Raw Material

Our Valve Rubber Diaphragm compound from world class suppliers or domestic rubber supplier and customized pantone code is available, hardness from 30 to 90 Shore A.

Size

Standard size with our current mold or customized according to your sample or drawing( 2D, 3D drawing , format STP, DWG, PDF , etc)

Quality and Certificate

We execute ISO9001 quality system and our Valve Rubber Diaphragm has passed ROHS/Reach/WARS certificate.

Mold and tooling

In house tool making and free of tooling charge for standard rubber diaphragm, the mould parting line will be sent to customer confirmation.

Management and quality tracking: Strict material traceability under ERP system.

Valve Rubber Diaphragm process flow

PO confirm---Develop mold according to drawing or sample---Develop chemical formula according to specifications---Mix the raw material as per formula---Prepare and Install the mold on the machine---Preform the rubber compound---Put the compound into mold and vulcanization with certain temperature and pressure---After a while, remove the goods from the mold---Trimming the flash---Inspection---Packing---Shipping

Small MOQ:Have variety Valve Rubber Diaphragm in stock, so mini MOQ is acceptable.

Function: seal valve equipment

Payment: T/T, L/C, Credit card. USD, RMB ,Euro and so on other currency is available.

Trade Term: EXW, FOB, CIF etc

Package: poly bag and carton(40*32*25CM). If you need pack by pallet or other customized package, it’s also ok.

Shipping method: By air, by sea, by express, multi-modal transport

FAQ: The cause of burning of rubber compound and its improvement method

We know that peroxide sulfide is not easy to burn, and the burn time of peroxide is generally shorter than sulfur sulfide, but why is not easy to burn? The fundamental reason is that the process of peroxide sulfide is a half decay process, which must be above the activation or decomposition point to produce cross-linking, of course, some such as some with carboxyl peroxide sulfide speed is also very fast, because its decomposition point is very low, although this general decomposition activation point is also above 110 degrees, In other words, that is, temperature control in the process of operation under 110 degrees will not scorch, even a short period of time under the high temperature is not easy to coke burning, as long as the operation temperature is not too high and out of the rubber were heat is no problem as soon as possible, such as DCP, 2, 5 less double charred, and parked next higher ambient temperature in the process of not more than 45 degrees! So generally will not be affected by the length of parking time, I think this point most of our engineering technicians can be recognized.

But sulfur sulfide is not the same thing, sometimes the formula is designed to burn for a long time, but parked for a long time will still die, sometimes the formula is not long, but parked for a long time will not necessarily die, winter is not easy to die, summer is the most easy to die, this is why?

You can check the information of various promoters critical activation temperature generally above 110 degrees, if it's purely from the critical work resolving degree on the accelerator, then under 40 degrees below the temperature of the park should also won't scorch, but in fact is not so matter, because the rubber coke has done a chemical reaction in the process of a material, under the high operating temperature, By vulcanizing agent, active agent, promoter has a small amount of mutual activation, generated a small amount of vulcanization precursor complex, which is a kind of room temperature vulcanization agent still to more than 20 degrees can be vulcanized. Some of the methods described by KRMQ are actually to prevent or reduce the amount of complex formation. In fact, the choice of accelerant varieties is to choose the critical activation temperature of the accelerant, adjust the amount of surfactant, is to adjust the activation energy of the active agent, the process used water machine, ice water machine is to reduce the operation time of the complex.