valve model Archives

In the previous article, we have introduced the establishment of code number of the valve model in China. However, there are more and more types of valves and materials, and the compilation of valve models is becoming more and

U-type flange butterfly valve, ductile iron, DI, center line,

more complicated. Although China has a unified standard for valve model formulation, it is gradually unable to meet the needs of the development of the valve industry. At present, valve manufacturers generally adopt a unified numbering method; each manufacturer that cannot use a unified numbering method can develop its own numbering method according to its own situation.
Here we mainly introduce the method of Chinese valve numbering, and we will give examples.
For example, the Z543H-16C bevel gear drive, flange connection, flat gate valve, nominal pressure 1.6MPA, valve body material is carbon steel.
Please refer to the previous article for the specific number code: Valve model establishment and meaning

Unit One , valve type (code name):

butterfly valve	safety valve	Diaph-ragm valve	ball valve	gate valve	check valve	plug valve	Pressure reducing valve	globe valve	filter	Disch-arge valve
D	A	G	Q	Z	H	X	Y	J	GL	FL

Unit two, valve drive mode (code name):

drive mode	Electro-magne-tism	Electro-magnetic hydraulic	Electro-hydraulic	tur-bine	Spur gear	Bevel gear	pneu-matic	Hydr-aulic	Gas-hydr-aulic	elec-tric	han-dle	Hand-wheel
code	0	1	2	3	4	5	6	7	8	9

Unit three, valve connection method (code name):

connection	internal thread	external thread	two different connections	flange	welding	wafer	clamp	ferrule
code	1	2	3	4	6	7	8	9

Unit Four, valve structure (code name):

Butterfly valve structure (code name):

butterfly structure		butterfly code	butterfly structure		butterfly code
sealed	singl eccentric	0	unsealed	single eccentric	5
	center vertical plate	1		center vertical plate	6
	double eccentric	2		double eccentric	7
	triple eccentric	3		triple eccentric	8
	linkage mechanism	4		linkage mechanism	9

Another example: D341X-16Q: Double flange butterfly valve, worm gear, soft centerline seal, nominal pressure 1.6Mpa, valve body material is ductile iron
Another example: D371X-10C: Wafer butterfly valve, turbo drive, soft centerline seal, nominal pressure 1.0MPA, and the valve body material is cast steel.
The valve number has 7 digits, and each position has a different code, so there are many changes in the valve, and the price will not be too uniform. And these 7 codes can’t represent the details of all materials. In addition to these 7 codes, there are many components that will greatly affect the use of the valve and the cost and price of the valve, such as the material of the valve plate, the material of the valve shaft, and the length of the valve structure.
Therefore, in the valve industry, there are many special products that need to be customized, and individual inquiries need to be checked separately, and special circumstances require special treatment.

TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil, Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D

The latest valve model compilation method
Nowadays, there are more and more types of valves and materials, and the compilation of valve models is becoming

ductile iron, DI, butterfly valve, manufacturer, center line, TH valve

more and more complicated. The standardization of valve models provides convenience for valve design and selection. Although my country has a unified standard for valve model compilation, it is gradually unable to meet the needs of the development of the valve industry. At present, valve manufacturers generally adopt a unified numbering method; if a unified numbering method cannot be used, each manufacturer can work out a numbering method according to its own situation.
The valve model compilation method specifies the valve model description, valve type, drive mode, connection form, structure form, sealing surface material, pressure and the expression method of the valve body material code. The valve model preparation method is suitable for all kinds of pipeline valves such as gate valves, globe valves, throttle valves, butterfly valves, ball valves, diaphragm valves, plug valves, check valves, drain valves, plunger valves, pressure reducing valves, traps, and safety valves. product. Standard valve model representation method The valve model compilation method should usually indicate the valve type, drive mode, connection form, structural characteristics, nominal pressure, sealing surface material, valve body material and other elements.
Unit One , valve type (code name):

butterfly valve	safety valve	Diaph-ragm valve	ball valve	gate valve	check valve	plug valve	Pressure reducing valve	globe valve	filter	Disch-arge valve
D	A	G	Q	Z	H	X	Y	J	GL	FL

Unit two, valve drive mode (code name):

drive mode	Electro-magne-tism	Electro-magnetic hydraulic	Electro-hydraulic	tur-bine	Spur gear	Bevel gear	pneu-matic	Hydr-aulic	Gas-hydr-aulic	elec-tric	han-dle	Hand-wheel
code	0	1	2	3	4	5	6	7	8	9

