Dingan 3dr16p...L7X Type Three-Way Pressure Reducing Valve Hydraulic Valve

• Customization: Available
• Function: Pressure Regulating
• Installation: Plate
• Model NO.: 3DR16P...L7X
• Type: Directly Operated Type
• Pressure: Depending on Model
• Structure: Depending on Model
• Dimension(L*W*H): Depending on Model
• Maximum Pressure: 250 Bar
• Maximum Flow Rate: 220 L/Min
• Material: Rubber Cast Iron
• Color: Blue
• Temperature of Media: Room Temperature
• Power: Hydraulic
• Standard or Nonstandard: Standard
• After-Sales Service Provided: Online Support
• Transport Package: Strong Wooden Carton
• Specification: NG 16
• Trademark: Dingan
• Origin: China Hebei Xingtai Ningjin
• HS Code: 8481901000
• Production Capacity: 60000 Piece/Pieces Per Month
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 10.000kg

Product Description

Product Features
- Mounting surface complies with DIN24340A and ISO4401
-4 pressure ranges
-2 types of adjustment
    Knob
    Adjusting bolt with protective cover
- With pressure gauge interface

The 3DR16P valve is a three-way pressure reducing valve used to limit the pressure in the secondary circuit and ensure the stability of the secondary pressure. It is used to reduce the pressure in a local circuit.

The valve is composed of a valve body (1), a control valve core (2) and a pilot valve body (3) with an adjusting device (10).

In the static state, the valve is normally open and the oil can flow freely from P to A. The pressure of the oil port A acts on the end surface opposite to the compression spring (9) through the control oil circuit (4). At the same time, the oil passes through the throttle hole, and the oil acts on the ball valve (7) in the pilot valve (3) through the throttle hole (6) and the oil circuit (5). According to the spring (11)

The control spool (2) is set to build up pressure in the oil port (5) in front of the ball valve (7), keeping the control spool in the open position. The oil can flow freely from P to the oil port A through the control spool (2) until the oil port pressure exceeds the setting value of the spring (11) and opens the ball valve (7). The control spool (2) moves to the closed position. When the pressure at the oil port A and the setting pressure of the spring (11) reach equilibrium, the desired reduced pressure is obtained.

If the pressure at port A continues to increase due to external force, the control valve core (2) moves further in the direction of the spring (9). This connects port A and port T through the groove (8) on the valve core (2). Excess oil flows back to the tank to ensure that the pressure does not increase further.

The control oil in the spring chamber (12) must flow from the outside through the oil passage (13) to the oil port Y and then be discharged into the oil tank without back pressure.

The pressure gauge interface (14) can monitor the reduced pressure at port A.

Working medium temperature range		ºC	-30 ~+80 (NBR seals)
			-20 ~+80 (Fluorine Rubber Seal)
Nominal pressure		bar	315
Maximum flow rate		L/min	220
Working medium			Mineral oil; phosphate ester
Viscosity range		mm^2/s	10~800
Oil contamination degree			Maximum oil contamination according to NAS 1638 Class 9 and ISO 4406 Class 20/18/15
Weight		kg	8.8

    Hebei Ding'an Hydraulic Machinery Co., Ltd. is a professional company integrating the research, production and sales of hydraulic valves. It is an ISO9001:2000 quality management system certified enterprise. The company currently has fixed assets of more than 10 million yuan, covers an area of 16,000 square meters, has strong technical force, and has more than ten years of experience in the development and production of hydraulic valves. It can quickly and high-quality develop various mining and engineering machinery hydraulic valves according to customer requirements.