MARINE FLANGE CAST IRON MANUAL PROPORTIONAL VALVE, MANUAL PROPORTIONAL FLOW VALVE, MANUAL PROPORTIONAL FLOW COMPOSITE VA

Csbf manual proportional flow directional composite valve
Marine manual proportional flow directional composite valve csbf-g25

Let's first familiarize ourselves with the working principle of csbf manual proportional flow composite valve
Principle of pressure compensation mechanism of marine manual proportional flow composite valve csbf-G25:

The oil in the motor pipeline flows from the oil inlet (Port P) of the manual proportional valve to the load (port a or port B) through the throttle port of the main valve element. At the same time, the lower surface of the diverter valve element also receives a force to push the valve element upward. The magnitude of this force is P1A (a is the cross-sectional area of the valve element). The pressure P1 decreases to P2 due to passing through the throttle port. P2 acts on the upper surface of the valve element to push the valve element downward, In addition, the action of the spring causes the valve core to receive a downward pushing force, so the downward pushing force is P2a + F (F is the spring force). If P2a + F ＞ P1A is established, the valve core will be pushed downward, so that the throttle surface of the diverter valve is in a closed state, and the inflow flow is all led to the load through the throttle port of the main valve core. When the flow into port P increases, P2a + F ＜ P1A, at this time, the valve element moves upward and the throttle surface opens, so that a large amount of flow flows out from port O and the flow through the throttle port decreases. Until f / a = P1 - P2, the valve element is in a stable state. If the load pressure rises, when f / a ＞ P1 - P2, the valve element will be pushed downward to reduce the opening of the throttle surface, and P1 will also rise. Until f / a ＝ P1 - P2, the valve element will be in a stable state again. If the load pressure decreases, then f / a ＜ P1 - P2, at this time, the valve element will be pushed to the top, and the opening of the throttle surface will be increased, and P1 will drop accordingly until f / a = P1 - P2, and the valve element will be in a stable state again. Therefore, no matter how the inlet and outlet oil pressure changes, the pressure difference P1 - P2 remains constant, that is, it is constant, and the flow rate when passing through the throttle is also constant. Therefore, the flow rate is determined by its flow area and has no relationship with the change of load pressure.

Direction switching and throttling principle of main valve core of csbf-G25 manual proportional flow directional composite valve (taking M-type as an example):

When the handle is in the middle position, all oil ports (ports a and b) are closed. The oil discharged from the oil pump returns from port p to port o, and the oil motor stops.
The handle is on the right side, and the main valve element moves upward. The oil flowing in from port P flows to port a through the throttle port, and then flows out from port a to drive the oil motor to rotate. The return oil of the oil motor returns from port B to port O. at this time, the main valve element is at different positions by pulling the handle to adjust the opening of the throttle port to achieve the speed regulation of the oil motor. On the contrary, the handle is on the left side and the oil flow is from P-B to a-o. the results are completely similar, but the oil motor turns in the opposite direction.

Overflow principle of manual proportional flow compound valve csbf-G25 of windlass (safety valve part):

Similar to the principle of general overflow valve, when the load pressure of the oil motor is low, the cone valve is closed due to the spring force, and the oil motor operates normally. When the load pressure rises and exceeds the spring force on the poppet valve, the poppet valve opens and the high-pressure oil flows from port p to port o to protect the oil motor.

Use and maintenance of csbf-G25 manual proportional flow composite valve

1. When this manual proportional valve works, it is recommended to use industrial lubricating oils 46 and 68 (see gb3140-82) for the oil. The oil should be kept clean and the oil temperature should be recommended (20 ℃ - 60 ℃).
2. When installing the manual proportional flow composite valve, the installation position shall be convenient for operation and maintenance, and the installation can be in any direction.
3. The manual proportional composite valve shall be fixed on the processed base surface with screws. It is not allowed to support the valve with pipes.
4. During installation, check whether the inside of the valve is clean, and ensure that all connections are well sealed to prevent air from penetrating into the pipeline.
5. If there is leakage at the joint, check whether the installation screws, pipe threads are tightened, O-ring is missing, and the spring is damaged.
6. Remove the drain plug, install the leakage oil pipe joint, and introduce the leakage oil into the oil tank, otherwise the ball shaft at the handle will be broken (the schematic diagram of operation is as follows).

7. When the csbf-g25 manual proportional flow composite valve is operated, the operating direction and angle of the handle change, which can control the direction and flow of oil flow.
8. The two screws on the handle limit (as shown in the figure below) limit the maximum flow of the valve to reach the maximum speed of the machine.

The screw on the handle base can adjust the operating force of the handle (as shown below).

The screw on the diverter valve can adjust the flow of ports a and B (as shown below).

