Cast check valve 1. Design & manufacture: api6d, ansi b16.34, bs1868 2. Bolted bonnet, swing type disc, 3. Size range: 2" to 24". 4. Pressure ratings: ansi 150, 300, 600, 900 , 1500 5. End connections: flanged, butt weld. 6. Materials: wcb, lcb, cf8, cf8m, cf3, cf3m, wc6, wc9, c5, c12 or equivalent, 7. Various trim materials available to suit service conditions 8. Nace mr 0175 on request Exporting standards case
Nominal pressure: pn1.6, 2.5, 4.0, 6.4mpa Strength testing seat testing pressure(low pressure): 0.6mpa Strength testing pressure: pt2.4, 3.8, 6.0, 9.6mpa Applicalbe temperature: -100~500.
Tilting disc check valves, TFC China. Sea worthy plywood cases.
Stainless steel SS 304 / 316 (CF8 / CF8M) body, disc, and spring disc check valves suitable to mount between two flanges. Rating PN10/16/40.
Features: Swing Type, Bolted bonnet Standard Material available in: Body/Bonnet: Cast Iron and Ductile Iron Disc: Cast Iron or ductile iron Seat: Brass Handwheel: Cast Iron or Ductile iron Size ranges available from 2" through 12" Pressure Rating in ANSI 125 & ANSI 150 Operation: Manual Technical Data Design & manufacture: ANSI B16.10, MSS SP-71 Face to face dimension: ANSI B16.10, MSS SP-71 Flanged dimension: ANSI B16.1/16.5 Inspect and test: ISO 5208/API598. Depend on the detailed information you will requested.
'AMCO' "Super Check" Dual plate check valves - face to face reduced to 25% & weight to about 20% compared to convention swing check valves.
'AMCO' Non slam check valves - robust -> light weight -> compact -> economical.
Swing check valve bs5153, external lever arm and weight option Materials:cast iron or ductile iron Standard: bs5153, din3202/ansi also available Sealing: metallic seated/resilient seated Pressure: pn10/pn16 Ball check valve are also applicable. In plywood cases
Api swing check valve:class 150, class 300, class 600, class 900, class 1500, class2500 Api piston-lift type check valve:class 150, class 300, class 600, class 900 Api high pressure check valve: class 1500, class2000, class 2500 Body: wcb, a315 cf8, a351 cf3, a351cf8m, a351 cf3m Stem: wcb, a315 cf8, a351 cf3, a351cf8m, a351 cf3m Packing, gasket: flexible graphite+stainless steel strip(net) Applicable medium: water, oil, steam, nitric acid, strong oxidizing medium, acetic acid, urea category Check valve: pn1.5-10mpa dn15-300 150-2500lb 1/2-42. Package: wooden crate or according to customer's requirements.
Material: C.S., C.I., G.M. Pr. Rating- pn-1.0 to class-300# Seat: rubber to metal.
Iwp check valve body integrated with inlet and outlet of water, utilized the fatigue resistance metals, special technology, and precise processing makes iwp check valve high quality in the worldwide. Its working pressure is up to 55, 000psi. Longevity is about 3000 hours. If it could come with check valve ass., its lifetime may extend longer, and more effective.
It's a set of repair kit used on check valve. Including inset-outlet, poppet-outlet, spring-outlet, poppet-inlet, bolt-inlet, poppet cap-inlet, o-rings. It's easily to maintenance and replacement.
