F91 Trap Ball Valve Stainless Steel Cast Steel

• Customized: Customized
• Certification: ISO, API, CE
• Power: Pneumatic
• Pressure: Medium Pressure
• Brand: Xuan Cheng
• Work Temperature: Normal Temperature
• Model NO.: F91
• Material: Carbon Steel
• Medium: Water, Steam, Gas, etc
• Structure: Through
• Connection Mode: Flange
• Seal: Hard Seal
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: xc
• Origin: China
• HS Code: 8412310090
• Production Capacity: 10000

Product Description

F91 trap ball valve: also known as ultra-supercritical trap ball valve, the main material F91 alloy steel high temperature resistance ≤670ºC, the internal material Inconickel 718+CrC, integrated structure without connection leakage point, connection BW/SW, drive mode: Manual/pneumatic/electric, etc., supporting the use of boiler plant, turbine plant, auxiliary plant, etc., but also in the major power, chemical, steel industry at home and abroad to obtain excellent performance.
Structural principle:
The valve body is divided into three parts along the section perpendicular to the axis of the valve channel in the two seat parts. The whole valve is symmetrical along the central axis of the valve stem. It is mainly used in the pipeline to cut off, distribute and change the direction of the flow of the medium. Its large pivot structure ensures the accurate center position of the ball under high pressure to ensure the good operating performance of the valve; The standard valve seat adopts spring structure to push the valve seat to the ball to ensure good import and export two-way sealing performance; The use of its own discharge valve, the body cavity can be discharged outward; The pivot adopts explosion-proof protection structure to effectively prevent leakage; Low friction coefficient of the bearing, so that the torque is reduced to the smallest, easy to open and close the valve; The effective contact between the valve stem and the valve body makes the anti-static grounding device superior in performance. It has the advantages of excellent performance, high reliability, wide use and reasonable price.
Structural features:
Split or single forged valve body floating
 ball design
 special hard surface spraying process
 FCI-70-2 VI tight truncation
 valve stem double anti-channel and double guide to the design
 of live load packing compression structure, compensation packing bolt high temperature creep and packing wear
 ISO5211 plate
Connecting end:
Flange, thread, butt weld, socket weld, clamp
Main applications:
Thermal power plant boiler system, steam turbine system, condensation system, steam supply extraction system isolation, drainage, exhaust steam, overpressure protection (emergency pressure relief)
Material of main parts:

Serial number	Part name	ASTM A105 Series	ASTM A182 F22 Series	ASTM A182 F91/F92 Series
1	Valve body	ASTM A105	ASTM A182 F22	ASTM A182 F91/F92
2	Valve seat	410 Spray chrome carbide	Inconel 718+CrC
3	Sphere	410 Spray chrome carbide	Inconel 718+CrC
4	Pre-tighten seat	ASTM A105 nitriding	ASTM A182 F22 Nitriding	ASTM A182 F91/F92 Nitriding
5	Butterfly spring	Inconel X 750
6	Seat support ring	ASTM A105 nitriding	ASTM A182 F22 Nitriding	ASTM A182 F91/F92 Nitriding
7	circlip	Inconel X 750
8	Take over	20 #	12Cr1MoV	P91/P92
9	Stuffing	Inconel 718 wire + Expanded graphite for high temperature
10	Bolts	ASTM A193 B7	ASTM A193 B16	ASTM A193 B8M
11	Stuffing gland	ASTM A105 nitriding	ASTM A182 F22 Nitriding	ASTM A182 F91/F92 Nitriding
12	Butterfly spring	Inconel X 750
13	Nuts	ASTM A194 2H	ASTM A194 7	ASTM A194 BM
14	Stem	Inconel 718 nitride
15	Thrust bearings	Inconel 718 nitride
16	Connecting shaft	ASTM A276 410 Nitriding
17	support	Q235
18	Pneumatic actuators	Components
19	Hex socket screws	ASTM A193 B7