Proportional Relieve Valve

Auto Proportion Valve PV4

Automatic Control Valve, Dual Setting Pressure Reducing Valve. Proportional Pressure Reducing Valve Work by Flow Rate (Model 132-090) controls pressure proportionally according as rate of flow. When rate of flow increase in pipeline, the valve operate higher pressure. When rate of flow decrease , the valve operate lower pressure. Therefore, Model 132-090 controls outlet-pressure proportionally according as rate of flow, even if the rate of flow change arbitrarily or slightly. Model 132-090 is optimized in waterworks, in state of smooth pressure change in pipeline. Also 132-090 have the function to prevent hunting itself.

When using hydraulic valves with proportional drop function , The falling speed of the cylinder can be controlled by the stroke of the control handle .

Dual-function Hydraulic Cartridge Proportional Needle valve, AAK customized part replaced HydraForce standard part Devante is from a Spanish hydraulic equipment manufacturing company, and has been engaged in procurement for more than 5 years. Last February, they upgraded an injection molding machine, focusing on the selling point of "high speed when empty, low speed when heavy load". The engineer asked Devante to purchase the hydraulic cartridge proportional needle valve of HydraForce. During the equipment commissioning, it was found that the pressure relief and flow of the hydraulic system of the equipment was conflicted with the hydraulic cartridge proportional needle valve, resulting in unstable operation of the equipment and jitter. HydraForce said that there was no time to customize the hydraulic cartridge proportional needle valve. Devante contacted several cartridge valve manufacturers and had no news. Devante was very worried. Devante browsed AAK website on Google and left a message: 1. Can AAK customize the hydraulic cartridge proportional needle valve, and the performance benchmarking HydraForce? 2. The function of smooth flow passage is required. 3. The function of variable flow gain is required. At the beginning, I thought that he was requested for AAK hydraulic cartridge proportional needle valve to benchmark the standard parts of HydraForce, but it was turned out that he needed us to optimize the standard parts of HydraForce. According to the equipment abnormality video, the original hydraulic cartridge proportional needle valve drawing, and their required functions sent by Devante, after discussion, AAK engineers was 90% confident. Devante asked AAK to make samples. After 40 days, AAK sent 15 samples of cartridge proportional needle valves. 2 months later, Devante informed that the market promotion of the upgraded equipment was smooth. Their engineers were satisfied with AAK hydraulic cartridge proportional needle valves, especially its variable flow gain characteristics, and smooth flow characteristics, small pressure impact during pressure relief, and accurate flow control. We mainly made 3 ingenious actions on the valve housing and valve spool, and solved the problem that HydraForce didn't want to do. 1. The lower part of the valve spool is arranged in the valve housing and sealed with the valve housing line. The upper part of the valve spool is connected with the control cover plate, the upper end of the control cover plate is connected with the valve cover with threaded holes, and the displacement sensor is installed on the threaded holes of the valve cover. The lower end of the valve spool is connected with the upper cavity of the valve spool. When the valve spool is at the lowest end, the valve is closed. When the valve spool moves upward, the valve gradually opens.

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For Hydraulic Electro-Proportional Priority Flow Control Valve Cartridge equivalent to HydraForce PV72-30, received re-order from client This Monday, we launched an Electro-Proportional Priority Flow Regulator Valve Cartridge equivalent to HydraForce standard part PV72-30. It is a solenoid operated, pressure compensated, spool type, normally closed, proportional priority flow control valve. The features of this proportional priority flow control valve: Excellent linearity and hysteresis characteristics. Optional coil voltages and terminations. Efficient wet-armature construction. Cartridges are voltage-interchangeable. Unitized, molded coil design. Coil waterproofing standard. Manual Override option. A customer in placed a test order for 10 pcs last June in 2022. After 1 year of testing, it proves that the function and performance of hydraulic proportional priority flow control valve benchmarked the quality of HydraForce PV72-30. Today, we received their re-peat order for 1,000 pcs qty. hydraulic solenoid operated proportional priority flow control valve 2 advantages: 1. Internal leakage: 0.38 lpm Max. at 207 bar (3000 psi), 0 current, benchmarking HydraForce 2. Its service life is 2 times that of its peers Technical parameters of E-PV72-30 hydraulic solenoid operated proportional priority flow control valve: Max. Operating Pressure: Port 1: 240 bar (3500 psi); Port 2 and 3: 207 bar (3000 psi) Flow: See PRESSURE DROP VS. FLOW graph Internal Leakage: 0.38 lpm (0.1 gpm) Note: Max. at 207 bar (3000 psi), 0 current Cavity: 12-3 The newly launched E-PV72-30 hydraulic solenoid operated proportional priority flow control valve, benchmarking HydraForce PV72-30, has been approved by customer in after 1 year of testing. You are welcome to try it out.

