Off-Line Filter
OLS Series

Stauff_Filter_Off-Line_OLS

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

  OLS - 1A - 30 - H - B OLS - 2A - 30 - H - B OLS - 4A - 30 - H - B
Number of filter housings 1 2 4
Nominal flow 0.6 US GPM
(2.1 l/min)
1.1 US GPM
(4.2 l/min)
2.25 US GPM
(8.5 l/min)
Max differential pressure Max 90 PSI (6,2 bar) over the filter element without backpressure
Max fluid temperature 176°F (80°C)
Max housing pressure 290 PSI (20 bar)
Viscosity range 100-750 SUS (20-160 cSt)
Connection suction side 3/8" BSP 1/2" BSP
Connection return line side 1/2" BSP EW 18L - 3/4"
Hose diameter 1/2" (inner diameter) flexible hose 3/4" (inner diameter)
Weight (Including element) 29.5 lbs
(13.4 kg)
43.5 lbs
(19.8 Kg)
88 lbs
(40 kg)
Max system volume 356 gal
(1,350 l)
713 gal
(2,700 l)
1426 gal
(5,400 l)
Dimensions (H×W×D) 16.4 x 13.4 x 6.9"
(418 x 341 x 176 mm)
16.4 x 13.4 x 13.4"
(418 x 340 x 341 mm)
20.2 x 19.4 x 11.6"
(514 x 494 x 294 mm)
Connection for online-
particle counter
STAUFF TEST (M16 x 2)
Pump Gear pump
Motor See Stauff Filter catalog

 

Technical Data

  OLS - 1B - 30 - H - B OLS - 2B - 30 - H - B OLS - 4B - 30 - H - B
Number of filter housings 1 2 4
Nominal flow 1.1 US GPM
(4.2 l/min)
2.25 US GPM
(8.5 l/min)
4.5 US GPM
(17 l/min)
Max differential pressure Max 90 PSI (6.2 bar) over the filter element without backpressure
Max fluid temperature 176°F (80°C)
Max housing pressure 290 PSI (20 bar)
Viscosity range 100-750 SUS
(20-160 cSt)
Connection suction side 1/2" BSP 3/4" BSP
Connection return line side 1/2" BSP EW 18L - 3/4"
Hose diameter 1/2" (inner diameter)
flexible hose
1/2" - 3/4" (inner diameter)
flexible hose
Weight (Including element) 36.7 lbs
(16,7 kg)
61.6 lbs
(28 Kg)
136.4 lbs
(62 kg)
Max system volume 713 gal
(2,700 l)
1,426 gal
(5,400 l)
2,853 gal
(10,800 l)
Dimensions (H×W×D) 28.2 x 13.4 x 6.7"
(717 x 341 x 176 mm)
28.2 x 13.4 x 13.4"
(717 x 340 x 341 mm)
32.3 x 16.3 x 11.6"
(820 x 494 x 294 mm)
Connection for online-
particle counter
STAUFF TEST (M16 x 2)
Pump Gear pump
Motor See Stauff Filter catalog

 

 

Water Absorbing Off-Line Filter
OLSW Series

Stauff_Filter_Off-Line_Water Absorbing_OLSW

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.

In recent years RMF Systems have developed a great deal of experience in cleaning and drying hydraulic and lubrication systems in the following markets:

  • Steel industry
  • Maritime industry
  • Petrochemical industry
  • Paper industry

Advantages

  • Extremely clean oil due to the high filtration efficiency ß2 > 2,330
  • 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 OLSW

