Vent and bleed filter, water-absorbing Sizes 25 to 125 Component series 2X Maximum operating pressure 1 bar [14.5 psi] Connection G 3/8 to G 1 1/4 BSP; (ISO 228) with adapter plate: Ø58 x 2.5 (DIN 24557) ▶ Operating temperature 0 °C ... 85 °C [‒18 °F ... 185 °F] ▶ Highly efficient, special filter material ▶ Filtration of ultra-fine particles and high dirt retention capacity ▶ Adsorption of air humidity ▶ Minimizes the risk of corrosion in the hydraulic tank ▶ Filter cartridge as well as water-absorbing granules exchangeable ▶ Optional check valves to avoid air exchange during no-load operation ▶ Optional adapter plate including check valve for discharge air from tank, without filtration ▶ Combines air filtration and dehumidification in fluid systems Features 1 Ordering code 2 Accessories 3 Symbols 4 Function, section 5 Technical data 6 Characteristic curves 7, 8 Dimensions 9 ... 11 Spare parts 12 Assembly, commissioning and maintenance 13 Tightening torques 14 Directives and standardization 14

BFSK 25 … 125 | Vent and bleed filter Ordering code Filters 01 Air filter with water-absorbing granules Component series 20 to 29 (20 to 29: unchanged installation and connection dimensions) Glass fiber material, not cleanable, 3 μm Material Plastic version – male thread for size 25 (steel double nipple) Stainless steel version – male thread for sizes 40 - 125 Without check valve (standard) With check valve, cracking pressure of anti-cavitation valve 0.02 bar [0.29 psi], cracking pressure of preload valve 0.02 bar [0.29 psi] Preferred types Vent and bleed filter, waterabsorbing Material no. Replacement...

Vent and bleed filter | BFSK 25 … 125 3/14 Accessories Ordering codes, visual maintenance indicator 01 Maintenance indicator visual indicator Vacuum differential, design 01 only in connection with adapter plate (AP1, AP2 or APCV) Ordering codes, adapter plate 01 Adapter plate size 1 for sizes 25 Adapter plate size 2 for sizes 80 and 125 Adapter plate with check valves Series/size 03 Adapter plate 2 or adapter plate CV Component series 04 Component series 20 to 29 (20 to 29: unchanged installation and connection dimensions) NG 25 only possible in connection with reducing fitting (R900183367 G3/4...

BFSK 25 … 125 | Vent and bleed filter Symbols Vent and bleed filter without valves Vent and bleed filter with valves Vent and bleed filter with valves, maintenance indicator and adapter plate (AP1; AP2) Vent and bleed filter with maintenance indicator and adapter plate (APCV) with integrated valves. Hengst Filtration GmbH, RE 51456, edition: 2021-04

Vent and bleed filter | BFSK 25 … 125 5/14 Function, section In hydraulics, air exchange at the fluid tank must be ensured at all times. Depending on the machine cycles, air is sucked into the tank and pressed out again. The air contains miniature particles as well as water vapor. Due to temperature variations, the exchanged air condenses and stimulates the oxidation process of the oil. This leads to corrosion resulting in damage to the fluid tank. By means of the Hengst BFSK vent and bleed filter, the fluid tank can suck in and give off clean and dry air. It is intended to be directly attached...

BFSK 25 … 125 | Vent and bleed filter Technical data (For applications outside these parameters, please consult us!) General Weight Installation position Ambient temperature range Storage conditions Operating temperature Material Polymethyl methacrylate Adapter plate Anodized aluminum Visual maintenance indicator Housing made of polycarbonate Cracking pressure of check valve Type of pressure measurement of the maintenance indicator Response pressure of the maintenance indicator Filter element Micro glass H3V3 μm 3, Single-use element on the basis of inorganic fiber Admissible pressure differential...

Vent and bleed filter | BFSK 25 … 125 7/14 Characteristic curves BFSK25-2X / H3V3-M-O-O without check valve BFSK25-2X / H3V3-M-O-CV with check valve BFSK40-2X / H3V3-M-S-O without check valve BFSK40-2X / H3V3-M-S-CV with check valve

BFSK 25 … 125 | Vent and bleed filter Characteristic curves BFSK80-2X / H3V3-M-S-O without check valve BFSK80-2X / H3V3-M-S-CV with check valve BFSK125-2X / H3V3-M-S-O without check valve BFSK125-2X / H3V3-M-S-CV with check valve 70 Hengst Filtration GmbH, RE 51456, edition: 2021-04

Vent and bleed filter | BFSK 25 … 125 9/14 Dimensions: Vent and bleed filter (dimensions in mm [inch]) BFSK25 Double nipple G3/8 on both exterior sides SW Filter types Type BFSK... RE 51456, edition: 2021-04, Hengst Filtration

BFSK 25 … 125 | Vent and bleed filter Hengst Filtration GmbH, RE 51456, edition: 2021-04 Dimensions: Maintenance indicator, visual (dimensions in mm [inch])

Vent and bleed filter | BFSK 25 … 125 11/14 Dimensions: Adapter plates (dimensions in mm [inch]) AP1 Hole pattern of tank cover F Check valve Hole pattern of tank cover RE 51456, editi

BFSK 25 … 125 | Vent and bleed filter Spare parts Ordering code, replacement cartridge and refill pack 01 Component series 20 to 29 (20 to 29: unchanged installation and connection dimensions) Filter rating in μm absolute 04 Glass fiber material, not cleanable, 3 μm Without check valve Always 0 with replacement cartridge Vent and bleed filter, water-absorbing BFSK25-2X/H3V3-M-0-0 Replacement cartridge Refill granules (incl. 2 foam pads) Hengst Filtration GmbH, RE 51456, edition

Vent and bleed filter | BFSK 25 … 125 13/14 Assembly, commissioning and maintenance Installation The connection thread of the filter must correspond to the connection thread of the tank cap. If an adapter plate is used, the hole pattern (DIN 24557-2) of the tank cap must be compared to the dimensions from the "Dimensions" chapter prior to installation. Please remove the sealing foil (air inlet A) and the end cap of the filter connection prior to use. Screw the filter into the tank bore or the adapter plate respectively. When installing the filter, the required servicing height of the replacement...