressure drop
- Select the Low Temperature option for cold-weather or outdoor installations
- Choose the Non-Relieving option for constant flow or downstream pressure relief applications
- Select the ATEX option for applicable hazardous-area requirements
- Add a pressure gauge when local outlet pressure indication is required
For additional guidance:
Applications
The Type 390 stainless steel pressure regulator is used in high-flow applications requiring stable pressure control and durable stainless steel construction:
- Large-volume valve actuator control
- Industrial process control systems
- Offshore oil and gas applications
- Petrochemical processing
- Natural gas control systems
- High-flow pneumatic control panels
- Harsh environment air regulation
- Corrosive industrial environments
- Process automation equipment
- Instrumentation air supply systems
Explore more applications: Industries We Serve
Technical Resources
FAQs
What is the Type 390 pressure regulator used for?
The Type 390 is used for high-flow pressure regulation in demanding pneumatic and process control applications, including large-volume valve actuator control and harsh industrial environments.
What port sizes are available for the Type 390?
The Type 390 is available with 3/4″ NPT or 1″ NPT inlet and outlet porting.
What output pressure ranges are available?
The Type 390 is available in 0-30 psig, 0-60 psig, 0-100 psig, 0-150 psig, and 0-200 psig output ranges.
What is the maximum flow capacity of the Type 390?
The Type 390 provides up to 350 scfm with 3/4″ ports and up to 400 scfm with 1″ ports.
Is the Type 390 available with ATEX certification?
Yes. The Type 390 is available with an ATEX certification option for applicable hazardous-area installations.
