Multi Standard Concentric Butterfly Valve in Wafer Type

• Customization: Available
• Media: Industry
• Driving Mode: Manual
• Model NO.: BLYH-00
• Connection Form: Wafer
• Structure: Centre Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Soft Sealed
• Valve Body: Casting
• Standard: JIS Standard
• Application: Industrial Usage, Water Industrial Usage, Marine, Gas, Petroleum, Chemical Industry
• Port Size: DN40-600 or 1.5′-24′
• Transport Package: Wooden Case or as Per Clint; S Requirement
• Specification: CE, SGS
• Trademark: OEM
• Origin: Shandong, China
• Production Capacity: 20, 000 Sets/Month

Product Description

Multi Standard Concentric Butterfly Valve in Wafer Type 

1. Industrial Use

The butterfly valves are widely used in piping of chemical, food, medicine, paper making, water and electricity, shipbuilding, water supply and drainage, metallurgy and energy systems, and is available for regulating and closure devices in a variety of corrosive, non - corrosive gas, liquid, semi-liquid and solid powder pipelines and containers.  
 

1. Performance Specification                                            

Nominal Diameter (DN)		25(1")~600(24")	25(1")~600(24")	DN (inch)
Nominal Pressure (PN)		10	16	BAR
Test Pressure	Body	15	24
	Sealing	11	17.6
Working temperatureºC		-15ºC~+150ºC
Applicable Mediums		Fresh water, sewage, sea water, air, steam, food, drug, various oil, acid, alkali, salt, etc.

Note: Applicable temperature and mediums are depending on the materials of different valve seats, bodies, stems and discs, see table 1 and table 2:    
                         
Regular Material of the Main Parts (Table 1)

Body		Disc		Stem
Name	Code	Name	Code	Name	Code
Cast Iron	GG25	Electric-plated DI	GGG40+Ni	Stainless Steel	416/316
Ductile   Iron(DI)	GGG40	AL-Bronze	C954/C958		431/17-4
AL-Bronze	C954/C958	Stainless Steel	CF8/CF8M
Stainless Steel	CF8/CF8M	Coating DI	GGG40+Nylon
Carbon Steel	WCB

                       
Properties of Valve Seat (Table 2)

Seat		Applicable TemperatureºC	Applicable Medium
Name
HYPALON		-15ºC~+120ºC	Water, some kind of oil and moderate chemicals, ozone, fat, animal fat, several of solvents, high and low pressure steam are forbidden.
EPR		-15ºC~+121ºC	Ozone, strong and chemical oxidation, several of solvents, alcohol, acid and alkali, low pressure steam, air, water, heavy water, sewage, hot and cold water.
CR		-15ºC~+99ºC	Air, water, heavy water, oil, moderate chemicals, acids, ozone, fat, animal fat, several of solvents.
NBR		-15ºC~+82ºC	Water, sea water, air, gases, chemicals, alcohol, the non aromatic agent, kerosene, animal and plant oil, light grinding medium, shall not apply to phosphate series oil and extreme pressure additive oil.
DRC		-10ºC~+50ºC	Mainly suitable for semiliquid and solid powder medium, such as mud, coal slurry, cement powder, coal powder and other powder materials.
VITON		-15ºC~+135ºC	Water, sea water, sewage, alcohol, paraffin wax, oxygen, air, etc. High Chemical resistance, especially suitable for aliphatic fragrances in high temperature environment, and animal & plant oil with halogenated hydrocarbon acid. High and low pressure steam is forbidden.
EPDM	X9	-15ºC~+150ºC	Mainly applicable to the low pressure steam with high temperature, hot & cold water and heat pipes for disposable water treatment.
PTFE		-18ºC~+200ºC	Mainly applicable to strong acid, strong alkali and other corrosive medium.

1.  Cv Values

Cv values-Valve Sizing Co-efficiency (US-GPM @1ΔP)

Size	10°	20°	30°	40°	50°	60°	70°	80°	90°
2"	0.06	3	7	15	27	44	70	105	115
2.5"	0.10	6	12	25	45	75	119	178	196
3"	0.20	9	18	39	70	116	183	275	302
4"	0.30	17	36	78	139	230	364	546	600
5"	0.50	29	61	133	237	392	620	930	1022
6"	0.80	45	95	205	366	605	958	1437	1579
8"	2	89	188	408	727	1202	1903	2854	3136
10"	3	151	320	694	1237	2049	3240	4859	5430
12"	4	234	495	1072	1911	3162	5005	7507	8250
14"	6	338	715	1549	2761	4568	7230	10844	11917
16"	8	464	983	2130	3797	6282	9942	14913	16388
18"	11	615	1302	2822	5028	8320	13168	19752	21705
20"	14	791	1647	3628	6465	10698	16931	25396	27908
24"	22	1222	2587	5605	9989	16528	26157	39236	43116