About Us
About Bellofram Precision Controls
Bellofram Precision Controls engineers and manufactures precision pneumatic and electropneumatic products for OEM, industrial, automation, process-control, and HVAC applications. Since 1957, Bellofram has developed pressure-control, signal-control, and pneumatic-actuation technologies for applications where accuracy, stability, repeatability, and dependable performance are important.
Our product portfolio includes precision pressure regulators, air relays and volume boosters, I/P and E/P transducers, servo pressure controllers, filter-regulator- lubricators, stainless steel pressure-control products, and diaphragm air cylinders. These technologies support applications ranging from machine automation and process control to valve actuation, air preparation, pressure regulation, and electronic-to-pneumatic signal conversion.
Bellofram Precision Controls also works directly with OEMs and engineering teams when a standard product does not fully match the application. Existing platforms can be evaluated and adapted around requirements such as pressure range, flow, port size, electrical signal, accuracy, materials, mounting, actuation force, stroke, and available installation space.
Precision Control Experience Since 1957
Bellofram Precision Controls has been developing process-control products since 1957. That experience spans mechanical pressure regulation, pneumatic signal control, electropneumatic conversion, electronic pressure regulation, and diaphragm-based actuation.
Long-standing product families continue to support both new equipment and existing industrial systems, while newer control technologies address applications requiring electronic signals, closed-loop pressure control, specialized materials, or application-specific configurations.
Precision Pressure Regulators
Bellofram offers a broad range of mechanical pressure-reducing regulators for applications requiring controlled downstream pressure. Available families address requirements ranging from sensitive low-pressure control and compact regulation to high-flow service, back-pressure control, vacuum regulation, stainless steel construction, and application-specific pressure ranges.
Selecting the appropriate regulator involves factors such as inlet pressure, required outlet range, flow capacity, droop, relief requirements, media, port size, materials, mounting, and operating temperature.
Air Relays and Volume Boosters
Bellofram air relays and volume boosters support pneumatic systems where a control pressure must be reproduced, biased, amplified, or delivered with greater flow capacity.
Product families are available for different pressure ratios, flow requirements, relief capacities, and output-pressure relationships, supporting valve actuation, positioners, process-control systems, and other pneumatic applications.
I/P and E/P Electropneumatic Transducers
Bellofram I/P and E/P transducers convert compatible electrical signals into proportional pneumatic pressure outputs. I/P transducers convert current signals to pneumatic pressure, while E/P transducers use voltage-based electrical inputs.
Available transducer families support a variety of electrical signal, pneumatic output, enclosure, environmental, and certification requirements for control loops, valve actuation, automation equipment, and industrial process systems.
Servo Pressure Controllers
Bellofram servo pressure controllers provide electronically controlled pneumatic pressure regulation for applications requiring feedback-based control.
Available analog and digital controller families support different signal types, pressure ranges, flow requirements, housing configurations, and control-system integration needs.
Diaphragm Air Cylinders
Bellofram diaphragm air cylinders convert pneumatic pressure into linear mechanical force and motion using a flexible diaphragm rather than a conventional sliding piston seal.
Standard, Super, and Small Bore cylinder families are available for applications such as lifting, clamping, pushing, turning, valve actuation, web tensioning, and other linear-motion requirements.
Stainless Steel Pressure-Control Products
Bellofram Precision Controls also offers stainless steel regulators, filters, and filter-regulators for applications where corrosion resistance, material compatibility, or more demanding process environments must be considered.
Product selection should account for the specific media, pressure, temperature, flow, material, filtration, and installation requirements of the application.
Custom Pneumatic and Electropneumatic Solutions
Standard products do not fit every machine or process. Bellofram Precision Controls works directly with customer engineering teams to evaluate custom pneumatic and electropneumatic solutions.
Custom engineering can begin with an established Bellofram product platform and adapt it to the application. Depending on product type, requirements may include supply pressure, outlet pressure, port size, flow capacity, pressure ratio, electrical signal, accuracy, materials, cylinder stroke, force, equivalent bore diameter, mounting, dimensions, or environmental conditions.
A custom solution does not necessarily require a completely new product. In many cases, an existing design can be evaluated for modifications that better match the required operating conditions or mechanical interface.
Engineering Support for OEMs
OEM applications often require pressure-control components to fit within established dimensions, connect to existing pneumatic or electronic systems, and meet defined performance requirements across production equipment.
Bellofram Precision Controls can work with OEM engineering teams to review pressure, flow, signal, accuracy, material, mounting, packaging, and actuation requirements and determine whether a standard or customized configuration is appropriate.
Industries We Serve
Bellofram Precision Controls products support applications across assembly and manufacturing, automotive and transportation, food and beverage, HVAC, medical equipment, metal forming and stamping, oil and gas, OEM equipment, pulp and paper, renewable energy, and water and wastewater systems.
Because application requirements differ significantly among these markets, product selection should be based on the actual pressure, flow, signal, material, environmental, and mechanical requirements of the system.
Quality and Product Testing
Bellofram Precision Controls states that its products are produced and tested according to rigorous in-house procedures before shipment.
The Bellofram Precision Controls quality-management system is certified to ISO 9001:2015, providing a structured framework for quality management across its manufacturing and engineering operations.
