Long-stroke rolling diaphragms are thin-walled, special sensitive diaphragms made from highly elastic materials with fabric rein-forcement.Along with this standard design type BFA, the long-stroke roll-ing diaphragms can also be supplied made in special tools without fabric, type BFAO.
Strengths
•Low, almost constant resistance to movement over the entire stroke
Considerably greater stroke lengths in comparison to conven-tional diaphragms with the same diameter
Effective area remains the same over entire stroke
No additional resistance to movement on starting or on change in direction of movement; no notch point in operating range
Low requirements on piston and cylinder in comparison to lip seals
Applications
Pressure switches;pressure transducers