11. The screw on the safety valve can adjust the opening pressure of the safety valve (as shown below)

When the manual proportional valve of our windlass is used for several years, the valve will undergo different degrees of corrosion, which will cause its function to decline. At this time, we can simply analyze the fault and repair it:

When none of the above conditions can be solved, we need to replace the whole proportional valve, which will cause us a problem. Because the nameplate on the proportional valve has been corroded for a long time, it is difficult to determine the accurate model. At this time, we can accurately judge according to the following information:

The actual picture of the manual proportional flow reversing valve csbf-g25 is as follows:
According to the different functions of the slide valve of this manual proportional flow composite valve, the manual proportional flow composite valve of DN25 can be marked as follows:

Windlass control valve csbf-m-g25 (M can be omitted) manual proportional flow of windlass

Marine manual proportional flow directional composite valve csbf-h-g25
Csbf-y-g25 marine manual proportional valve, manual proportional flow directional composite valve
Marine manual proportional valve, manual proportional flow directional composite valve csbf-g25-o
If you are a new ship builder and install a new manual proportional flow compound valve for the windlass or steering gear, you can choose the corresponding model according to the designed flow (the selection table is as follows):

Windlass Control Valve - Servo Control Valve CSBF-G32
Cable twister control valve - hoist control valve CSBF-G32
CSBF-G32 Windlass Manual Proportional Valve - Marine Manual Proportional Control Valve - Manual Proportional Flow Compound Valve

CBSF-G32 Marine Manual Proportional Flow Compound Valve Product Overview:

This CSBF-G32 marine manual proportional flow valve is mainly suitable for all kinds of windlass, steering gear, hoist variable speed operation, to retract and lower the cable work.

Marine Manual Proportional Compound Valve CSBF-G32 Model Significance:

Marine manual proportional valve, manual proportional flow compound valve CSBF-M-G32 technical parameters:

(Yangzhou Feihang Ship Accessories Factory) production of manual proportional flow direction compound valve Process:

Marine manual proportional compound valve CSBF-G32 external structure dimensions:

Marine CSBF-G32 manual proportional compound valve, manual proportional flow directional valve maintenance and replacement instructions:

Due to the time factor, the nameplate of this manual proportional valve will gradually corrode, at this time we can accurately judge the nominal diameter of this manual proportional valve through the above data.

CSBF-G32 Manual Proportional Flow Compound Valve According to the function of the intermediate position spool valve, it can be divided into:

▲CSBF-M-G32 marine manual proportional flow directional valve
(Expressed as: the median function is M type, the nominal diameter is DN32, the connection method is a manual proportional valve with flange connection, and the manual proportional flow direction compound valve)

▲Marine manual proportional flow compound valve CSBF-H-G32
(Expressed as: the median function is H type, the nominal diameter is DN32, the connection method is a manual proportional valve with flange connection, and the manual proportional flow direction compound valve)

▲Marine CSBF-Y-G32 manual proportional flow directional valve
(Expressed as: the median function is Y type, the nominal diameter is DN32, the connection method is a manual proportional valve with flange connection, and a manual proportional flow direction compound valve)

▲CSBF-K-G32 marine manual proportional flow directional valve
(Expressed as: the median function is K type, the nominal diameter is DN32, the connection method is a manual proportional valve with flange connection, and the manual proportional flow direction compound valve)

▲Marine manual proportional flow directional valve CSBF-P-G32
(Expressed as: the median function is P-type, the nominal diameter is DN32, the connection method is a manual proportional valve with flange connection, and a manual proportional flow direction compound valve)

Our factory (Yangzhou Flying Ship Accessories Factory) delivery site:

Yangzhou Feihang Ship Accessories Factory provides you with this CSBF type manual proportional flow compound valve selection manual;

Yangzhou Feihang Ship Accessories Factory is a production enterprise specializing in marine pipe fittings, marine hydraulic valve parts and marine interior armored products.

The marine accessories produced by our company are complete in specifications, such as cast iron, cast steel, bronze and stainless steel, which are widely used in ships, oil and offshore platforms.

All products implement one-stop production line operation, and strictly implement the ISO9001-2000 international quality management system standards, and carry out standardized production and quality inspection.

Companies adhering to the "integrity management, mutual benefit, and common development" business purposes and "excellent products, sincere service, customer satisfaction," the quality management policy, has won the trust of our customers, is now with a number of shipyards, ship owners, and ships The unit has established long-term cooperative relationships, and its products are sold well all over the country and exported to Singapore, Taiwan, Japan, India, South Africa and other countries and regions. And has won the praise of many ship owners at home and abroad. In order to meet the needs of the market and the continuous expansion of the company's business, we are moving towards the goal of “more comprehensive, more professional and better quality” and strive to build one of the ship accessory suppliers recognized by more customers at home and abroad.