Duplex Filter

Duplex Filter
Duplex Filter
Duplex Filter
Duplex Filter
Duplex Filter
Duplex Filter
Duplex Filter
Duplex Filter
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Huilong duplex filters are often mounted in the low pressure pipeline or oil return pipeline of hydraulic systems. The filter housing and the changeover valve are designed in accordance with the international standard. Stainless steel is available as the housing material upon customer’s request. The changeover valve is a ball valve with excellent leakproofness and reliability.

The duplex filter is equipped with the pressure-balanced device and the differential pressure indicator. When the clogging in filter element causes a pressure drop increase, the indicator sends a signal for cleaning or replacing the element. By activating the changeover valve, the dirty filter chamber is switched off and the clean filter chamber will be put in operation simultaneously, allowing to replace the contaminated filter element without system shutting down. If the filter element hasn’t been replaced in time, the bypass valve on the filter will automatically open to protect the hydraulic system.

Features

LYPL/LYPS/LYPD series filter is designed for mounting in the low pressure pipeline or return line circuits of hydraulic systems,separating solid particles from the hydraulic fluids returning to the tank.

Technical Specifications
  • Operating pressure: Max. 16 bar
  • Operating temperature: -25℃~120℃
  • Setting pressure of clogging indicator:2 bar
  • Bypass valve cracking pressure: 3bar
  • Filter housing material:Steel
  • Working substance: mineral oil, emulsion, water-glycol, phosphate ester hydraulic oil (resin-impregnated paper only for mineral oil)
ORDERING INFORMATION
3. FILTER ELEMENT CLEAN PRESSURE DROP UNDER RATED FLOW

(UNIT:Pa; KINEMATIC VISCOSITY:30mm²/s; DENDITY 0.86kg/dm³)

Filter type Housing Filter element
FT FC FD FV CD CV MV ME
LYPL/LYPD1300... 0.18 1.14 0.71 0.52 0.38 0.31 0.24 0.40 0.20
LYPL/LYPD2600... 0.17
LYPL/LYPD3900... 0.18
LYPL/LYPD6500... 0.19
LYPL/LYPD7800... 0.18
LYPL/LYPD9100... 0.26
LYPL/LYPD2600D... 0.49 1.24 0.75 0.54 0.39 0.32 0.26 0.43 0.22
LYPL/LYPD5200D... 0.46
LYPL/LYPD7800D... 0.47
LYPL/LYPD13000D... 0.47
DIMENSIONS
4.1 LYPL/LYPS Series
Filter Type H H1 H2 L D D4 D5
LYPL/LYPS 1300 1200 480 365 500 Φ245 Φ215 Φ14
LYPL/LYPS 2600/3900 1280 525 365 600 Φ416 Φ386 Φ18
LYPL/LYPS 6500 1500 600 450 746 Φ508 Φ478 Φ23
LYPL/LYPS 7800 1500 600 450 746 Φ508 Φ478 Φ23
LYPL/LYPS 9100 1500 600 450 746 Φ508 Φ478 Φ23
LYPL/LYPS 2600D 1642 480 365 500 Φ245 Φ215 Φ14
LYPL/LYPS 5200D 1722 525 365 600 Φ416 Φ386 Φ18
LYPL/LYPS 7800D 1722 525 365 600 Φ416 Φ386 Φ18
LYPL/LYPS 13000D 1942 600 450 746 Φ508 Φ478 Φ23
Flange Dimension D1 D2 D3 d n
DN65 Φ180 Φ75 Φ145 Φ18 4
DN80 Φ195 Φ90 Φ160 Φ18 8
DN100 Φ215 Φ110 Φ180 Φ18 8
DN125 Φ250 Φ135 Φ210 Φ18 8
DN150 Φ285 Φ161 Φ240 Φ23 8
DN200 Φ340 Φ220 Φ295 Φ23 12
DN250 Φ405 Φ275 Φ355 Φ25 12
4.2 LYPD Series
Filter Type H H1 H2 L L1 D D4 D5
LYPD1300 1200 480 365 900 200 Φ245 Φ215 Φ14
LYPD2600 1280 525 365 1125 260 Φ416 Φ386 Φ18
LYPD3900 1280 525 365 1125 260 Φ416 Φ386 Φ18
LYPD6500 1500 600 450 1400 325 Φ508 Φ478 Φ23
LYPD7800 1500 600 450 1400 325 Φ508 Φ478 Φ23
LYPD9100 1500 600 450 1400 325 Φ508 Φ478 Φ23
LYPD2600D 1642 480 365 900 200 Φ245 Φ215 Φ14
LYPD5200D 1722 525 365 1125 260 Φ416 Φ386 Φ18
LYPD7800D 1722 525 365 1125 260 Φ416 Φ386 Φ18
LYPD13000D 1942 600 450 1400 325 Φ508 Φ478 Φ23
Flange Dimension D1 D2 D3 d n
DN65 Φ180 Φ75 Φ145 Φ18 4
DN80 Φ195 Φ90 Φ160 Φ18 8
DN100 Φ215 Φ110 Φ180 Φ18 8
DN125 Φ250 Φ135 Φ210 Φ18 8
DN150 Φ285 Φ161 Φ240 Φ23 8
DN200 Φ340 Φ220 Φ295 Φ23 12
DN250 Φ405 Φ275 Φ355 Φ25 12
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