Description
Overview
The Type 340 Pressure Regulator is designed to provide accurate, constant pressure control under variable flow rates and supply pressures. Built in a compact, lightweight housing, the Type 340 is ideal for applications where space is limited but stable pressure regulation is required.
Available in 1/4″ NPT and 1/2″ NPT port sizes, the Type 340 supports both standard and higher-flow pneumatic control applications. Its rugged die-cast aluminum construction, chromate conversion coating, and baked epoxy finish provide durable performance in industrial environments.
The Type 340 is well suited for instrument air systems, pneumatic control panels, valve actuation, and general industrial pressure regulation where reliable output pressure and low droop performance are important.
Key Features
- Accurate pressure regulation in a compact package
- Available in 1/4″ NPT and 1/2″ NPT port sizes
- Stable output pressure under variable flow conditions
- Low droop performance at higher flow levels
- Aspirator design helps maintain downstream pressure
- Self-relieving operation
- Low air consumption
- Compact, lightweight housing
- Durable die-cast aluminum construction
- Chromate conversion coating with baked epoxy finish
- Tapped exhaust option available
- Panel mount option available
- Low temperature option available
- ATEX option available
Performance Characteristics
- Port Sizes: 1/4″ NPT or 1/2″ NPT
- Gauge Ports: Two 1/4″ NPT ports
- Output Pressure Ranges: 0-30 psig, 0-60 psig, 0-120 psig
- Maximum Supply Pressure: 250 psig (17 bar)
- Cv Value: 0.5 for 1/4″ NPT, 2.5 for 1/2″ NPT
- Exhaust Capacity: 0.1 scfm (2.83 Nl/min) with downstream pressure 5 psig above setpoint
- Sensitivity: 1 inch water column
- Air Consumption: Less than 5 scfh (2.5 Nl/min)
- Supply Pressure Effect: Less than 0.25 psig for 1/4″ NPT and less than 0.5 psig for 1/2″ NPT for a 25 psig supply variation
- Operating Temperature: 0°F to 160°F (-18°C to 71°C)
- Low Temperature Option: -62°F to 194°F (-52°C to 90°C)
- Operating Media: Air, inert gas, and sweet natural gas
- Weight: 1.15 lbs (1/4″ NPT) and 1.38 lbs (1/2″ NPT)
These performance characteristics support stable pressure regulation, repeatable output control, and reliable operation in compact industrial pneumatic systems.
How to Select the Right Configuration
Selecting the correct Type 340 configuration depends on required flow capacity, pressure range, installation style, and environmental conditions.
- Select 1/4″ NPT porting for standard instrument air and pneumatic control applications.
- Select 1/2″ NPT porting for higher-flow pneumatic systems.
- Choose the 0-30 psig range for low-pressure instrumentation.
- Choose the 0-60 psig range for general industrial air regulation.
- Choose the 0-120 psig range for higher pressure pneumatic applications.
- Select the tapped exhaust option when captured exhaust is required.
- Select the knob option when hand adjustment is preferred.
- Choose the low temperature option for cold-weather installations.
- Select the non-relieving option for constant-flow or downstream pressure relief applications.
- Choose panel mount when installing the regulator in an enclosure or control panel.
- Select stainless steel trim for enhanced corrosion resistance.
- Choose the ATEX option when hazardous-area compliance is required.
For additional guidance:
Applications
The Type 340 Pressure Regulator is used wherever accurate, stable air or gas pressure control is required without integrated filtration.
- Instrument air pressure regulation
- Control valve air supply
- Valve positioners
- Pneumatic actuators
- I/P and E/P transducers
- Process automation systems
- Industrial machinery
- OEM pneumatic assemblies
- Control panels
- Air preparation systems
- General industrial pressure control
Explore more applications: Industries We Serve
Models & Configurations
Type 340 Ordering Structure
340 – [Port Size] [Range] [Options]
Port Sizes
- B = 1/4″ NPT
- D = 1/2″ NPT
Pressure Ranges
- A = 0-30 psig (0-2 bar)
- B = 0-60 psig (0-4 bar)
- C = 0-120 psig (0-8 bar)
Available Options
- E = Tapped Exhaust
- K = Knob with stainless steel stem
- L = Low Temperature
- N = Non-Relieving
- P = Panel Mount
- S = Stainless Steel Trim
- X = ATEX 2014/34/EU
Technical Resources
FAQs
What is the Type 340 pressure regulator used for?
The Type 340 provides accurate, stable pressure regulation for instrument air, pneumatic controls, valve actuators, and industrial automation systems.
Does the Type 340 include filtration?
No. The Type 340 is a pressure regulator only. For combined filtration and regulation, use the Type 330 or Type 335.
What port sizes are available?
The Type 340 is available with 1/4″ NPT and 1/2″ NPT porting.
What pressure ranges are available?
The Type 340 is available in 0-30 psig, 0-60 psig, and 0-120 psig pressure ranges.
Is a non-relieving version available?
Yes. A non-relieving option is available for constant-flow applications or systems with downstream pressure relief.
