Oil Purifiers & Hebei Sinft Filter Co., Ltd.

Why Use An Oil Purifier Instead Of Only Equipment Filters→

Many hydraulic systems rely only on built-in small filter elements. However, this approach has significant inherent limitations that can compromise system performance and longevity.

Built-in filters have limited dirt holding capacity due to small size and limited filtration area
Hydraulic shock during equipment reversal can dislodge captured particles, reducing effective filtration efficiency
Oil cleanliness at delivery is often insufficient ?new oil typically NAS 9?2, heavy industry NAS 5?
Bypass filtration with independent pump systems provides stable pressure and larger filtration area
Oil purifiers offer better particle adhesion and continuous 24/7 operation capability

Limited Dirt Holding Capacity

Built-in filters are small with limited filtration area, easily becoming clogged and requiring frequent replacement.

Hydraulic Shock Impact

When equipment reverses direction, hydraulic shock can dislodge captured particles and reduce filtration efficiency.

Insufficient Oil Cleanliness

New oil typically NAS 9?2, heavy industry 5?, while power plant EH systems require NAS ?.

Bypass Filtration Advantage

Oil purifiers have independent pump systems with stable pressure and larger filtration area.

Oil Cleanliness Standards

NAS Classification at Delivery

New Oil

NAS 9-12

Requires Purification

Heavy Industry

NAS 5-8

Needs Improvement

Power Plant EH

NAS ?

High Precision Required

Product Range

SINFT Oil Purifier — 15 Series

Complete range from portable maintenance units to ultra-high voltage transformer oil treatment systems

Product Lines

Alternative Solutions

Direct replacements for international brands ?better pricing, faster delivery, equal performance

CJC Oil Purifier Replacement

Direct compatible replacements for all CJC series oil purifiers. Equal efficiency with corrosion-resistant stainless steel piping and Viton seals. Better pricing and faster delivery worldwide.

Triple R Oil Purifier Replacement

SINFT offers equivalent alternatives for all Triple R oil purifier models. Enhanced local technical support, quick parts supply, and competitive pricing for industrial applications.

Oil Cleanliness Particle Counter

Laser particle counting instrument displays real-time NAS 1638, ISO 4406, and GJB 420A cleanliness codes. Essential for verifying oil purity and monitoring system health on-site.

Core Advantages

Why Choose SINFT Oil Purifiers?

SINFT oil purifiers provide superior filtration performance with independent systems that overcome the limitations of built-in filters.

Advantage 01

Independent Pump System

Stable pressure unaffected by equipment hydraulic shock. Continuous 24/7 operation without impacting main system.

Advantage 02

Large Filtration Area

Greater dirt holding capacity means fewer filter changes, lower maintenance costs, and longer service intervals.

Advantage 03

Multi-Stage Filtration

Pre-filter + fine filter + vacuum dehydration for comprehensive protection against particles, water, and gases.

Advantage 04

Online/Offline Dual Mode

Can operate 24 hours continuously without affecting production. Flexible deployment for various scenarios.

Advantage 05

Full Series Coverage

19 series covering all industrial applications — from portable maintenance units to ultra-high voltage transformers.

Advantage 06

International Brand Replacement

Direct replacements for CJC, Triple R and other imported oil purifiers with better pricing and faster delivery.

Working Principle

How Oil Purifiers Work

Understanding the core technologies behind effective oil filtration

Oil In → Pre-filter → Heater → Vacuum Chamber → Fine Filter → Oil Out

Vacuum dehydration: Negative pressure lowers water boiling point for rapid evaporation
Multi-stage filtration: Pre-filter removes large particles, fine filter captures micro-particles
Precision可达NAS 4-6: Cleanliness level suitable for precision hydraulic systems

Result: Water Content from 500ppm → Below 10ppm

Vacuum dehydration can reduce water content from 500ppm to less than 10ppm in a single pass.

Oil+Water → Coalescing Filter → Demulsification → Separation → Water Discharge

Coalescing effect: Small water droplets merge into larger ones
Demulsification: Breaks oil-water emulsion structure
Gravity separation: Water settles to bottom and is automatically drained
Suitable for: Hydraulic oils, lubricants, turbine oils with emulsified water