HAWE proportional pressure reducing valve DG365V in stock

Brand

HAWE/Germany

Application Areas

Chemical, Petroleum, Energy, Electrical, General

HAWE proportional pressure reducing valves reduce the inlet pressure to a desired outlet pressure through regulation, and automatically maintain a stable outlet pressure by relying on the energy of the medium itself. From a fluid mechanics perspective, a pressure reducing valve is a throttling element with variable local resistance. That is, by changing the throttling area, the flow velocity and kinetic energy of the fluid are altered, resulting in different pressure losses, thereby achieving pressure reduction. Then, through the regulation of the control and adjustment system, the fluctuation of the downstream pressure is balanced with the spring force, keeping the downstream pressure constant within a certain error range.

HAWE Proportional Pressure Reducing Valve Working Principle

HAWE proportional pressure reducing valves are accessories of pneumatic control valves. Their main function is to reduce and stabilize the pressure of the air source to a fixed value, so that the control valve can obtain a stable air source power for regulation and control. According to the structural form, they can be divided into diaphragm type, spring diaphragm type, piston type, lever type, and bellows type; according to the number of valve seats, they can be divided into single-seat type and double-seat type; according to the position of the valve disc, they can be divided into direct-acting type and reverse-acting type.

The main function of a HAWE proportional pressure reducing valve:

The working principle of a pressure reducing valve is to reduce water pressure by utilizing the local resistance of the flow channel within the valve. The pressure drop range is automatically adjusted by the pressure difference between the inlet and outlet on both sides of the diaphragm or piston connected to the valve disc. In recent years, some new types of pressure reducing valves have emerged, such as the proportional pressure reducing valve. The proportional pressure reducing principle utilizes the water pressure ratio control of the floating piston in the valve body; the pressure reduction ratio at the inlet and outlet ends is inversely proportional to the ratio of the piston areas on the inlet and outlet sides. This type of pressure reducing valve operates smoothly without vibration; there are no springs in the valve body, thus eliminating concerns about spring corrosion and metal fatigue failure; it has excellent sealing performance and does not leak, thus reducing both dynamic pressure (when water is flowing) and static pressure (when the flow rate is 0); especially, it does not affect the water flow rate while reducing pressure.

Although there is a significant head loss when water flows through the pressure reducing valve, it is still energy-efficient overall because it reduces water waste, rationalizes the system flow distribution, and improves the system layout and operating conditions. Each spring of the pressure reducing valve is only applicable within a certain outlet pressure range; the spring should be replaced if the pressure exceeds this range. In applications where the medium operates at high temperatures, pilot-operated piston-type or pilot-operated bellows-type pressure reducing valves are generally selected. For applications involving air or water (liquid), direct-acting diaphragm-type or pilot-operated diaphragm-type pressure reducing valves are generally preferred. For applications involving steam, pilot-operated piston-type or pilot-operated bellows-type pressure reducing valves are recommended. For ease of operation, adjustment, and maintenance, pressure reducing valves should generally be installed on horizontal pipelines.

Function of the German Hawe VDM Pilot-Operated Pressure Reducing Valve

This section describes the pilot-operated pressure reducing valve. The main valve contains a spring and a main valve core, which is controlled by a pilot valve (relief valve). This pilot valve sets the required outlet pressure for the pressure reducing valve. The main valve core continuously changes the flow area of ​​the main valve port as the inlet pressure changes, ensuring that the throttling pressure drop at the main valve port increases or decreases proportionally with the increase in inlet pressure. This maintains a constant outlet pressure. The control oil flow required to control the movement of the main valve core is led out of the valve as leakage oil through the pilot valve.

Both the main valve and pilot valve are made entirely of steel. Key functional components, such as the main valve spool and sleeve, and the pilot valve seat and cone spool, are heat-hardened and polished.

German Hawe VDM type pilot-operated pressure reducing valve supply specifications and main technical parameters.

Spool-type directional control valves are commonly used in hydraulic systems using hydraulic oil as the medium. Directional control valves control the direction of fluid flow, thereby controlling the direction of movement of the actuator (hydraulic cylinder or hydraulic motor). These directional control valves are designed for single-unit installation and feature balanced internal leakage, therefore eliminating the need for a leakage port.

