Stainless steel metal seal bolted bonnet flange manual straight type globe valve is a kind of mandatory seal valve, which including five types: BS 1873 globe valve, cryogenic globe valve, DIN globe valve, sdnr globe valve, stainless steel globe valve. When the valve is closed, pressure must be applied to the valve flap to force the seal face to leak. When the handwheel rotates clockwise, the valve stem moves downward, and the valve flap descends to close the sealing surface, cutting the passage. When it is reversed, it is opened, and the valve stem refers to the highest point and the seal acts. Once in the open state, there is no longer contact between its seat and the disc sealing surface, so its sealing surface is less mechanically worn. When the medium enters the valve six from below the valve flap, the resistance that the operating force needs to overcome is the friction force of the valve stem and the packing and the thrust generated by the pressure of the medium, so the force of closing the valve is greater than the force of opening the valve.
Carbon Steel A216 WCB, WCC, Low Carbon Steel LCB, LCC, Alloy Steel A217 WC6, WC9, Stainless Steel A351 CF3, CF8, CF3M, CF8M, Duplex & Super Duplex Steel A890 GR. 4A, GR. 5A, Special Materials in Monel, Al. Bronze C95800, 95600 etc.
13%Cr, F11, F22, SS304, SS304L, SS316, SS316L and other specials
Bolted Cover, Outside Screw and York, Optional Non-rising Stem
Design & Manufacture
API 600, BS 1873, ASME B16.34 or DIN3202
Face to Face
ASME B16.5, ASME B16.47
ASME B16.5, ASME B16.47
Inspection & Testing
Class 150 to Class 2500
Flanged RF or RTJ, Butt-welded and Grooved
Handwheel, Gear Devices, Electric / Pneumatic or Hydraulic Actuators
Optional Bypass system
Live Loading Packing & O-ring Seal available upon request
Main Part & Materials
HNO3, CH3OOH etc.
The materials are carefully selected to meet the relevant domestic and foreign standards, with reasonable structure and beautiful appearance.
The valve disc and seat sealing surface are wear-resistant, high temperature resistant, corrosion resistant, scratch resistant and long service life.
The valve stem is tempered and surface nitrided for good corrosion resistance and scratch resistance.
There is no relative sliding between the valve flap and the sealing surface of the valve body when opening and closing, so the wear and the scratch are not serious, the sealing performance is good, and the service life is long.
The fluid resistance is large, because the medium passage in the valve body is tortuous, the fluid resistance is large, and the power consumption is large.
Test Pressure at Room Temperature(Mpa)
Upper Seal Test
Water,oil, steam,acid, alkali,salt,water,water corrosion resistance and low temperature medium
BS 1873 globe valve, cryogenic globe valve, DIN globe valve, sdnr globe valve, stainless steel globe valve can be applied to construction, electrical conduit, agricultural irrigation, industrial sewage and other projects using.