API603 detection
Tianjin Rong Da Testing Co., Ltd. contact: Wang Jingfu
Cell phone: 13102238283 QQ:3144667033
Telephone: 022-23892103
API603 is one of the valve design standards for the valve!
The characteristics and advantages of the API603 American Standard gate
1, the valve pressure parts using precision casting process casting, surface quality of the hand wheel using malleable cast iron casting, modeling with the handle, the appropriate increase in friction, easy to open. And shows that there is a clear "open", "off" sign.
2, the stem nut using high nickel ductile iron, "T" - shaped thread and stem with the transfer torque.
3, the valve cover is provided with an oil cup, can be regularly added solid lubricants, maintain easily open and close.
4, the packing gland and pressing sleeve body design, ensure the concentricity of the stem. Reasonable packing design, to ensure that the valve does not leak, in line with environmental protection requirements.
5, the valve cover is provided with an upper sealing ring, in line with the API standard of the American Petroleum institute.
6, the valve in the flange connection bolt with double headed bolt, convenient maintenance, disassembly.
7, the stem head of the whole forging, and the valve flap through the "T" type slot connection, to ensure strength.
8, DN250 the following castings for precision casting, each batch of castings have furnace number identification, easy to track. Easy torque transfer structure of the hand wheel nut will be transferred to the stem, the stem using A182F6 (1Cr13) forging and quenching and tempering treatment, hardness HB220 ~ 250. In order to reduce the loss of power in the transmission process, the stem nut selection of high nickel ductile iron A439GR.D2 or copper alloy (high nickel ductile iron with a certain self lubrication), the hardness is smaller than the stem HB50. Large diameter and high pressure valve in the valve stem nut, and thrust bearing with oil cup structure, regularly adding solid grease, so that the valve is to maintain lubrication, with lighter torque