Vehicle models are suitable for:

Direct pipe connection or

Panel mounting

Directional control valves consist of a control element (spool valve including the valve body) and a pre-installed operating device.

All valve components are made of steel, which allows the valve body to withstand pressure shocks without leakage. The effects of pressure shocks can sometimes be observed in cast valve bodies after prolonged use, manifesting as fine cracks forming and evolving on the surface, especially when operating at full allowable pressure.

In this series of directional valves, this phenomenon is avoided from the outset. The valve body bore is honed with diamond. The hardened and ground valve core is polished/deburred.

These measures ensure its roundness and precise geometry (control edges do not wear or widen), and appropriate sealing clearances ensure minimal leakage. Cast materials (zinc and aluminum die castings) are used only for unpressurized components such as the operating mechanism housing, spring cover, and base plate. A ductile iron manual operating mechanism housing is also available, particularly for harsh operating conditions and in tandem valve configurations.

GZ3-3R-G24 GZ3-1-G24GZ3-1 G24 GZ3-1 AC220V GZ3-0R-G24 GZ3-0-G24 GS2-3-G24GS2-2-G24 GS2-2-G110V GS2-2-G 110V GS2-1-G24 GS2-0R-G24GS2-0-G24 GR2-3G24 GR2-2-G24 GR2-2G24 GR2-2 G24GR2-2 GR2-1-L 24 GR2-1HFA-3/8-A24 GR2-1-G24 GR2-1-G24GR2-1 B-N24 2825 GR 2-1-A 24-HFA G3-4 24V G3-3-G24 G3-2 G24G3-1-G24 G3-1 G3-0-G24 G21-1-G24 G 3-2-3/8-G 24FP 12 M-H11/B 13-A 1/175BWN 1 F-SYSN 8M-2-1-X24F200-100 F16-76BC1-1.0 F160/76 F125-60 F100/45 F 80-36EV1M2-24/4+KM7831 010 EV 22 K 2-12/24 EV 22 K 1-24 EV 1 G 1-12/24ER21 EN20-700/70 EM41V3/4AWG24 EM11V-G24 EJ2-10 ED2 ED 11DT2V-4-MSD-T7 1290 DT2-4 DT1-400 DT1-100 DS2-1 DRH 3 L DR2-2DL25-2-DD-B/E1-3 DL 11-1-N-B/E 1-2-200 DH50 DG8F DG365-30DG365 DG35-1/4 G1/4 20 DG35-1/4 DG35 DG34 DG33 DG2MS DG 5E-250-Y 1 E-MSD-T7 D4-1R CSV2F-3 CSV 2F CRK1 CRK1CRB1 CMV1E CMV1B CMV 1F CDK3-5 CDK3-2 CAV 1 D BVZP 1-G 22/CZ X.2-X24 BVP 1S-G24 B2-7-PYD F26611 B2-2 ADMIIA BAR 1302 AC4-3147051F-G72/22-D22/22-1-1-G24 with motor HRP5V-B0.6 DG2MSVZP 1E 22-G24

DG5E-400-MSD-T7, DG33, DG35, DG36, DG35V, DG365V, GZ3-1G24, GZ4-1G24, GZ3-1G24, GZ4-1G24, DT1-100, DT1-400, DL3 1-3-D-C/E1-2-160, DL31-3-D-C/E1-3-160, DL31-3-DD-C/E1-2-160, DL31-3-DD-C/E1-3-160, DL41-3-D-C/E1-2-160,

DL41-3-D-C/E1-3-160, DMV53-E/E-40/40, DMV53-E/E-80/80, MVX64C-266, MVX64D-210, MVX64C-266, MPE8, MPE8, M V63E-42-PYD, MV42E-140-pyd, MVP14M-100, MV53F, MV53E, MVP5E-100, HC24/1.1-A4/200-VB-11FM-N65N65-1-G24,

The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, Vickers, Helón (Norgren)

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi