Pressure Relief Valve

Pressure relief valves Long life diaphragm with range of 0-150 PSIG. Air release, optional gauge port and available in PVC, CPVC, PVDF, Teflon, Polypropylene, stainless, alloy 20 and hastelloy C. & sizes are available from 1/4" to 2' NPT. Our color coded handles indate size, and they are also available for higher pressures and temperatures.

Description: To ensure safety, the drilling pump is equipped with safety valve in the outlet, which is able to control the ultimate pressure of the pump within the admitted scope. The high pressure safety valve is forged by high quality structural alloy steel. As a kind of protection device and human safety device, it is generally installed on cementing devices, fracturing pump, high pressure operation piping, pressure vessel and devices under high pressure and high flow capacity. It controls elastic force of the valve seat by adjusting the nut on the top. Once the pumping pressure or piping pressure exceeds pre-established pressure value, safety valve opens automatically to release the pressure. When the pressure value reaches the normal value, valve rod will recover the position by spring and close the valve.

To ensure safety, the drilling pump is equipped with safety valve in the outlet, which is able to control the ultimate pressure of the pump within the admitted scope. The high pressure safety valve is forged by high quality structural alloy steel. As a kind of protection device and human safety device, it is generally installed on cementing devices, fracturing pump, high pressure operation piping, pressure vessel and devices under high pressure and high flow capacity. It controls elastic force of the valve seat by adjusting the nut on the top. Once the pumping pressure or piping pressure exceeds pre-established pressure value, safety valve opens automatically to release the pressure. When the pressure value reaches the normal value, valve rod will recover the position by spring and close the valve.

The angle error of inner cone of AAK hydraulic relief valve sleeve is controlled within ± 0.8 , and the minimum axial grinding tolerance of sealing circle is 0.07m. At the same time, it is inspected by three coordinate measuring instrument to ensure that the hydraulic relief valve is 100% leak free. After comparing more than 10 hydraulic valve manufacturers, Backhaus determined that AAK hydraulic valve is the most reliable hydraulic relief valve manufacturer. At present, in the manufacturing process of hydraulic relief valve, when grinding the conical surface inside the valve, most hydraulic valve manufacturers just let the operator judges the feed rate, angle control and grinding tolerance by experience completely. There is no grinding amount detection link, and there is no precision detection of each part in the valve. When this type of common quality hydraulic relief valve is used on equipment with high requirements, troubles will come out. Backhaus is a purchaser of a German hydraulic pump company for less than a year. In the first half of the year, a batch of hydraulic pumps of their company were complained by customers. After the hydraulic pump is started, the system pressure begins to lose stability and there is pressure drift. The engineer judged that there was a problem with the hydraulic relief valve. After disassembly, it was found that there was a gap between the valve sleeve and valve spool of the hydraulic relief valve. After measurement, it was found that the error of the cone angle in the valve sleeve of the hydraulic relief valve was too big and caused leakage of the hydraulic relief valve. The only solution is to replace the hydraulic relief valve. It is estimated that 30% of hydraulic relief valves need to be replaced. The owner asked Backhaus to replenish the goods as soon as possible and solve the customer complaints. Backhaus contacted the original manufacturer of the hydraulic relief valve. The manufacturer was willing to replenish. Backhaus thought it would be all right after replacing the hydraulic relief valve. A month later, the customer complained again, which is still the same problem. This shows that the quality of the hydraulic relief valve from the old manufacturer is not trustworthy, and it is urgent to replace the hydraulic relief valve supplier. Backhaus contacted more than 10 hydraulic relief valve manufacturers, including AAK hydraulic valve. The hydraulic relief valve is required to be 100% leak free. AAK hydraulic valve and other 3 manufacturers are required to send samples for testing according to his hydraulic relief valve drawings and working conditions. A month later, Backhaus asked us about the production time of replenishing 30% hydraulic relief valve. It should be that AAK hydraulic relief valve has been recognized by the customer.

On Monday afternoon, I received an email from Tony. Tony is a purchasing manager of CASAPPA in Italian, mainly responsible for the purchasing of hydraulic pump components, and the work has been very smooth. Last month, they received a complaint from the largest customer that the pressure at the outlet of the hydraulic pump sometimes rises by itself, resulting in unstable operation of the equipment. The customer's site engineer couldn't solve it and turned to CASAPPA for after-sales service. Although the warranty period has expired, they still need to help customer solve the problem. Their engineers tested various parameters of the hydraulic pump. After comprehensive analysis, they were still uncertain about the root cause, but they suspected that the hydraulic pressure relief valve in the pump is faulty. The engineer asked Tony to contact the original supplier of the hydraulic pressure relief valve and ask him to send a sample of the hydraulic pressure relief valve for replacement and test. It is a local hydraulic valve manufacturer and they still have samples in stock. After receiving samples and commissioning, the engineer's suspicion was proved to be correct. After replacing the hydraulic pressure relief valve, the hydraulic pump worked normally. Tony asked the original hydraulic valve manufacturer to urgently replenish 30 hydraulic pressure relief valves to solve this complaint. The manufacturer said that the shipment has passed the two-year warranty period. At present, there are only 3 samples in stock. The remaining quantity needs to wait in production schedule for production, and can only be delivered after 3 months. If offering this plan to the big customer, Tony would be scolded by the boss. He thought of AAK, because the hydraulic valve failed last year, which was also solved by AAK. Tony established a business relationship with us last October. Now we are also friends besides business. We often discuss the knowledge related to hydraulic valves. His email on Monday is just to ask for help on this hydraulic pressure relief valve. After knowing these conditions, I asked him to send us samples of those faulty hydraulic pressure relief valves, and provide us the drawings of this hydraulic pressure relief valve, noting those special requirements. After receiving and disassembling the samples from Tony, we found that the main valve spool of the hydraulic pressure relief valve was too loose and had increased leakage, then the pressure at the oil outlet increased. The problem should be caused by high-frequency wear or insufficient accuracy of the original shipped hydraulic pressure relief valve. The engineer of CASAPPA asked us to reply why it was determined that it was the problem of the valve spool?

