product overview

The D363H/W series butt welded butterfly valve is based on advanced foreign technology introduced by our factory, using precision J-shaped elastic sealing rings and three eccentric multi-level metal hard sealing structures. It is widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction where the medium temperature is ≤ 425 ℃, for regulating flow and carrying fluids. The valve adopts a three eccentric structure, and the valve seat and disc sealing surface are made of different hardness and stainless steel, which has good corrosion resistance and long service life. This valve has a two-way sealing function and the product meets the national GB/T13927-92 valve pressure test standard.

Product Features

It has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance.
Compact structure, small size, light weight, flexible operation, and convenient use.
This valve has no flange, which brings great convenience and aesthetics to pipelines and insulation wrapping.
Adopting a three-dimensional eccentric elastic or multi-level hard sealing structure, its sealing performance is reliable and achieves zero leakage.
Adopting a welded structure to achieve permanent zero leakage between the valve and the pipeline plane.

Working principle

The welded butterfly valve has a simple structure, small volume, and light weight, and is composed of only a few parts. And it can be quickly opened and closed by simply rotating 90 °, with simple operation, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance for the medium to flow through the valve body. Therefore, the pressure drop generated by this valve is very small, and it has good flow control characteristics. Butterfly valves have two sealing types: elastic sealing and metal sealing. Elastic sealing valve, the sealing ring can be embedded on the valve body or attached around the butterfly plate.

Technical Parameter

Piping	nominal pressure	welding Groove according to	PRODUCT MODEL
GB/T 9112- 2000	1.0	GB/T 12224	D63H-1OC	D63W-10P	D63W-10P8	D63W-10P3	D63W-10R	D63W-10R8	D63W-10R3
	1.6		D63H-16C	D63W-16P	D63W-16P8	D63W-16P3	D63W-16R	D63W-16R8	D63W-16R3
	2.5		D63H-25	D63W-25P	D63W-25P8	D63W-25P3	D63W-25R	D63W-25R8	D63W-25R3
Material for main parts	valve body		WCB	ZG1Cr18 Ni9Ti	CF8	CF3	ZG1Cr18Ni 12M02Ti	CF8M	CF3M
	pressing ring		WCB	ZG1Ccr18 N19T1	304	3041	ZG1Cr18N1 12M02T1	316	3161
	Disc		WCB	ZG1Cr18 Ni9Ti	CF8(304)	CF3f30411	ZG1Cr18Ni 12M02Ti	CF8M(316)	CF3Mf31611
	valve stem		2Cr13	1Cr18N19T1	OCr19N19	OOCr19N111	1Cr18N1 12M02T1	OOCr17N14 M02	OOCr17N14 M02
	valve seat		1Cr18Ni9Ti	OCr19Ni9	OOCr19Ni11	OOCr19Ni11	OCt17Ni12 M02	OOCr17N14 M02	OOCr17N124 M02
Applicable working conditions	Applicable Medium		Water, steam, oil products, etc	Corrosive media such as nitric acid		Strong oxidizing medium	Corrosive media such as acetic acid		Corrosive media such as urea
BUTTERFLY VALVE			Inverted: D63H-16C
butterfly valves with gear actuator			Add "3" after valve type code D to indicate, for example: D363H-16C
pneumatic butterfly valve			Add "6" after valve type code D to indicate reverse: D663H-16C
electric butterfly valve			Add "9" after valve type code D to indicate, for example: D963H-16C

Main parameters

Nominal Diameter	DN(mm)	100~1400
nominal pressure	PN(MPa)	1.0	1.6	2.5	4.0
Test pressure Ps (MPa)	strength test	1.5	2.4	3.75	6.0
	Sealing test	1.1	1.76	2.75	4.4
	Airtight seal test	O．5～0.8 MPa
Applicable Medium	Water, oil products, steam, gas, acid, alkali, etc
Temperature	-196℃～≤600℃

Main component materials

name	material
valve body	Carbon steel, stainless steel, chromium molybdenum vanadium steel
Valve plate	Carbon steel, stainless steel, chromium molybdenum vanadium steel
valve stem	2Cr13 stainless steel, chromium molybdenum vanadium steel
sealing ring	Stainless steel, soft and hard laminated metal sheet
valve seat	Stainless steel, Duisi Taili and other hard alloys
filler	Flexible graphite

Note: When the working temperature is -196 ℃, a long neck structure is used, and H1 can be determined according to user needs, with a "D" added before the model.