Coalescing Filters

Part No: DD780

Product Type: In‑line primary coalescing filter element

Filtration Rating: 1 μm, residual oil content ≤0.6 mg/m³ 

Rated Flow: 78 Nm³/min

Max Working Pressure: 16 bar

Operating Temperature: ‑20℃ ~ +65℃

Dimension: Φ90 mm, Length 610 mm, screw‑thread mounting, Weight 0.81 kg, with O‑ring seal kitshop.

Filter Media: Gradient multi‑layer borosilicate glass‑fiber coalescing media, plastic support cage, rubber end seals

Recommended Service Life: 8000 working hours or 1 year. Replace when pressure difference reaches 0.08 bar. Install upstream of PD780 fine filter.

Main Features

Screw‑thread cartridge design for easy replacement. Replace O‑rings together to avoid bypass leakage.

Gradient multi‑layer glass‑fiber media traps solid particles above 1 μm, condensate and liquid oil mist as first‑stage pre‑filtration.

Rigid plastic support cage resists high‑speed airflow impact and prevents media deformation for long‑term continuous‑duty compressor operation.

Optimized media delivers low initial pressure drop to reduce system energy consumption. Good resistance to condensate and aging.

Reliable rubber end seals eliminate bypass airflow and guarantee full filtration efficiency.

Mounted upstream of PD780 element to protect downstream high‑precision coalescing cartridge and extend its service life.

Application Industries

Screw compressor post‑treatment systems, general manufacturing, spray painting, mining and food‑processing industries. Performs primary pre‑purification by removing particulates and liquid oil‑water.

Product Summary

It provides compressed‑air pretreatment, intercepts solid contaminants, condensate and liquid oil mist, safeguards downstream PD780 fine‑filter and stabilizes air‑system quality.