Suction Filters

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Huilong suction filter is mounted on the oil inlet port of the oil pump for protection of the oil pump and downstream hydraulic unit against contamination, improving cleanliness of the hydraulic system.

This suction filter can be fitted on the side, top or below the oil tank. The filter bowl is immersed below the oil level while the filter head is emerged above it. The suction filter is equipped with self-sealing valve, bypass valve and clogging indicator to shut off oil flow while the filter element is being replaced or cleaned. Huilong oil suction filter features innovative design, easy installation, simple cleaning and replacement, high flow rate and low pressure drop. The utilization of clogging indicator and bypass valve greatly improves the reliability of the hydraulic system. Once the clogging of the filter element causes vacuum (-0.018MPa) in the oil outlet port, the clogging indicator will actuate to send a warning signal for cleaning or replacing the filter element. If the filter element hasn’t been replaced in time, the bypass valve on the filter top will automatically open (opening pressure: -0.02MPa) to prevent cavitation in the pumps.

Technical Specifications

Flow rate: 120L/min
Operating pressure: 0.7Mpa
Burst pressure: 2Mpa
Permissible pressure drop:0.01Mpa
Operating temperature: <100°C
Filtration rating: 80um;100 um;150 um; filtration ratioβ≥2
Opening pressure of bypass valve: -0.03Mpa

Model Specifications

Filter Model	Nominal Flow Rate （L/min）	Filtration Rating (μm)	Diameter(mm)	Pressure Drop（MPa）	Clogging Indicator		Port Connections	Filter Element Model
Filter Model	Nominal Flow Rate （L/min）	Filtration Rating (μm)	Diameter(mm)	Pressure Drop（MPa）	（V）	（A）	Port Connections	Filter Element Model
TF-25×*L-	25	80 100 180	15	＜0.01	12 24 36 220	2.5 2 1.5 0.25	Threaded	TFX-25×*
TF-40×*L-	40		20					TFX-40×*
TF-63×*L-	63		25					TFX-63×*
TF-100×*L-	100		32					TFX-100×*
TF-160×*L-	160		40					TFX-160×*
TF-250×*L-	250		50				Flange	TFX-250×*
TF-400×*L-	400		65					TFX-400×*
TF-630×*L-	630		90					TFX-630×*
TF-800×*L-	800							TFX-800×*
TF-1000×*L-	1000							TFX-1000×*
TF-1300×*L-	1300							TFX-1300×*

TF-25 ~160 suction filter with threaded connector

Model	Dimensions（mm）
	L1	L2	L3	H	M	D	A	B	C1	h	d
TF-25×*L-	93	78	36	25	M22×1.5	Ф62	80	60	45	9.5	Ф9
TF-40×*L-	110				M27×2		91	70.7	54
TF-63×*L-	138	98	40	33	M33×2	Ф75				10
TF-100×*L-	188				M42×2
TF-160×*L-	200	119	53	42	M48×2	Ф91	105	81.3	62	12	Ф11

TF-250 ~ 1300 suction filter with flange connector

Model	Dimensions（mm）
Model	L1	L2	L3	H	D1	D	a	b	n	A	B	C1	h	d
TF-250×*F-	270	120	53	42	Ф50	Ф91	70	40	M10	106	81.3	72.5	10.5	Ф11
TF-400×*F-	275	141	60	50	Ф65	Ф110	90	50		125	95.5	82.5	12
TF-630×*F-	325	184	54	65	Ф90	Ф140	120	70		160	130	101	15.5
TF-800×*F-	385
TF-1000×*F-	485
TF-1300×*F-	680