HAWE Reversing Valve product Series Product Description

HAWE Harvey's reversing valve product line mainly includes:

HAWE Harvey SG, SP type spool valve type reversing valve
HAWE Harvey SG, SP type spool valve type reversing valve has two structural forms, namely SG type pipe connection type with or without overflow valve and SP type plate connection type, and there are 5 specifications, they can be used to control The direction of movement of the different actuators (oil motor and cylinder). This sturdy and versatile directional control valve can be configured with a variety of different handling methods to meet the requirements of various applications (such as ships, mobile machinery, etc.). The maximum pressure Pmax = 200 to 400 bar. The maximum flow rate Qmax = 12 to 100 l/min.

HAWE Harvey SKP and SKH series multi-way reversing valve
HAWE Harvey SKP and SKH series directional control valves are used to control the movement direction of hydraulic cylinders or hydraulic motors. Each slide valve can be connected in parallel (SKP type) or series (SKH type) according to its function, or it can be mixed. . A set of directional spool valves consists of a front spool valve with or without a relief valve, a number of other functional spool valves and a terminal block. It can be installed directly on the R-type, RZ-type and Z-type pumping stations via the connection block, or in a compact (HC type, MP type, HK type) pumping station or in a tubular connection. Various forms of manipulation (manual, electromagnet, hydraulic, pneumatic) have further expanded the field of application of such spools. Maximum pressure Pmax = 200 to 400 bar Maximum flow rate Qmax = 12 to 100 l/min.

HAWE Harvey SW, SWR, SWP, SWS series spool valve type reversing valve
HAWE Harvey spool valve type reversing valve has SW type pipe joint type single valve, or SWP type plate type single valve, and SWR, SWP, SWS type group valve block. All types of reversing valves are operated by wet electromagnets. SWS type reversing valves can be used with proportional electromagnets and stroke limits, and can be used with explosion-proof electromagnets. A single plate-mounted directional control valve can be used to assemble a connection block with a finite pressure valve and can be delivered as a valve block. SWP, SWR, SWS type valve blocks are made up of individual plate-connected valves, terminal plates and connecting blocks (for pipe joints), or terminal plates and transition plates (for direct assembly on pump stations), by tightening bolts Combined. The SWS type directional valve can be used to assemble valves of other functions, such as pilot operated check valves, balancing valves or back pressure valves. In addition, a check valve and a throttle valve or a differential pressure reducing valve can be integrated on the oil path of the pump. Maximum pressure Pmax = 315 bar Maximum flow rate Qmax = 12 to 25 l/min.

HAWE Harvey HSR (L), HSF, HSL series reversing valve
HAWE Harvey HSR (L), HSF, HSL series of reversing valves are pipe-connected check valves (HSL type), plate-connected single valves (HSF type) and combined valve blocks (HSR, HSRL type), It is also used to control the direction of movement of the hydraulic actuator. The valve is electro-hydraulic pilot controlled. The required pilot control oil passage can be introduced from the oil passage or can be controlled by an external control oil passage. The forced commutation and the risk of decompression shocks, especially at high pressures and large flows, can be avoided by means of adjustable throttle bolts (adjustment of the commutation time). For tandem valve blocks, standard connection blocks or connection blocks with unloading valves, pressure limiting valves and pressure reducing valves can be used. In addition, the HSRL3 offers a wide range of different pressure ratings. Maximum pressure Pmax = up to 400 bar Maximum flow rate Qmax = 80 to 160 l/min.

HAWE Harvey DL Series Manually Operated Multi-way Reversing Valve
The HAWE Harvey DL series of manually operated multi-way reversing valves are mainly used for stepless flow throttling control of single-acting and double-acting actuators in fixed or mobile hydraulic systems. The flow throttling control is based on the step-by-step closing of the pump's bypass circuit and the simultaneous opening of the actuator circuit. When the bypass circuit is throttled, the pressure acting on the actuator increases, causing the actuator to begin moving. The DLS multi-way valve is designed for ground handling vehicles (forklifts). The multi-way valve of this type of structure mainly integrates the first valve for controlling the lifting action into the oil block. The other is derived as an integrated priority diverter valve in the oil block. The application of such multi-way valves can be further expanded by the integration of various functional valves (eg buffer valves). Maximum pressure Pmax = 250 to 315 bar Maximum flow rate Qmax = 12 to 90 l/min.

HAWE Harvey PSL and PSV series proportional directional valve
The HAWE Harvey PSL and PSV series proportional multi-way reversing valves are suitable for the stepless speed regulation of the hydraulic actuators of the fixed pump system and the variable pump system, respectively, and the adjustment function is independent of the system load. Multiple actuators can operate simultaneously and independently. This type of valve is mainly used in hydraulic systems of mobile machinery (eg, lifting machinery, drilling rigs, construction machinery, etc.). The optimum matching of the individual control loops can be ensured by selecting the different maximum flow rates of actuators A, B, and by selecting valves with various different functions (eg unloading). Maximum pressure Pmax = 400 to 420 bar Maximum flow rate Qmax = 3 to 210 l/min.