Type Filter OLSW - 1A - 30 - H - B OLSW - 1B - 30 - H - B
No. of filter housings 1 1
Material filter housings Anodized Aluminum
Material filter housings Buna-N Standard
Nominal Flow 0.6 US GPM
(2,1 l/min)
1.1 US GPM
(4,2 l/min)
By-pass opening pressure 90 PSI at 0 PSI back pressure
(6,2 bar)
90 PSI at 0 PSI back pressure
(6,2 bar)
Number of standard filter elements 1 pcs. 2 pcs.
Number of pre-filter elements 1 pcs. 1 pcs.
Water absorbing capacity 22 oz.
(650 ml)
27 oz.
(800 ml)
Max pressure filter housing 290 PSI (20 bar)
Max oil temperature 176°F (80°C)
Max viscosity 160 cSt
Indicator type Gauge glycerine filled
Connection pump suction 1/2" BSP female 1/2" BSP female
Diameter hose suction side 1/2"
Filter return connection 1/2" BSP female
Diameter hose return side 1/2"
Dimensions
(HxBxL)
15.7 x 14.2 x 13"
(400 x 360 x 330 mm)
28 x 16 x 12.6"
(710 x 410 x 320 mm)
Pump type Gear pump
Power supply E-motor Various electrical power supplies possible
Max system volume 356 gal
(1,350 liter)
713 gal
(2,700 liter)
Standard units for larger system volumes are also available
Connection oil-analysis:
P1 filter inlet side
P2 filter outlet side

Test connector (M16x2) Red
Test connector (M16x2)

 

 

By-Pass Filter
BPS Series

Stauff_Filter_By_Pass_BPS_1

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

  BPS - 1A - 30 - H - B BPS - 2A - 30 - H - B
Number of filter housings 1 2
Nominal flow 0.6 US GPM
(2,1 l/min)
1.1 US GPM
(4,2 l/min)
Max differential pressure Max 90 PSI at 0 PSI back pressure
(6,2 bar)
Max fluid temperature 176°F
(80°C)
Max housing pressure 290 PSI
(20 bar)
Range of viscosity 100-750 SUS
(20-160 cSt)
Connection pressure side 1/4" BSP
Connection return line side 1/2" BSP
Diameter of hose 3/8" - 1/2" (inner diameter)
flexible hose
Weight 13.2 lbs
(6 kg)
27 lbs
(12.3 Kg)
Max volume of tank 200 gal
(750 l)
400 gal
(1500 l)
Dimensions (H×W×D) 16.4 x 5.1 x 6.2"
(418 x 131 x 159 mm)
16.4 x 11.1 x 6.2"
(418 x 282 x 158 mm)
Connection for online-
particle counter
STAUFF TEST (M16 x 2)
Pressure range 180 - 6200 PSI
(12 - 420 bar)

Dimensions in inches (mm)

Mini Water Vac Vacuum Dehydration Unit
MWV Series

Stauff_Filter_Mini Vac Dehydration Unit_MWV

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.

Water, Gas and Particle Removal
The Mini Water Vac removes liquid, gas, and solid particle contamination, which are corrosive and contribute to the reduction of machine life. Contamination greatly increases maintenance costs and contribute to breakdowns and total machine failures. The Mini Water Vac offers protection against malfunctions, breakdowns or total failures. The Mini Water Vac also protects the environment by reducing oil consumption and oil disposal.

Benefits

  • Efficient water, gas and particle removal
  • Extension of fluid life
  • Reduces fluid disposal
  • Minimizes corrosion
  • Reduced failures and downtime
  • Reduce operating costs

Technical Specification

Type Filter MWV-1A-30. Weight 287 lb
(130 kg)
No. of filter housings 1 Voltage (standard) 230/400 VAC 50 Hz
255/460 VAC 60 Hz
Material filter housing Anodized Aluminum Power supply (standard) 3 phase
Material vacuum chamber Anodized Aluminum Heater section 2 Kw
Material heating chamber Anodized Aluminum Vacuum section 0.037 kW vacuum pump
Recirculating flow rate 23.8 Gal/hr
(90 l/ hr)
Max Amp 3
Max viscosity 500 Cst Process control PLC unit
Min viscosity 20 Cst Filtration section 1 micron microglass
ß1 > 200
Attainable water content Below 100 ppm Inlet 1" BSP female
Water removal 100% of free water
>80% of dissolved water
Outlet 1/2" BSP female
Gas removal 100% of free and entrained gases
>80% of dissolved gases
Max back pressure 14.5 psi
(1 bar)
Max system volume 795 gal
(3,000 liter)
Max heater temperature 149°F
(65°C)
Dimensions (h × w × d) 47.3 x 29.1 x 17.7 in
(1,200 x 740 x 450 mm)
Connection for online-
particle counter
Stauff Test (M16 x 2)

 

 

