COLOSSUS DC Diaphragm Coupling, Half-Wrap Spacer Type (API 671)

Disc (diaphragm) coupling with half-wrap shaft design and fixed spacer length, which reduces extra load on the driving and driven shafts. Single diaphragm, double diaphragm, inverted and guarded versions. Lighter than the DML series at the same size, with phosphated surface for better rust protection. Designed to API 671 according to the manufacturer. Common models A, B, C and D.

Key features

• Half-wrap shaft reduces load on drive and driven ends
• Suitable for high temperature (below 300 °C) and corrosive areas
• Compensates axial and angular misalignment, absorbs vibration
• No noise, zero backlash, constant speed, no lubrication
• Lighter than DML, phosphated surface

Technical data

Materials

• Hubs and spacer: 40Cr or 2Cr13
• Membrane pack: 304 with 40Cr or 2Cr13
• Bolts: 35CrMo, 2Cr13 or 40Cr

Applications

• Pumps and compressors in petroleum and petrochemical
• Natural gas and metallurgy
• Marine and steel
• Power and nuclear
• Paper and mining

Standards

Reference standards listed by the manufacturer: API 671, JB/T 9147. Certificates and test reports are provided with the quotation where applicable.

Supplied on quotation and configured to your requirements (size, materials, operating conditions). Manufacturer data sheet and dimension tables available on request.