A351-CF8M Flexible Wedge Gate Valve with RF B16.47A 30' Class 300
| Body | ASTM A216 WCB,ASTM A351 CF8,ASTM A351 CF8M |
| Gasket | Soft Iron +Graphite or 304 + Graphite |
| Seat ring | A105 + 13Cr,A105+STL,ASTM A351+ CF8, |
| Gate | ASTM A216WCB + 13Cr,ASTM A216WCB +STL,ASTM A351 |
| Stem | ASTM A182 6a,ASTM A182F 304,ASTM A182F 316 |
| Packing | Graphite |
| Gland | ASTM A182F 6a,STM A182F 304,ASTM A182F 316 |
| Eyebolt nut | ASTM A194 2H,ASTM A1948 |
| Eyebolt pin | ASTM A 36,304SS |
| Bonnet Bot | ASTM A193 B7,ASTM A193 B8,ASTM A193 B8M |
| Bonnet nut | STM A194 2H,ASTM A1948 |
| Bonnet | ASTM A216WCB,ASTM A351 CF8M |
Body and Bonnet Connection
the body and bonnet of class 150-class 900 gate valves are usually connected with studs and nuts.And the body and bonnet of class 1500-class 2500 gate valves are usually of pressurized seal design.
Seat
the stem is of intergral forded design.The seat is usually forged steeel.The sealing surface of the seat is spray welded with hard alloy specified by the customer.Renewable thereaded seat is used for NPS ≤10 gate valves,and welded on seat can be also optional if being requested by the cstomer.Welded on seat is used for NPS≤10 carbon steel gate valves.For stainless steel gate valve,intergral seat is usually adopted ,or to weld hard alloy directly integrally.Threated or welded on seat is also optional for stainless steel gate valve is being requested by the customer.
Quality assurance system
1.Sclerometer
2.Universeal material testing machine
3.High speed analyzer
4.Chemical test
5.Electric analysis scales
6.Nde mt (magnetic powder) inspection
NDE UT (ultasonic) inspection
NDE PT (penetrate) inspecion
PMI spectrum analysis
Hydraulic pressure test
Cryogenic ball valve test
Fire-safe test
Certification
API-6D
API-Q1
API2014
ISO 9001-2008
ISO-TS-29001
CE-PED
API 607 Fire safe certificate
API 6FA Fire safe certificate
China national petroleum corporation approved vendor
Shanghai high enterprise certificate
Gate valve series
Ball valve series
Globe valve series
Check valve series
Butterfly valve series
Other valve series
Our major products
Exporting is the dominant operation at Kaitai.In the process of KATA brand promotion and building up our distribution channels over the years and now has many satisfied and loyal customers.KATA is well recognized and its products are widely used in the oil and gas industry,power plant,boiler,metallurgy,pressure vessel,water supply and drainage and etc.