For Pilot-Operated Pressure Reducing/Relieving Valve equivalent to SUN PPDB-LDN, AAK received the re-peat order from customer in Europe Last April, we shipped a Pilot-Operated Pressure Reducing/Relieving Valve equivalent to SUN PPDB-LDN to a customer in Europe. Yesterday, we received a re-peat order of 500 pcs for this valve. This is really great news for us, because it means that the quality of E-PPDB-LDN Pilot-operated, pressure reducing/relieving valve shipped by AAK has been approved by this customer, and AAK is getting another customer in Europe. The advantages of this pilot operated pressure reducing/relieving valve are: 1. The quality of this valve is benchmarking SUN Hydraulics, but price is much cheaper. 2. The service life is 2 times that of domestic hydraulic cartridge valve manufacturers in China Technical parameters of AAK E-PPDB Hydraulic Pilot-operated, pressure reducing/relieving valve: Max. Operating Pressure: 350 bar (5000 psi) Capacity: 10 gpm (40L/min) Control Pilot Flow: 7 - 10 in�?�³/min. Cavity: T-11A AAK E-PPDB hydraulic Pilot-Operated, Pressure Reducing/Relieving Valve, benchmarking SUN Hydraulics PPDB, its service life is 2 times that of its domestic peers. You are welcome to give it a try. AAK HYDRAULIC CARTRIDGE VALVES (791) 2024-04-09

AAK's 3 tips to ensure that the Proportional Valve is free of jamming, winning the affirmation of customers in Turkey Ewalz is from Turkey, and mainly purchases standard parts of hydraulic cartridge valves from Ningbo China. Recently, they developed a hydraulic manifold that requires the use of SUN proportional valves. He purchased it from a proportional valve manufacturer in Ningbo, and after 2 weeks of operation, the equipment experienced significant vibration. The on-site engineer found that the proportional valve was severely stuck. The original hydraulic valve manufacturer stated that this proportional valve is a replica of SUN, with fully calibrated parameters, but there are differences in performance. Ewalz was speechless and had to look for a new hydraulic valve manufacturer for this proportional valve. Ewalz browsed the AAK hydraulic valve website, stayed for nearly 15 minutes and left a message: 1. Does AAK have an existing program for benchmarking SUN proportional valves? 2. Can AAK completely solve the problem of valve spool jamming, vibration and noise? After communication, it was learned that the hydraulic manifold they developed was very tight on time, they had no time to customize it and could only choose the existing SUN proportional valve. The proportional valve produced by the original valve manufacturer has the same function as SUN, but has poor performance. This SUN proportional valve is widely used, and AAK have a record of 6 shipments last year. There has never been any jamming of the valve spool, and we have inventory, which fully meets his requirements. 2 weeks after AAK sent the SUN proportional valve samples, Ewalz informed us via email that the hydraulic manifold debugging was successful. 2 months later, Ewalz informed us that their engineers were satisfied with the AAK proportional valve. The root cause of unsatisfactory performance of the original valve manufacturer's SUN proportional valve lies in its accuracy. The vast majority of proportional valve manufacturers have a cylindricity machining accuracy greater than 5um, which is 70% lower than the SUN standard cylindricity. For the accuracy of proportional valves that is completely in line with the SUN standard parts, there are probably less than 3 hydraulic valve manufacturers in Ningbo China. AAK controls the accuracy of the proportional valve from 3 aspects: 1. AAK proportional valve spool control: The valve spool is produced using a German CNC lathe with one blade and then high-precision cylindrical grinding. The machining error is controlled within �± 1um, and the coaxiality and cylindricity are controlled within 3um. 2. AAK proportional valve hole control: Adopting Swiss honing processing, the accuracy can reach IT6-IT7 level, and the surface roughness can reach Ra0.2-0.025um.

Supplier: Proportional valve, flow control valve, modular valve, cartridge valve, directional valve, manifold block