To the above valve material strict according to GB/T12224 steel valves common requirements and related valve material standards selection, and security use fixed number of year of survival. — Shell try on tightly closed, try out, low voltage tightly closed, high pressure water tightly closed to try, try other code. The valve is widely used in petrochemical, electric power, smelting metal, urban construction, chemical industry, etc. For steel in accordance with the requirements of standard heat treatment, mechanical performance standard requirements. Because the casting between the valve disc to open and close stroke is small, tightly closed surface can undertake repeatedly opening and closing again, because of this, by the end of Industrial Valves is suitable for use in demand more switch Settings, can be used to most media flow in the system. 4, the high pressure casting by the valve material: 4. 1 valve body, valve cover, material for WCB, WC6, LCC, OCr18Ni9 or OCr17Ni12Mo2. Q: high pressure casting by the unique place, the material, the check valve structure experience and drive a: 1, the performance of the high pressure casting of valve: because of the high pressure casting of valve seat channel change is relation with directly proportional valve stroke. 4. 2 stem material for 13 cr, 304 or 316. ( 3) The valve stem, the heat treated with satisfactory scratch resistance and abrasion resistance. Tightly closed reliable, high hardness; Wear-resistant high temperature resistance, abrasion resistance performance is good, the survival of the fixed number of year long. Casting material is accord with GB/T12229 'general valve quality carbon steel casting technical conditions', GB/T12230 general stainless steel valve casting technical conditions and JB/T7248 'valve with low temperature steel casting technology conditions' the standard stipulated in the request. 6, high pressure of valve actuator: 6. 1 according to the operating conditions by the valve, the valve operating mechanism will have enough torque and stiffness. For PN160 and valve pressure buoyancy hierarchies according to JB/T6440 sexual intercourse, ray inspection experience. 5. 5 products using unit shall have the right at any time according to the demand of seizing. For pressure steel without testing, standards for JB/T6440 valve compression casting steel radiographic investigation. 5, the high pressure casting by valve inspection experience and test of 5. 1 test standard valve check experience and try to execute JB/T 9092 and GB/Marine valve T12224 standards. 3, the high pressure casting material selection of the valve tightly closed: carbon steel by the valve: the valve disc 13 cr and seat for WCB + HF, WC6 + HF or LCC + HF, the poor hardness HB 50 or more. Requirements drive for the structure the valve stroke operation safe and secure, and no jamming, no beat phenomenon, debugging precision is high, the action is correct. Full report presentation documents keep on record, so that the valve produces in the process of acceptance of buyer's investigation. 6. 2 operators shell bearings and device requirements of a petition to the valve body has enough stiffness and strength. 5. 2 valve factory try to step forward in 100 one hundred percent of pressure, the valve pressure testing at least cover the following internal substance. 304 or 316 stainless steel by the valve: disc and seat OCr18Ni9 + HF or OCr17Ni12Mo2 + HF, the poor hardness HB 50 or more. 。 Casing pressure trying to step forward for valve appearance treatment and spray paint. ( 2) Disc and seat tightly closed surface sees fit and using different hardness of hard alloy spray welding and into. Stem material in accordance with the relevant valves standard of chemical analysis, mechanical performance report statements ( Stretching try, try hardness) , heat treatment, according to the requirement and supply phase and report stated. 6. 3 the maximum utility of artificial operating mechanism handwheel strength of 35 KGF ( No matter what condition) 。 High voltage by the valve stem to open or close a relatively short, and have very good truncation function, and because the seat channel and the change of disc stroke proportional relationship and is very suitable for the traffic regulation. Full report presentation documents keep on record, so that the valve produces in the process of acceptance of buyer's investigation. Disc and seat tightly closed higher surface hardness have satisfactory erosion resistance, corrosion resistance, spray welding process, the strict execution by spray welding procedures. 5. 4 all butt weld 100 one hundred percent of X-ray radiographic inspection experience. 5. 3 after the test, attempt to row of net body medium. The spray welding process, the strict execution by spray welding procedures. 2, the high pressure casting by the valve structure of the unique place: ( 1) Countersigned countersigned national standard flange, socket welding, butt welding, petition, turnbuckle signatures as of valve series is a product of reference gb default rules, cast steel preset by the valve series product structure is reasonable, reliable performance, reliable quality, convenient installation and flexible operation of the light and other unique places. ( 4) May think fit and use a variety of petition forms, satisfied with all kinds of piping and piping flange standard and way of flange sealing surface closely, satisfied with all kinds of engineering requirements and user requirements. Because of this, such as valve type Industrial Valves is used to as a truncated or adjust and throttling. All pressure forging JB4726-4728 'pressure vessel steel forgings' regulation requirements.
Whenever you grab your remote and turn on the TV, there are numerous ads promoting resilient wedge gate valve and offering for os & y valve fire protection extracts, which are said to boost cast iron valve.
Visit Shenzhen Mech Valve Trading Co., Ltd. in China for professional wedge gate valve tips and qulity ensured . The company is a licensed, bonded, and insured provider with decades of experience. Make your enquiry, today.
The proprietor has many years experience in providing promotion services and is a sought after expert in rising stem gate valve.
ductile iron gate valve are less complex compared with resilient gate valve.