Close to '0' leakage. Connection range from 1/4' - 3-1/8' inch. Magnetic valve disc allows free installation position. Export carton
Size: 2"-40" (investment cast) Pressure ratings: ANSI Class 150-2500Lbs Body: WCB,CF8(304),CF8M(316),CF3(304L),CF3M(316L), special low temp. steel, alloy steel End conn.: RF,RTJ,WNF,BW Design,Manufacture & Marking: API6D, ASME B16.34 Test: API598 Wooden case
Dual-Plate check valve DN50-DN600, wafer type, WCB, 304, 316, 304L, 316L available body Conforming to ANSI, API, JIS, DIN, NF, BS, GB standards for the lines of petrol, chemistry, metallurgy and light industry
API Swing check valve Applicable standards - Steel valves, ansi b16.34 - Face to face, ansi b16.10 - End flanges, ansi b16.5 - Buttwelding ends, ansi b16.25 - Inspection and test, api 598
Whenever there is a new sample of AAK hydraulic valves, I must put it on the desk for a few days. Take a look at the hydraulic check valve with the same attitude of appreciating works of art, and taste a cup of coffee. The work is so simple. The parameters of AAK hydraulic check valves have surpassed most of the domestic hydraulic valve counterparts, and the appearance is also beyond what the 10-year-old hydraulic check valve manufacturers are able to keep pace with. AAK hydraulic valves have no quality complaints for 6 consecutive years. In 2019, AAK hydraulic check valves were used on aircraft by a Russian customer, which is a witness of good quality. AAK hydraulic check valve, how good is it? See the visual comparison in the picture below. Only from the appearance, the hydraulic check valve produced by 10 years old factory has lost. Not to mention meeting the parameters of hydraulic check valve using in aircraft, they may not dare to think or do it. AAK hydraulic valves is an ODM manufacturer for international first-line hydraulic valve brands. It is difficult to find the third one in Ningbo, the hometown of hydraulic valves. You can also have a small try. AAK HYDRAULIC VALVES (198) 2022-04-16
Last Friday, we received 3 emails from Niki, they are all the order for a same hydraulic check valve, but only the ship to address is different. It is the first time for their company to place the orders of 1,500 hydraulic check valves at one time. Niki is a purchaser of a Dutch hydraulic equipment company. Last year, a boarding bridge equipment needed hydraulic check valves. At that time, he planned to purchase from old suppliers. Unexpectedly, after dozens of hydraulic check valves from the initial samples were installed on the boarding bridge and tested for less than a month, the boarding bridge will slowly decline automatically. The engineer judged that the hydraulic system did not maintain the pressure, and it is likely that some hydraulic check valves leaked. However, after disassembling and inspecting the hydraulic check valves, it was found that the matching clearance accuracy of the valve spool and valve sleeve was within the normal range, and there was no jamming. Niki contacted the hydraulic check valve manufacturer, and manufacturer also didn't know why the hydraulic check valve leaked, so they could only replace those leaking hydraulic check valves. Niki is a little worried that if the leakage source of the hydraulic check valve is not found and replaced blindly, there may be a bigger problem later. Niki was not satisfied with the old supplier and had to start looking for new manufacturers of hydraulic check valves again. AAK received message from Niki on our website: what are the reasons for the leakage of hydraulic check valves? I realized that there was a leak in the hydraulic check valves purchased by Niki, but he hasn't found the root cause. After receiving the drawings of hydraulic check valve and the working conditions of boarding bridge equipment provided by Niki, we still can't 100% determine what caused the leakage of hydraulic check valve. We suggest him send us one of the previously leaked hydraulic check valves for analysis. After dismantling, our engineer is 90% sure to understand the root cause of the leakage, but still need to try sample to make it 100% sure. Niki is also willing to allow AAK to make samples according to his hydraulic check valve drawing. One month later, we sent 12 samples of hydraulic check valves to Niki and told him that the leakage of the hydraulic check valves from original manufacturer should be caused by poor details in production. There will be a certain gap between the cap and the thread of the valve sleeve of the hydraulic check valve. How to seal this gap is not only the detail but also the key, especially for the equipment with high working conditions. AAK uses thread anaerobic adhesive, which can completely fill the gap, enhance the sealing or retention force of mechanical connection components, prevent thread loosening and leakage due to vibration between the cap and valve sleeve of hydraulic check valves, and protect the joint from corrosion. Few hydraulic valve manufacturers