Heated Off-Line Filter
OLSH Series

Stauff_Filter_Off-Line_Heated_OLSH

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

  OLSH-1A-30 OLSH-1B-30
Number of filter housings 1 1
Nominal flow rate 0.6 US GPM
(2.1 l/min)
1.2 US GPM
(4.2 l/min)
Max differential pressure Max. 90 PSI (6.2 bar) without back pressure
Max fluid temperature 176°F
(80°C)
Max housing pressure 290 PSI
(20 bar)
Heater capacity 2kW
Connection suction side 3/8" BSP
Connection return side 1/2" BSP
Hose diameter 1/2" - 3/4" (inner diameter) flexible hose
Weight (including element) 44 lbs
(24 kg)
62 lbs
(28 kg)
Max system volume 356 gal
(1,350 l)
713 gal
(2700 l)
Dimensions (H × W × D) 22.4 × 18.0 × 7.5 in
(570 × 458 × 190 mm)
28.7 × 18.0 × 7.5 in
(730 × 485 × 190 mm)
Connection for on-line particle counter Stauff Test (M16 X 2) Stauff Test (M16 X 2)
Pump Gear pump
Motor See Stauff Filter catalog

Dimensions in inches (mm)

 

By-Pass Lube-Oil Filter
BPLS Series

Stauff_Filter_By-Pass Lube-Oil_BPLS

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

BPLS-1A-26
Maximum sump size 9.25 gal
(35 liter)
Maximum supply pressure 87 PSI
(6 bar)
Burst pressure housing >290 PSI
(> 20 bar)
Outlet orifice 0.06"
(1,5 mm)
Housing volume 0.58 gal
(2,2 liter)
Inlet Port 1/4" BSP-P
Outlet Port 1/4" BSP-P

Environmental benefits

  • Less oil consumption
  • Therefore less waste oil
  • Increased life time of additives
  • Reduction of harmful emissions

Financial benefits

  • Savings in labor and materials (oil changes)
  • Reduced costs for repairs and downtime
  • Reduced waste processing costs

Applications

  • Construction equipment
  • Agricultural equipment
  • Forestry equipment
  • Diesel driven welding machines/generators
  • Port equipment

 

Technical benefits

  • Less malfunctioning
  • Greater reliability of operation
  • Prolonged oil usage life
  • Reduced down time
  • Reduced wear on cylinder linings and pistons
  • Less bore polishing
  • Less formation of black sludge
  • Improved engine compression
  • Increased equipment life time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replacement Filter Elements
SRM Series

Stauff_Filter_Replacement Elements_SRM

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

Element model SRM-30HB SRM-30G01B SRM-30G03B SRM-30A05B
Filter material Cellulose Glass fiber Glass fiber Glass fiber and Polymer
Filtration efficiency ß(0.5) ≥ 200 / ß(2) ≥ 2331 ß(1) ≥ 200 ß(3) ≥ 200 ß(5) ≥ 200
Water absorption capacity 5 oz
(150 ml)
N/A N/A 11.8 oz
(350 ml)
Nominal flow per element 0.6 GPM
(2.1 l/min)
0.6 GPM
(2.1 l/min)
0.6 GPM
(2.1 l/min)
0.6 GPM
(2.1 l/min)
Max viscosity at nominal flow rate 180 cSt 800 cSt
At other flow rate Consult factory
Max oil temperature 176°F
(80°C)
Length of element 11.8 in
(300 mm)
Seal material (standard) NBR (Buna-N®)
and Silicone Rubber
NBR (Buna-N®) NBR (Buna-N®) NBR (Buna-N®)
Other seal material Consult factory
Fluid compatibility
Mineral oils
H, Hl, HLP, HVLP
OK OK OK OK
Biodegradable oils
HEPG Polethyleneglycol
Consult factory
HEES Synthetic ester
OK OK OK OK
HETG Vegetable seed oil
Consult factory
Fire inhibiting fluids
HFA emulsions
NO OK OK NO
HFC glycol/water solution
NO OK OK NO
HFD fluids no water content
Consult factory
Approximate weight 1.8 lb
(0.8 kg)
2.8 lb
(1.25 kg)
2.8 lb
(1.25 kg)
2.8 lb
(1.25 kg)