First, Pneumatic Clamp Type Hard Seal Butterfly Valve Products Overview
The J shaped elastic precision of the sealing ring and the three eccentric multi-level metal seal structure, is widely used in medium temperature ≤425℃, petroleum chemical industry, metallurgy, electric power and water supply and drainage and municipal construction and other industrial pipelines, adjust the flux and set off fluid. The three eccentric valve structure, valve seat and disc sealing surface are made of stainless steel with different hardness, good corrosion resistance, long service life, the valve has a two-way sealing function, the product conforms to the national standard GB/T13927-92 valve pressure test.

Two, Pneumatic Clamp Type Hard Seal Butterfly Valve Features
1, The valve uses three eccentric sealing structure, seat and butterfly plate almost no wear, with the more closely the sealing function.
2, Sealing ring made of stainless steel, with metal hard sealing and elastic sealing dual advantages, both in low temperature and high temperature conditions, have excellent sealing performance, corrosion resistance, long service life and so on.
3, The sealing surface of the butterfly plate is welded with cobalt based hard alloy. The sealing face is wear resistant and has long service life
4, Large formatdiscusinglatticestructure, high strength, large flow area, flow resistance is small.
5, The valve has two-way sealing function, installation is not affected by the media flow direction, and is not affected by the location of the space, can be installed in any direction.
6, The drive device can be multi station (rotation) 90° or 180°Installation is convenient for users.

Three, Pneumatic Clamp Type Hard Seal Butterfly Valve Principle
The pneumatic actuator is controlled by the electromagnetic reversing valve, so that the valve stem rotates 90 degrees to achieve the purpose of switching.
The cylinder adopts 1/4 rotary cylinder with adjustable angle1°～5°.

Four, Main Technical Parameters and Standards

Technical Specifications
Design Basis		GB Standard	ANSI Standard
Design Standard		GB/12238	API609
Structural Length	Clip Chaining	GB12221	ANSI B16.10 ANSI B16.5(2-24")
Connecting Flange Dimension		GB/9113、JB/T79	ANSI B16.47(26-32")
Experiment and Test		JB/T9092	API598

Remarks: the length and size of the series ball valve can be designed and manufactured according to the customer's requirements

Technical Parameter
Nominal Diameter	DN50~800mm
Connection Mode	Clip Type
Cylinder Matching	AT Series, GT Series, AW Series, Imported Actuator Series
Cylinder Form	Double Action, Single Action (spring reset)
Control Mode	Switch Type, Adjust Type, Three Section Type (opening degree optional)
Nominal Pressure	16、25、40bar(if higher pressure is required, please specify)
Gas Pressure	Double Acting: 4~8bar, Single Action: 5~8bar
Medium Temperature	W1:-40~180℃、W3：-30~425℃、W4：-40~425℃
Ambient Temperature	Standard Type:-20~80℃
Body Material	Carbon Steel (C), Stainless Steel (P4, P6)
Sealing Material	Polytetrafluoroethylene (F), Metal Hard Sealing (H) and Hard Alloy (Y)

Remarks: other special sealing materials or special temperature can be designed and selected according to customer requirements

Accessories Selection
Solenoid Valve	Double action select two bit five pass, single action two bit five pass, single electronic control double electric control order
Gas Source Treatment Triple Parts	The gas source is regulated, filtered and lubricated by the cylinder
Limit Switch	Remote feedback switching signal
Hand Operating Mechanism	The valve can be manually opened and closed
Positioner	Enter analog signal (4-20mA or 0-10V) to adjust valve opening
Remarks	The above accessories are not standard accessories, if need to be configured when ordering, the solenoid valve and limit switch are divided into explosion-proof and non explosion, if need to be explosion-proof, but also indicate the explosion-proof level

Five, Pneumatic Pairs Of Clip Type Hard Seal Butterfly Valve Main Parts Materials

Material List Of Main Parts
NO.	Name	Material			NO.	Name	Material
		C	P4	P6			C	P4	P6
1	Inside six corners screw	1Gr18Ni9Ti	1Gr18Ni9Ti	1Cr18Ni12Mo2Ti	11	Valve body	WCB	ZG1Cr18Ni12Mo2Ti	ZG1Cr18Ni12Mo2Ti
2	Valve cover	WCB	1Gr18Ni9Ti	ZG1Cr18Ni12Mo2Ti	12	The stem	1Cr13	1Gr18Ni9Ti	1Cr18Ni12Mo2Ti
3	Shim	1Gr18Ni9Ti	1Gr18Ni9Ti	1Cr18Ni12Mo2Ti	13	Connecting Bracket	WCB	WCB	WCB
4	Valve Seat	PTFE.Stainless Steel + Flexible Graphite			14	Key	45	45	45
5	Shim	1Gr18Ni9Ti	1Gr18Ni9Ti	1Cr18Ni12Mo2Ti	15	Bushing	PTFE.Compound Bearing
6	Disc	WCB	ZG1Cr18Ni12Mo2Ti	ZG1Cr18Ni12Mo2Ti	16	Filler	PTFE.Flexible Graphite
7	Cylindrical Pin	45	1Gr18Ni9Ti	1Cr18Ni12Mo2Ti	17	Gland	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
8	Under Cover	WCB	ZG1Cr18Ni12Mo2Ti	ZG1Cr18Ni12Mo2Ti	18	Pneumatic Device	Extruded Aluminum Alloy
9	Shim	PTFE.Stainless Steel + Flexible Graphite			19	Position Indicator	Plastic
10	Bushing	PTFE.Compound Bearing

Note: other parts and sealing ring material can also be designed according to actual conditions or customer requirements

Six, Main Dimensions Of Pneumatic Clamping Butterfly Valve With Hard Seal

Main Dimensions-PN16（16bar）
Nominal Diameter[DN]	Outline Size				Connection Size		Actuator Type
	L	L1	L2	H	D	N-D
50	43	159/211	83/95	277/205	125	4-18	ATD63/ATE75
65	46	211/248	95/107	287/315	145	4-18	ATD75/ATE88
80	46	248/269	107/123	365/375	160	8-18	ATD88/ATE100
100	52	269/315	123/141	420/436	180	8-18	ATD100/ATE115
125	56	315/345	141/152	436/462	210	8-18	ATD115/ATE125
150	56	345/409	152/172	466/543	240	8-22	ATD125/ATE145
200	60	409/438	172/187	593/665	295	12-22	ATD145/ATE160
250	68	436/559	187/215	682/752	355	12-26	ATD160/ATE190
300	78	550/600	215/240	725/772	410	12-26	ATD190/ATE210
350	78	600/633	240/262	832/880	470	16-26	ATD210/ATE240
400	102	633/730	262/330	862/968	525	16-30	ATD240/ATE270
450	114	633	262	945/1005	585	20-30	ATD240/ATE25
500	127	730	300	1058/1060	650	20-33	ATD270/ATE25
600	154	1320/1970	440/480	1108/1195	770	20-36	ATD25/ATE28
700	165	1430/2700	480/560	1170/1255	840	24-36	ATD28/ATE35
800	190	1430/2700	480/560	1325/1365	950	24-39	ATD25/ATE35

Note: according to different valve torque, different gas pressure and different actual conditions, choose the matching actuator, its related shape and size also change