HAWE Harvey NSMD2 series clamping module
HAWE Harvey NSMD2 series clamping modules are mainly used for clamping devices, such as hydraulic clamps for automatic lathes. The NSMD2 clamping module is DIN24340-A6 compliant. This clamping module not only controls the clamping and loosening of the cylinder, but also integrates clamping pressure regulation and electrical pressure monitoring as required. In addition, it is also possible to simultaneously adjust the clamping pressure of the actuator side A, or the A and B interfaces, and set the pressure of the downstream pressure relay by manual, mechanical or proportional adjustment components. The centering of the 4/3 or 4/2 directional control valve and the positioning of the slot not only ensure the safe commutation of the valve, but also meet the requirements of various applications. In addition, when the spool is in the end position, a throttle valve can be added to control the speed of the actuator. Maximum pressure Pmax = 120 bar Maximum flow rate Qmax = 25 l/min.

HAWE Harvey WG, G, H, P and other operating modes of the cut-off type directional control valve
HAWE Harvey WG, G, H, P and other cut-off reversing valves have a variety of operating methods: electromagnet manipulation, pressure control, hydraulic, pneumatic, mechanical manipulation, roller, ejector, manual control, handle, knob. These reversing valves (including plate-connected) are non-leakage, sealed spring loaded steel ball shut-off valves. The steering element passes the right angle lever and the push rod to bring the valve into its respective working position. The two-position two-way and two-position three-way reversing valves are the basic structure of the valve. The two reversing valves are combined in one valve block to realize the three-way three-way and three-position four-way function reversing valve, and an intermediate connecting plate can form a two-position four-way reversing valve. As long as the valve is installed on the bottom plate, it can be a pipe-type valve, and other functional valves (such as pressure limiting valves or bypass check valves) can be selected on the bottom plate to further expand the application range. Many valves can also be connected in parallel to form a valve block (VB type). Maximum pressure Pmax = 320 to 700 bar Maximum flow rate Qmax = 6 to 120 l/min.

HAWE Harvey VB series cut-off reversing valve block
HAWE Harvey VB series cut-off type reversing valve block is a valve block composed of WG, G, H, P and other operating mode cut-off type reversing valves connected in parallel on the bottom plate. The bottom plate is screwed together with the connecting block (P- and R-block) and the terminal block by tensioning bolts. A single valve of different functions can also be combined with additional functions by means of the selection of its bottom plate (for example: a pressure relay is installed in the actuator circuit). Use a pipe connection block or transition plate to connect directly to a plate-connected pump station (HK, HC, MP, FP, R-type). Terminal blocks for various functions (for example, a pressure relay or an accumulator unloading valve in the P line) can be expanded. This combined valve block is combined with HAWE's pumping station for extremely compact high-pressure system hydraulic control. Maximum pressure Pmax = 500 to 700 bar Maximum flow rate Qmax = 6 to 120 l/min.

HAWE Harvey WN and WH series cut-off reversing valves
HAWE Harvey WN and WH series of cut-off reversing valves are a plate-type leak-free sealed steel ball-cut structure reversing valve and are available in four sizes. Since some parts of the valve are assembled in the electromagnet, the structure of the valve is more compact. The two-position two-way and two-position three-way are the basic structural forms of the reversing valve. The valve is fitted with a bottom plate to become a pipe-type directional control valve, and an optional valve (such as a pressure limiting valve or a bypass check valve) can be selected on the bottom plate, thereby further expanding its application range. . The two valves are assembled on a bottom plate to realize the three-way three-way and three-position four-way directional control valves. The WN type valve (only for size 1) is simpler in design than the WH type valve (no moving seal and no electromagnet alone unloading). For this reason, such a lower cost valve limits its allowable working pressure. Many valves can be connected in parallel to form the valve blocks (BWN and BWH types) required for hydraulic control systems. Maximum pressure Pmax = 350 to 450 bar Maximum flow rate Qmax = 5 to 60 l/min.

HAWE Harvey BWH and BWN series cut-off reversing valve blocks
The HAWE Harvey BWH and BWN series of cut-off reversing valve blocks are valve blocks composed of a plurality of WN or WH type cut-off reversing valve parallel plates connected to the bottom plate. The bottom plate is screwed together by a fastening bolt (P- and R-block) and a terminal block. A single valve of different functions can also achieve a combination of additional functions through the selection of its bottom plate. For example: the actuator is equipped with a pressure relay or a pressure limiting valve. Use a pipe connection block (with or without pressure limiting valve) or a transition plate to connect the pump station directly (HK, HC, MP, FP type) or directly to other types of directional control valves. Terminal blocks of different functions (for example, pressure relays in the P-channel or accumulator unloading valves) can be expanded. This combination of valve blocks is combined with our pumping station for extremely compact high-pressure system hydraulic control. Maximum pressure Pmax = 350 to 450 bar Maximum flow rate Qmax = 5 to 60 l/min.

