Stauff Off-Line and By-Pass Filters

Off-Line Filter

OLS Series

Description:

Stauff Off-line and By-pass Filter Systems, OLS / BPS, are designed to keep hydraulic and lubrication systems free of particle and water contamination. Stauff OLS and BPS units utilize the Radial Micro Filtration Systems concept for the removal of contamination from hydraulic and lubrication systems. Desiccant Air Breathers, which clean and dry the air entering the reservoir, are also part of this contamination removal system.

Stauff RMF Filtration Systems will provide optimal system cleanliness for today’s sophisticated hydraulic and lubrication systems.

Technical Specification

• Construction – OLS (off-line filter system with integrated motor / pump unit), BPS (by-pass filter system)
• Housing – Anodized aluminum
• Seals – NBR (Buna-N®)
• Connection – 1/4″ and 1/2″ BSP (for BPS) 3/8″, 1/2″, 3/4″ BSP and 18L (for OLS)
• Differential pressure – Max 90 PSI (6.2 bar) across element
• Nominal flow – Between 0.55 US GPM (2.1 l/min) and 4.5 US GPM (17 l/min)
• Temperature range: Max 176°F (80°C) media temperature (at a viscosity between 20 and 160 cSt)
• Max system volume – Up to 2853 gal (10.800 liter)
• Bypass valve (integrated in filter head) – 90 PSI (6.2 bar) for all types
• Clogging indicator – Pressure gauge, filled with glycerin
• Media – Mineral- or lubrication oil, others on request
• Motor types (for OLS) – Several motor types available

Technical Data

Water Absorbing Off-Line Filter

OLSW Series

RMF Systems radial micro filter units are characterized by their extremely efficient filter elements which are rated to 0.5 micron.

Specially designed for industrial hydraulic installations the RMF off-line filters are available in single or multiple housing configurations. The off-line filter units can easily be mounted to new and existing hydraulic installations.

By means of an integrated motor/pump unit and an off-line filter, the oil is pumped from the reservoir through the filter unit and after filtering the oil is then returned to the tank.

Water Absorbing

RMF Water absorbing filters are off-line units that use special water absorbing spin-on filter elements as a pre-filter. The fluid is pumped through the pre-filter which removes most water and larger solid contamination, in the second stage the fluid passes through the RMF micro filter where final water removal takes place as well as solid removal down to 0.5 micron.

Technical Data OLSW

By-Pass Filter

BPS Series

STAUFF BPS by-pass filter can be used for OEM first fit applications as well as for retro-fitting. The filtration is done in a by-pass configuration from the main hydraulic system. The STAUFF BPS filter systems are available with one filter housing (BPS-1A, maximum flow 2,1 l/min / 0.6 US GPM) or with two filter housings (BPS-2A, maximum flow 4,2 l/ min / 1.1 US GPM) at a viscosity between 20 and 160 cSt (100-750 SUS).

The RMF by-pass filter units are especially designed for mobile applications in hydraulic and/or transmission systems.

In the absence of a pumped system, the oil is drawn from the main system by means of a specially designed and integrated flow valve. The amount of oil extracted at any one time is insignificant therefore ensuring that it will not affect the working of the main system.

Most commonly used biodegradable oils in the mobile sector are suitable for filtration with RMF filter elements.

RMF Systems have been applied on a wide range of mobile hydraulic machinery, cleaning fluids to levels not previously possible with conventional filtration methods, resulting in dramatic increases in component life.

Successful applications include:

• Excavators
• Wheel loaders
• Forestry machines
• Asphalting machines
• Cement mixers
• Aircraft ground support machinery
• Agricultural machines

Technical Data

Dimensions in inches (mm)

Mini Water Vac Vacuum Dehydration Unit

MWV Series

The Mini Water Vac is a designated oil purification unit which can be applied directly to various types of machine reservoirs. It dehydrates and cleans most types of oils such as lubricating, hydraulic, transformer, and switch oils. The Mini Water Vac is a self-regulating filtration unit which removes particles, gas, and water. The purified oil satisfies the most stringent quality requirements.

