Standard and specification
1.Design and manufacture:API594,API 6D,JB/TB8937;
2.Face to face and end to end:API594,API6D,DIN3202,JB/T8937;
3.Pressure-temperature rating:ASME B16.34,DIN2410,GB/T9124,HG20625,SH3406,JB/T74;
4.Inspection and test: API598,JB/T9092;
5.Pipe flange: JB/T74~90,JB/T9112-9124,HG20592~20635,SH3406,ASME B16.5,DIN2543~2548,GB/T13402,API605,ASME B16.47.
Structural Feature
1.Short structural length,only 1/4~1/8 of that of traditional flanged check valve;
2.Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve;
3.Quick valve disc closedown,low water hammer pressure;
4.Applicable for and easily installed for vertical or horizontal pipelines;
5.Smooth flow passageway and small fluid resistance;
6.Flexible action and good sealing performance;
7.Narrow valve travel and small closedown impact;
8.Integrated structure,simple and compact,in beautiful shape;
9.Long service life and good reliability.
Specifications |
| Applicable Standards |
|
| Design | ASME B16.34, API6D |
| Fire safe | API 607 |
| Anti static | API 608, API6D |
| Face to face | ASME B16.10, API6D |
| Welding ends | ASME B16.25 |
| Inspection and test | API 598, API 6D |
Zhejiang NaiBang Valve Co., Ltd. is a specialized company devoted into manufacture and sales of valves, the company situates in ou-bei town-the center of China's pumps & valves, with ground area 18800m2, machine workshop, assemble workshop and synthetic finished half - finished warehouse. The company possesses 210 precise equipments, the advanced numeral control machines ensure the flexibility and exchangeability of all the product parts. The company flourishes year by year, and its products have been widely used in lines of domestic large PowerStation configuration, dirty water processing, urban construction, petroleum-chemical, oil extraction, metallurgy, chemical fertilizer, paper production and pharmacy, exported to many countries and regions, gains the users' unanimous praise and confidence.
The company has a modernized staffs of tech research and product development, ISO9001 certificated. And now the company has the capability of manufacturing big series of high temperature and hi-gh pressure power station gate valve, ball valve, globe valve, check valve, butterfly valve, with the strength of API valve, Wafer check valve and forged valve, and the wafer check valve mainly cover wafer single disc lift and swing check valves and wafer double disc swing check valves (H77, H76, H74, H72, H71, H46 and H44). Diameter of valves varies from DN15 to DN2000(1/2'-72' ), working pressure varies from PN1.6MPa to 42 MPa(150lb to 2500lb), and working temperature from -196 Celsius degree to +570 Celsius degree; The main body adopts WCB, WC6, WC9, Cr5Mo, 20Crmo, 12Crmov, 15Crmov, CF3m, CF8m. The company possesses full precise casting equipments, integrated physical and chemical gauges, experimentation equipments and test methods, as well CAD design capability, which ensure products always in high quality.