On Monday afternoon, I received an email from Tony. Tony is a purchasing manager of CASAPPA in Italian, mainly responsible for the purchasing of hydraulic pump components, and the work has been very smooth. Last month, they received a complaint from the largest customer that the pressure at the outlet of the hydraulic pump sometimes rises by itself, resulting in unstable operation of the equipment. The customer's site engineer couldn't solve it and turned to CASAPPA for after-sales service. Although the warranty period has expired, they still need to help customer solve the problem. Their engineers tested various parameters of the hydraulic pump. After comprehensive analysis, they were still uncertain about the root cause, but they suspected that the hydraulic pressure relief valve in the pump is faulty. The engineer asked Tony to contact the original supplier of the hydraulic pressure relief valve and ask him to send a sample of the hydraulic pressure relief valve for replacement and test. It is a local hydraulic valve manufacturer and they still have samples in stock. After receiving samples and commissioning, the engineer's suspicion was proved to be correct. After replacing the hydraulic pressure relief valve, the hydraulic pump worked normally. Tony asked the original hydraulic valve manufacturer to urgently replenish 30 hydraulic pressure relief valves to solve this complaint. The manufacturer said that the shipment has passed the two-year warranty period. At present, there are only 3 samples in stock. The remaining quantity needs to wait in production schedule for production, and can only be delivered after 3 months. If offering this plan to the big customer, Tony would be scolded by the boss. He thought of AAK, because the hydraulic valve failed last year, which was also solved by AAK. Tony established a business relationship with us last October. Now we are also friends besides business. We often discuss the knowledge related to hydraulic valves. His email on Monday is just to ask for help on this hydraulic pressure relief valve. After knowing these conditions, I asked him to send us samples of those faulty hydraulic pressure relief valves, and provide us the drawings of this hydraulic pressure relief valve, noting those special requirements. After receiving and disassembling the samples from Tony, we found that the main valve spool of the hydraulic pressure relief valve was too loose and had increased leakage, then the pressure at the oil outlet increased. The problem should be caused by high-frequency wear or insufficient accuracy of the original shipped hydraulic pressure relief valve. The engineer of CASAPPA asked us to reply why it was determined that it was the problem of the valve spool?

Model 133-040 consists of Robocon Valve (BALEM 130), Pressure Relief Pilot Valve and Pressure Reducing Pilot Valve. The valve is installed at Bypass line for protecting pumps and pipe-line systems from dangerous surges caused by rapid changes of flow velocity within a pipeline. The valve has anticipated the down pressure caused by the abrupt stopping of the pump and opening, closing of valve, immediately opens to prevent high pressure in pipeline and has to minimize high pressure, relieves excessive setting pressure.

bellows Pressure relief valve 5.7A25 Since its establishment, YOYIK has always adhered to the principle of technology first and quality first. It has a team of senior engineers and technical workers in the industry. They integrate their rich experience in power station construction into product design and manufacturing to ensure efficiency and accuracy in every link. The company provides a full chain of services from equipment selection to after-sales maintenance, guided by customer needs, continuously optimizes solutions, and promotes the development of the energy industry. In order to support the operation of the power plant, we have prepared various parts inventory as follows: #DF-bellows Pressure relief valve 5.7A25-DF HP globe valve KHWJ10F1.6P DN10 PN16 Stainless steel globe valve J41W-25P BYPASS NRV SIZE 2" TC11 BEARING 2JJQ52 test hose M20*1.5/1000A.CSH. Manhole O-ring HB4-56J8-97 O RING 212�?5.3, VITON Stacked hydraulic control check valve Z2S6-1-60B Accumulator NXQAB-40/31.5-L-A EH oil specialized shock-absorbing pipe clamp �¦14/SP214PA-DP-AS The electromagnetic valve Z2805041 Spring pin kit f7x40 M3271 solenoid valve GS061200N Reducer M12250BGCC1D1.5A The electromagnetic valve ADK11-15A-D2H AC220V cushion for PUMP ALD320-20X2 Thrust disk tightening nut DG600-240-03-25 Gasket DN80 P2120A-55C P2120A-55C The electromagnetic valve 22FDA-F5T-W110-20/LV\G1/4 main sealing oil pump coupling DLXB820-R67 pressure hose S110-AC-AL-0320 Tapper Roller Bearing NJ 207 gear box automatic MO2225.OBMCC1D1.5A servo valve SH736001A0722B Accumulator spare parts kit NXQ-AB-16/20-L-Y Solenoid valve directional valve 4WE6Y50/AC220NE4VMFZ3-22YC DC220V 30W oil pump V20F-1S13S-1C11K Fixed cooling pump outlet regulating valve diaphragm KS125ZXN016BQ12SNOERH insertion plate 0508.919T0104.06AW DB24 Gear Reducer Assly XLD-4 O-RING RUBBER HB4-56J8-181 bellows Pressure relief valve 5.7A25 bellows Pressure relief valve 5.7A25 MY-DFYL-2024-7-31

Features and Benefits Automatic control valve, running by itself. One complete combined disc, easy for maintenance. Diaphragm type; quick response against pressure change. Relieving pressure can be adjusted. Once Pipeline system pressure less than the discharge pressure, valve will be switch off quickly. Applicable Standards Flange standard: BS EN 1092-2 Face to face standard: EN558 Series10 Technical Data Nominal Diameter:DN50~DN400(2"~16") Nominal pressure: PN 16 Temperature range: -5C ~ +85C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.