Simple Operation
The Mini Water Vac neither removes or alters oil additives. The water removal process is based on pure vacuum evaporation inside a vacuum chamber at a maximum temperature of 149°F (65°C). Solid particle removal is achieved through a well proven RMF Systems micro filter.

The Mini Water Vac does not require continuous supervision while operating. Once the unit is connected and commissioned, oil purification is a semi-automatic process. Desired oil temperature can be selected via the integrated heater thermostat. The dehydration and filtering process is fully automatic and is controlled via the PLC. The only manual action required is the emptying the pre-condenser bowl and the waste water container which are equipped with float switches to prevent overflow.

Heated Off-Line Filter

OLSH Series

The electric pre-heating ensures that the cold and/or high viscosity fluid is brought to a temperature with a suitable filtration viscosity. Off-line filters with pre-heating can be applied to new or existing installations. The integrated pump-motor combination draws fluid from the reservoir, pumps it through a heating element, filters the fluid and returns it to the reservoir.

Advantages

• Extremely clean oil due to the high filtration efficiency ß0.5 > 200, ß2 > 2330
• Prevention of channel forming by radial filtration direction
• Increased flow capacity
• Increased dirt holding capacity
• Large water holding capacity
• Compact and easy maintenance design
• Longer usage life for oil and components

Technical Data Heated Off-Line Filters

By-Pass Lube-Oil Filter

BPLS Series

Maintenance is essential for the efficient functioning of engine equipment. However, it is always a critical decision between the quality of the maintenance and the costs involved. Optimal maintenance efficiency combines maximum achievement of the maintenance goal (protection and prolonged usage life of the object) with minimal use of means (costs). The Stauff RMF by-pass filter is unique in that it not only achieves the goal, but saves on costs.

The Stauff RMF by-pass filter keeps the oil clean, resulting in significant technical, environmental and financial benefits thanks to reduced wear and tear on equipment and machines and prolonged oil life time.

Stauff RMF systems BPLS by-pass filters are used as an additional micro filter connected in by-pass to the conventional main stream filters on engines (and automatic transmissions.) Most contamination is much smaller than 15 micron in size, but full flow filters generally do not filter below this level. This results in a lot of harmful contamination passing through these filters and remaining in the system. Stauff RMF Systems by-pass filters are capable of filtering down as low as 0,5 micron without detriment to the lubrication circuit. (see schematic)

Whatever the application, the benefits of the Stauff RMF Systems by-pass filters are all based on maintaining a higher quality and cleanliness level of the oil and thereby avoiding the multiple problems that can be caused by fluid contamination.

The benefits are many, and can be broken into three categories :

• Technical benefits
• Environmental benefits
• Financial benefits

Specifications BPLS Filters

Replacement Filter Elements

SRM Series

Cellulose elements

The RMF Systems cellulose filter elements are unique in their design. They consist of several hundred layers of long fiber cellulose which are wound on a perforated center tube. The micro filter element works as a fine filter through which oil passes radially, from the outside to the inside, trapping solid particles throughout all the layers of cellulose. The long fiber cellulose is also capable of absorbing water, adding the benefit of moisture removal from the oil. RMF Systems cellulose elements are extremely efficient and have a large dirt holding capacity.

The cellulose elements are produced in various sizes to suit all RMF Systems filter housings. The RMF Systems cellulose elements compatible with most commonly used hydraulic and lubricating fluids, including biodegradable fluids.

Glass fiber elements

RMF Systems offers a range of glass fiber filter elements in a fineness of 1 micron and 3 micron. The micro filter element works as a fine filter through which oil passes radially, from the outside to the inside. RMF Systems glass fiber filter elements (conventional pleated construction) are extremely efficient and have a large dirt holding capacity.

The glass fiber elements are suited for all RMF Systems filter housing (except the size 20 housing) and are compatible with most commonly used hydraulic and lubricating fluids, including biodegradable fluids. The glass fiber elements are particularly suited for gearbox applications where high viscosity fluids limit the use of the cellulose elements.

Filter Element Technical Data

Fluid compatibility