Find the Right Bellofram Precision Controls Solution
Start with what the application must accomplish. Bellofram technologies can address pressure reduction, pneumatic signal control, increased flow, electrical-to-pneumatic conversion, electronic pressure regulation, compressed-air preparation, and pneumatic actuation.
From there, evaluate supply pressure, output range, flow, control signal, accuracy, port size, materials, temperature, mounting, dimensions, environmental conditions, and any application-specific performance requirements to identify an appropriate product or custom solution.
About Bellofram Precision Controls FAQs
What is Bellofram Precision Controls?
Bellofram Precision Controls is a manufacturer of pneumatic and electropneumatic pressure-control, signal-control, air-preparation, and actuation products for OEM, industrial, automation, process-control, and HVAC applications.
How long has Bellofram Precision Controls been in business?
Bellofram Precision Controls states that it has been active in process controls since 1957.
What products does Bellofram Precision Controls manufacture?
Product families include mechanical pressure regulators, air relays and volume boosters, I/P and E/P transducers, servo pressure controllers, filter-regulator-lubricators, stainless steel pressure-control products, and diaphragm air cylinders.
Does Bellofram manufacture precision pressure regulators?
Yes. Bellofram manufactures mechanical pressure regulators for a range of pressure, flow, size, material, and application requirements.
What is a pneumatic air relay?
A pneumatic air relay uses a pneumatic input signal to control an output pressure. Depending on the design, it can reproduce, amplify, or modify the relationship between the input and output pressure.
What is a pneumatic volume booster?
A volume booster uses a pneumatic control signal to provide greater downstream airflow for a compatible actuator, valve, or pneumatic system.
What is an I/P transducer?
An I/P transducer converts an electrical current input into a proportional pneumatic pressure output. A common industrial example is converting a 4-20 mA signal into a pneumatic pressure signal.
What is an E/P transducer?
An E/P transducer converts a compatible electrical voltage input into a proportional pneumatic pressure output.
Does Bellofram offer electronic pressure controllers?
Yes. Bellofram offers analog and digital servo pressure controller families for applications requiring electronically controlled pneumatic pressure regulation.
What are Bellofram diaphragm air cylinders?
Bellofram diaphragm air cylinders are pneumatic actuators that convert air pressure into linear force and movement using a flexible diaphragm. Standard, Super, and Small Bore cylinder families are available.
Does Bellofram offer stainless steel pressure-control products?
Yes. Bellofram offers stainless steel regulators, filters, and filter-regulator products for compatible applications requiring corrosion-resistant construction or specific material compatibility.
Does Bellofram Precision Controls offer custom engineering?
Yes. Bellofram works directly with customer engineering teams to evaluate custom pneumatic and electropneumatic solutions when a standard product does not fully meet the requirements of an application.
What types of Bellofram products can be customized?
Bellofram's custom engineering process can support mechanical pressure regulators, air relays and volume boosters, I/P and E/P transducers, servo pressure controllers, and diaphragm air cylinders. Available modifications depend on the product family and application.
Does a custom Bellofram product require a completely new design?
Not necessarily. An established Bellofram product can often be evaluated for changes to pressure range, flow capacity, ports, electrical signals, materials, dimensions, mounting, actuation, or other application requirements.
Does Bellofram work with OEMs?
Yes. Bellofram Precision Controls supports OEM applications and works with engineering teams to evaluate pneumatic and electropneumatic components around the performance, interface, dimensional, and packaging requirements of the equipment.
What industries does Bellofram Precision Controls serve?
Markets include assembly and manufacturing, automotive and transportation, food and beverage, HVAC, medical equipment, metal forming and stamping, oil and gas, OEM equipment, pulp and paper, renewable energy, and water and wastewater.
Is Bellofram Precision Controls ISO 9001 certified?
Yes. Bellofram Precision Controls states that its quality-management system is certified to ISO 9001:2015.
Are Bellofram products tested before shipment?
Bellofram Precision Controls states that its products are produced and tested according to rigorous in-house procedures before shipment.
Where is Bellofram Precision Controls located?
Bellofram Precision Controls lists its U.S. corporate location at 8019 Ohio River Boulevard in Newell, West Virginia.
How do I choose the right Bellofram product?
Start with the required function, such as pressure reduction, pneumatic signal control, increased airflow, electrical-to-pneumatic conversion, servo pressure regulation, air preparation, or pneumatic actuation. Then evaluate pressure, flow, signal, materials, port size, accuracy, mounting, dimensions, temperature, and environmental requirements.
What information should I provide for a custom application?
Useful information can include supply pressure, required output pressure, flow, media, port size, electrical signal, accuracy, materials, operating temperature, available space, mounting requirements, force, stroke, and the specific performance requirement a standard product does not currently meet.
Why Choose Bellofram Precision Controls
Engineering superior solutions is our business.
Whether the need is to increase safety, productivity, reliability, or all of these, we create products that fit your space, do what you need them to do, and perform for long periods of time with no need for further attention. Historically, our products are so reliable, you’ll rarely have to give them a second thought after purchase and installation. This level of peace of mind just may be the ultimate product we sell.
