ProVia Single Brake Chamber PRO7140330 Single Diaphragm Air Brake Chamber for Heavy Duty Truck Air Brake System

The ProVia ProVia Single Brake Chamber (part number PRO7140330) is a replacement component for the air brake and air suspension systems of heavy-duty trucks, buses and semi-trailers. It is built to original equipment specification from quality materials, so it installs on the original mounting points and performs reliably throughout the service life of the vehicle. Key ratings include Max Working Pressure 13 bar, temperature range -40°C ~ +80°C, Stroke 57.1 mm, push‑rod length 235 mm, clamp band diameter Ø212 mm.

The single-diaphragm design converts air pressure into a strong, linear push-rod force for the service brake, with no parking spring, which keeps the unit light and simple. The internal breathing valve prevents moisture build-up and protects the diaphragm for a long, trouble-free service life.

Every unit is manufactured to original equipment specification and inspected before it leaves the factory, so it matches the fit, function and durability of the original part. Sealed, vibration-tested construction keeps performance stable in the heat, dust, road salt and constant vibration found on commercial vehicles, and standard interfaces make installation and maintenance straightforward. Spare parts, technical data and fitting advice are available on request.

• Max Working pressure:13 Bar: Temperature range -40°C ~ +80°C.
• Stroke:57.1 Mm: Push‑rod length 235 mm, clamp band diameter Ø212 mm.
• Port Thread M16*1.5: Mounting yoke included.
• Single‑diaphragm Structure: Only for service brake, no spring parking brake function.
• ProVia Aftermarket Quality: 1‑year warranty, with internal breathing valve IBV for longer service life.

The chamber is fitted to the axles of heavy-duty trucks and semi-trailers that use drum or disc brakes and separate parking chambers. It is the correct replacement for worn service-brake chambers and is widely used by fleets and workshops carrying out routine brake maintenance.

Every unit is packed in a neutral export carton with foam protection so that ports, connectors and levers arrive free from damage. OEM cartons and private labels are available on request, and each carton is labelled with the part number for simple warehouse handling. All units are produced to original equipment specification and inspected before shipment; a twelve-month quality warranty and full technical support are provided, and mixed containers can be supplied for distributors and repair workshops. Please contact us for samples, volume discount pricing and confirmed lead times.