Markets & Applications


Fulton Bellows is a trusted partner in the medical industry. Our cutting-edge products have found diverse applications, ranging from autoclaves and patient suction devices to advanced surgical procedures.


Our products play a key role in autoclaves, and are crucial for maintaining sterility in medical environments. By precisely sensing autoclave pressure, our bellows valve opens when pressure increases during the working cycle, allowing efficient steam circulation. Once the cycle is complete, the valve closes, ensuring a hermetic seal is maintained within the container. This seamless operation ensures the sterilization and preservation of medical instruments, providing a reliable solution for healthcare professionals.

In the realm of patient care, Fulton Bellows offers a specialized pressure regulator designed for suction devices. Our pressure regulator enables healthcare providers to precisely control the suction level, ensuring optimal conditions for various medical procedures. The regulator’s accuracy and reliability enhance patient safety and comfort during suction-based treatments. Our commitment to using materials that can be sterilized and our focus on hermetically sealing the device ensures a hygienic and contamination-free environment for patients.

Another remarkable application of our bellows technology lies in heat exchangers used during surgical procedures. In a specific device where human blood flows around the outside of the bellows while saline draws away or restores heat. Our products play a crucial role in maintaining the desired thermal conditions by contributing to optimizing the temperature balance, safeguarding patient well-being during intricate surgeries.

Basic and Common Applications

Shaft Seal

Prevents leakage around a revolving shaft. Spring pressure holds nose of seal against shoulder on shaft. Another type rotates with shaft and seals against a stationary plate.

Pressure Motors

Convert pressure effects into controlled movement or force. Pressure may be applied inside the bellows or outside the bellows in a cup structure, the latter being preferred. The floating head is usually provided with a limit stop when overload protection is needed.

Flexible Joint

Provides a means to seal a flexible joint or mechanical movement of levers, linkage, etc. against leakage where the movement must be conveyed outside enclosure. “P” optimum position of pivot.

Aneroid Assemblies

An aneroid assembly is a pressure motor where one side of a bellows assembly (inside the assembly illustrated) is evacuated to form a constant reference pressure against which the changing pressure on the other side is measured and used to produce predictable stroke. A spring for rate control and a stop to prevent excessive stroke from the resulting one atmosphere pressure differential usually are required.

Expansion Chamber

This type of assembly is employed to absorb thermal or pressure expansion. With suitable heads, it may be used as a reservoir for a liquid or gas. Examples: Oil reservoir for electrical cable joint and thermal expansion compensators on oil-filled transformers.

Thermostatic Motors

Similar to pressure motors. Pressure supplied by a sealed fill of thermo-sensitive liquid or gas. Thermal effect may be received either on the bellows element direct or at a remote bulb for transmission through flexible tubing. Widely used to operate valves, switches, etc., in response to temperature changes.

Remote Transmission

Two bellows assemblies joined by a tube for hydraulic transmission of motion or power. With bellows system solid filled, linear motion of one bellows is transmitted instantly and in equal degree to remote bellows, both bellows being provided with limit stops when overload protection is needed.

Expansion Joints

Packless and leakless construction is used to absorb thermal expansion of pipe lines carrying steam, water, etc., or, to absorb vibration or provide a flexible connection.

Packless Construction

Diagram illustrates packless valve construction. Same principle is used to seal steam movement or adjustment in many types of apparatus.