Unit three, valve connection method (code name):

connection	internal thread	external thread	two different connections	flange	welding	wafer	clamp	ferrule
code	1	2	3	4	6	7	8	9

Unit Four, valve structure (code name):

Butterfly valve structure (code name):

butterfly structure		butterfly code	butterfly structure		butterfly code
sealed	singl eccentric	0	unsealed	single eccentric	5
	center vertical plate	1		center vertical plate	6
	double eccentric	2		double eccentric	7
	triple eccentric	3		triple eccentric	8
	linkage mechanism	4		linkage mechanism	9

Gate valve structure (code name):

gate valve structure types				gate valve code
valve stem lift type	Wedge gate plate	Flexible gate plate		0
		rigid gate plate	single gate	1
			double gates	2
	Parallel gate plate		single gate	3
			double gates	4
non-lifting valve stem	Wedge gate plate		single gate	5
			double gates	6
	Parallel gate plate		single gate	7
			double gates	8

Ball valve structure (code name):

ball valve structure		code	ball valve structure		code
floating ball	Straight flow channel	1	fixed ball	Straight flow channel	7
	Y type three-way channel	2		four-way channel	6
	L type three-way channel	4		T type three-way channel	8
	Y type three-way channel	5		L type three-way channel	9
				Hemisphere through	0

Check valve structure (code name):

check valve structure		code	check valve structure		code
lifting disc	straight flow channel	1	swing disc	single disc	4
	vertical structure	2		multiple discs	5
	angle channel	3		double disc	6
			butterfly type check valve		7

The structure of stop valve, throttle valve and plunger valve (code name):

globe valve structure		code	globe valve structure		code
disc type unbalanced	straight flow channel	1	disc type balanced	straight flow channel	6
	Z channel	2		angle channel	7
	three-way channel	3
	angle channel	4
	DC runner	5

Diaphragm valve structure (code name):

diaphragm valve structure	code	diaphragm valve structure	code
Roof circulation	1	straight flow channel	6
DC runner	5	Y type angle channel	8

Plug valve structure (code name):

plug valve structure			plug valve structure
packing seal	straight flow channel	3	oil seal	straight flow channel	7
	T type three-way channel	4		T type three-way channel	8
	four-way channel	5

Safety valve structure (code name):

safety valve structure		code	safety valve structure		code
Spring loaded spring seal structure	full open type with heat sink	0	spring loaded,spring not close, with wrench	micro-open, double valve	3
	micro-open	1		micro-open	7
	full open	2		full open	8
	full open with wrench	4
leverage	single leverage	2	with actuator full open		6
leverage	double leverage	4	pulse		9

Structure of pressure reducing valve (code name):

pressure reducing valve structure	code	pressure reducing valve structure	code
film type	1	bellows type	4
spring film type	2	leverage type	5
piston type	3

The structure of the trap (code name):

trap	trap code	trap	trap code
float ball type	1	steam pressure type or bellows	6
float bucket	3	bimetallic	7
liquid or solid expansion type	4	pulse	8
bell float	5	disc thermaldynamic	9

The structure of the blowdown valve (code name):

blowdown valve structure		code	blowdown valve structure		code
liquid level connection discharge	cut-off straight through	1	Discontinuous discharge	Cut-off type DC	5
	cut-off angle	2		Cut-off straight-through	6
				Cut-off angle	7
				Floating gate type straight-through	8

Unit five, valve sealing material (code name):

material	Babbitt alloy	enamel	Nitrided steel	18-8series stainless steel	Fluoroplastic	hard alloy
code	B	C	D	E	F	Y
material	nylon plastic	monel	lead lining	Mo2Ti stainless steel	plastic	monel alloy
code	N	P	Q	R	S	M
material	glass	copper alloy	Cr13 stainless steel	rubber	lining	valve material machined directly
code	G	T	H	X	J	W

Unit six, valve nominal pressure (code name): The valve nominal pressure value is directly expressed with Arabic numerals, which is 10 times of MPa. The pressure of 1.0MPA is DN=1.0MPA and the nominal pressure is 10kg. Indicates the nominal pressure of the valve!
Unit seven, valve body material (code name):

valve body material	Titanium and titanium alloys	carbon steel	Cr13 series stainless steel	Chrome-molybdenum steel	malleable cast iron	aluminum alloy
code	A	C	H	I	K	L
valve body material	ductile cast iron	Mo2Ti series stainless steel	plastic	copper and copper alloy	18-8series stainless steel	grey cast iron
code	Q	R	S	T	P	Z

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Valve model establishment and meaning (2)

Valve model establishment and meaning

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