Classification

National Standard Fixed Forged Steel Ball Valve

Key words:

Classification:

Cast steel valve series

Product Consulting:

400-6166669

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Description

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

Product adopts standards

Design Basis	Design Standards	Structural length	Connection flange	Welding end	Testing and Inspection
GB	GB/T 19672	GB/T 12221	GB/T 9113, JB/T 79	GB/T 12224	JB/T 9092
	GB/T 12237

Note: Flange connections and butt-welded ends of valves can be designed and manufactured according to customer requirements.

Material of Main Components

Serial number	Part Name	Materials	Serial number	Part Name	Materials
Serial number	Part Name	GB	Serial number	Part Name	GB
1	Spring	Inconel X-750	13	Sphere**	A105+HCr
2	Valve seat*	25	14	Sliding bearing	PTFE
3	Sealing ring	PTFE	15	Valve stem*	1Cr13
4	O-ring	NBR	16	Grease valve	Component
5	Screw	35CrMo	17	gasket	PTFE + stainless steel
6	gasket	PTFE, flexible graphite	18	Stuffing box	25
7	Lower valve stem*	1Cr13	19	Compression gland	25
8	gasket	PTFE, flexible graphite	20	O-ring	NBR
9	Bottom cover	25	21	Bracket	Q235A
10	Valve body	A105	22	key	45
11	gasket	PTFE, flexible graphite	23	Connection sleeve	45
12	O-ring	NBR	24	Drive unit	Component

Note: *For sulfur‑resistant valves, the material of this component is GB (1Cr18Ni9) and ASTM (A276-321).
**For sulfur‑resistant valves, the material of this component is GB (1Cr18Ni9+Ni.P) or ASTM (A182-304+Ni.P). The materials for the main valve components and sealing surfaces may be selected according to actual operating conditions or used…**
Designed and selected according to specific user requirements.

Main external connection dimensions
PN1.6 MPa

DN(mm)		50	80	100	150	200	250	300	350	400	450	500
L	RF	216	283	305	394	457	533	610	686	762	864	914
L	BW	216	283	305	457	521	559	635	762	838	914	991
H1		100	110	130	175	210	274	305	340	395	440	470
H2		165	90	200	270	300	380	420	450	530	560	605
W		400	700	850	600	600	600	800	800	800	800	800
E		-	-	-	116	116	116	171	171	257	257	257
F		-	-	-	350	350	350	420	420	500	500	500
WT(kg)		24	50	75	195	280	440	570	800	1480	2350	2400

Main external connection dimensions
PN2.5 MPa

DN(mm)		50	80	100	150	200	250	300	350	400	450	500
L	RF	216	283	305	403	502	568	648	762	838	914	991
L	BW	216	283	305	457	521	559	635	762	838	914	991
H1		100	110	130	175	210	274	305	340	395	440	470
H2		165	190	200	270	300	380	420	450	530	560	605
W		400	700	850	600	600	600	800	800	800	800	800
E		-	-	-	116	116	116	171	171	257	257	257
F		-	-	-	350	350	350	420	420	500	500	500
WT(kg)		30	58	95	210	318	440	575	800	1840	2700	2890

Main external connection dimensions
PN4.0 MPa

DN(mm)		50	80	100	150	200	250	300	350	400	450	500
L	RF	216	283	305	403	502	568	648	762	838	914	991
L	BW	216	283	305	457	521	559	635	762	838	914	991
H1		100	110	130	175	210	274	305	340	395	440	470
H2		165	190	200	270	300	380	420	450	530	560	605
W		400	700	850	600	600	600	800	800	800	800	800
E		-	-	-	116	116	116	171	171	257	257	257
F		-	-	-	350	350	350	420	420	500	500	500
WT(kg)		30	58	95	210	318	440	575	800	1840	2700	2890