In March this year, the sales manager of Caterpillar received a phone call from a Spanish customer complaining that several excavators produced by their company had small start-up faults. The repairman judged that the hydraulic system leaked oil, which should be caused by the leakage of the hydraulic check valve. The customer asked them to replace the hydraulic check valve as soon as possible. This customer accounts for 40% of Caterpillar's sales. Although it has passed the maintenance period, they must help the customer solve the problem. The original hydraulic valve supplier said that for the hydraulic check valve under this working condition, there can only be no leakage for 2-12 months. In extreme cases, it may be less than 2 months. The customer was disappointed with such a maintenance plan. The owner asked Mark, the purchasing manager, to find a solution satisfying the customer. Mark contacted more than 10 hydraulic valve manufacturers, but did not get a satisfactory reply. He owner urged him to make a new plan twice a day. Mark thought of AAK HYDRAULIC VALVE he had contacted before. Maybe AAK can do some help. He firstly asked us why so many hydraulic valve manufacturers can't achieve 0 leakage for more than 12 months for this style of hydraulic check valve? The hydraulic check valves often use steel ball or metal cone slide valve to contact and compress with the orifice of metal valve seat under the action of spring and fluid pressure to prevent the reverse flow of liquid, but it is difficult to achieve absolute seamless butt joint in the cutting of metal contact surface. Especially under the special working condition of this customer, it is more difficult to avoid leakage. This hydraulic valve manufacturer who has insured for 2 months is already great. Mark thought that AAK HYDRAULIC VALVE could not produce a hydraulic check valve with 0 leakage for more than 1 year, and asked how long we could insure at most. AAK can produce hydraulic check valve with 0 leakage for more than 12 months. If there is no leakage within 1 month, and if subsequent maintenance is in place, the hydraulic check valve can be 0 leakage for 24 months. Mark was surprised at our reply and thought we were joking. Let's talk about it with facts: AAK will send the hydraulic check valve samples within 20 days, you test the hydraulic check valve first, and we will then discuss it after the test. After 15 days, AAK sent the hydraulic check valve samples to Caterpillar. Their engineers conducted internal test first, and there were no abnormalities in many tests. Their after-sales personnel took the samples directly to the customer's construction site for on-site installation and commissioning. It worked continuously for 12 hours, and everything was still normal.
When I got up to go to the bathroom at 1 a.m. last Monday, my wechat phone rang. It was from Carl, the purchasing manager of Denison hydraulic pump company in the United States. I was very surprised by this phone call. Generally, we communicate with Carl in the form of e-mail and have never used wechat phone. Carl firstly said sorry to disturb my rest, and asked if I could arrange a video conference at 8:00 tomorrow morning. He needs to discuss a troublesome problem with our technical team. I'm concerned that the communication on the phone will not be clear, and asked him to send me a written email first, and then I'll reply to him. Half an hour later, a detailed email with a schematic diagram of the hydraulic system came in. Last week, the hydraulic pump supplied by them encountered problems with his customer. The customer's hydraulic system has been shelved for half a year, and now it needs to be driven. After the operator starts the hydraulic pump, there is no pressure in the hydraulic system. The field engineer judged that there was no flow output of the hydraulic pump, but after inspection, it was found that the rotation direction of the motor was consistent with that of the hydraulic pump, and the oil level, oil temperature and viscosity of the hydraulic pump met the working conditions. The suction system of the hydraulic pump was replaced, including the oil suction pipe and filter. After startup, there was still no flow output. The transmission parts inside the hydraulic pump are intact without falling off, fracture and blade jamming. A week has passed and no reason has been found. Because the hydraulic pump is still in the warranty period, if it cannot be solved in another week, it can only be returned for claim. Carl asked the original supplier of each part for the hydraulic pump and got nothing. After reading the email, I asked him if the hydraulic pump used a hydraulic check valve? Carl said that the hydraulic check valve was provided by HAWE company in the United States, but the after-sales period of the hydraulic check valve has expired. Because AAK supplied hydraulic check valves to their company last year, and the quality was very satisfying, although the hydraulic check valve in this hydraulic pump is not from AAK, he wants to see if AAK technical team can find out the reason. I said there was no problem with the 8:00 video conference tomorrow, because the chief engineer of AAK didn't travel, but I'm not sure if we can help. The next day in the video conference, their engineers showed the whole system. Our chief engineer found that the displacement of the hydraulic pump was 8ml / R, so he asked them to fill the hydraulic pump directly in the oil outlet pipeline, and then start it up. The hydraulic pump still had no flow.