HAWE Harvey VZP series cut-off reversing valve
HAWE Harvey VZP series cut-off reversing valve is a plate-type non-leaking steel ball and cone valve sealed cut-off reversing valve. The valve differs from a single valve consisting of similar or identical components: the solenoid of the valve and the two 2-position 2-way and/or 2-position 3-way reversing valves are always installed In a common valve body. According to the pairing, it can form a single 4-position 4-way, 3-position 4-way, 3-position 3-way reversing valve or two independent 2-position 3-way and 2-position 2-way reversing valves. Compared with the traditional single-plate valve, the valve has the advantages of small installation position and direct assembly of monitoring actuator pressure relay. In particular, a plurality of VZP type valves can be combined in parallel to form a group of valve blocks (BVZP type), and have the advantage of being more compact. Maximum pressure Pmax = 250 to 450 bar Maximum flow rate Qmax = 5 to 15 l/min.

HAWE Harvey BVZP series cut-off reversing valve block
HAWE Harvey BVZP series cut-off type reversing valve block is composed of VZP1 type cut-off type reversing valve connected in parallel on the bottom plate. The connection is to tighten the various valves and the connecting block and the terminal block by tightening bolts. The base plate can be used for additional functions (eg one-way throttle) and can be pressure regulated for a single valve. If necessary, a pressure relay can also be installed for the A and B working ports on the end face of a single valve. For a tubular connection, a connection block with or without a pressure limiting valve can be assembled. Through the connection of the corresponding transition plate, it can be directly combined with the pump station and other reversing valves. Various terminal blocks (eg pressure relays with or without P-oil) can expand the application of this valve block. This combination of valve blocks and our pumping station enables a wide range of compact hydraulic system control functions. Maximum pressure Pmax = 450 bar Maximum flow rate Qmax = 15 l/min.

HAWE Harvey EM, EMP series two-position two-way spiral directional control valve
HAWE Harvey EM, EMP series two-position two-way spiral type directional control valve is a kind of shut-off valve in the form of cone valve core structure. The operation mode is direct-acting and pilot-operated. The direct-acting structure is a passage for the poppet to directly open and close the valve, and the pilot-type structure is to open or close the pilot control hole to form a pressure difference on the end face of the multi-stage spool and to open or close the main spool Force. The EMP type is a proportional flow regulating valve that has no leakage when it is closed. The electromagnet is a pressure-resistant wet electromagnet whose internal parts are surrounded by oil and require no maintenance. Tubular connections and right angle joints are available with a choice of connection blocks with or without additional components (unloading valve, bypass throttle, pressure relay and two-way governor). The maximum pressure Pmax = 450 bar and the maximum flow rate Qmax = 1 to 120 l/min.

HAWE Harvey BVG, BVE and BVP series cut-off reversing valves
HAWE Harvey BVG, BVE and BVP series of directional reversing valves include two sizes of two-way two-way and two-position three-way reversing valves with a leak-free cone core structure. All connectors can be loaded due to the internal static pressure balance. The connection method is tube-connected (BVG) plate-connected (BVP) or spiral-mounted (BVE). Different modes of operation open up a wide range of prospects for the application of this type of valve. Additional components in the valve block (eg, spiral throttle, bypass check valve) can further expand the field of application of such valves. The maximum pressure Pmax = 400 bar and the maximum flow rate Qmax = 20 to 50 l/min.

HAWE Harvey HSV series lifting valve
HAWE Harvey HSV series lifting valves are mainly used to control the lifting device of single-acting cylinders. The valve is integrated with a two-way two-way shut-off valve that controls the load drop and is integrated with an adjustable flow valve that limits the rate of descent, or integrated with a two-way speed control valve that is essentially independent of the load to achieve lift hydraulic control. An integrated, assembled relief valve is used to limit the allowable load. An additional assembled check valve prevents the load from falling out of control. The lift valve can also be mounted on a self-contained connection plate. The maximum pressure Pmax = 315 to 400 bar and the maximum flow rate Qmax = 20 to 120 l/min.

HAWE Harvey CR series control valve (press control valve)
HAWE Harvey CR series control valves (press control valves) are available in two sizes and are used to control lower piston and upper piston presses driven by dual pumps. The control valve is composed of a two-position two-way ball shut-off valve, a check valve and a pressure valve. When the press needs to fast forward, the high and low oil lines supply oil at the same time. When the low pressure value reaches or exceeds, the valve can switch all the low pressure oil lines to the unloading state. At the same time, the high pressure oil circuit enters a pressed state. Automatic and effective unloading achieves a balanced decompression. The control valve can be directly connected to the MP and RZ hydraulic pumping stations. Maximum pressure Pmax: HP 400 bar, NP 30 to 60 bar, maximum flow Qmax: HP 8 to 20 l/min, NP 80