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Pneumatic Hard-sealing Butterfly Valve

Hard-sealing butterfly valve

manufacturer and wholesaler. Our products are produced according to the ISO9001:2000 standards. There are more than 10 well educated and experienced technicians in our company to deal with OEM pneumatic hard-sealing butterfly valve services for our customers. Equipped with advanced facilities and high technology, now we are supplier of some famous enterprises such as the Parker Hannifin in the USA.

Pneumatic Hard-sealing Butterfly Valve

DN		L		D	D1	H	H1	H2	A	Z-d	Actuator
mm	inch	Short	Long	D	D1	H	H1	H2	A	Z-d	Actuator
50	2	108	150	165	125	112	0	134	196.5	4-18	RAT083DA
65	2¹/2	112	170	185	145	115	0	145	241	4-18	RAT092DA
80	3	114	180	200	160	120	0	158	263.5	8-18	RAT105DA
100	4	127	190	220	180	138	548	181	319	8-18	RAT125DA
125	5	140	200	250	210	164	605	198	390	8-18	RAT140DA
150	6	140	210	285	240	175	653	223	449	8-22	RAT160DA
200	8	152	230	340	295	200	772	223	449	8-22	RAT160DA
250	10	165	250	395	350	243	866	256	515	12-22	RAT190DA
300	12	178	270	445	400	250	964	281	560	12-22	RAT210DA
350	14	190	290	505	460	280	1068	281	560	16-22	RAT210DA
400	16	216	310	565	515	305	1108	281	560	16-26	RAT210DA
450	18	222	330	615	565	350	1177	306	654	20-26	RAT240DA
500	20	291	350	670	620	380	1289	346	725	20-26	RAT270DA
600	24	267	390	780	725	445	1439	374	745	20-30	RAT300DA
700	28	292	430	892	840	480	1494	374	745	24-30	RAT300DA
800	32	318	470	1015	950	530	1718	428	860	24-33	RAT350DA
900	36	330	510	1115	1050	580	1818	428	860	28-33	RAT350DA
1000	40	410	550	1230	1160	650	2041	506	918	28-36	RAT400DA
1200	48	470	630	1455	1380	760	1176	506	918	32-39	RAT400DA

• Characteristic

Because this butterfly valve adopt three-dimensional eccentric to design, make the movement track on facing space reach to idealization, and there are no attrition and on intervene between hermetical components, furthermore, the hermetical material has been selected reasonably, there by it ensure hermetic, 10 antisepsis, wearable capability of valve. The main characteristic as below:
1. Tiny moment for starting, flexible and convenient, save labor and energy.
2. Three-dimensional eccentric configuration forces disc close tighter, and reach to reliable hermetic capability and with no
leakage.
3. High temperature resistant, high pressure resistant, long service life etc.

Pneumatic Hard-sealing Butterfly Valve

• Main technology parameter

Nominal diameter	DN（mm）	50~200				50~500
Nominal pressure	PN（MPa）	0.6	1	1.6	2.5	4
PS(MPa) Test Pressure	Shell test	0.9	1.5	2.4	3.75	6
	Seal test	0.66	1.1	1.76	2.75	4.4
	Gas seal test	0.6	0.6	0.6	0.6	0.6
Leakage	<0.1xDNmm3/s（GB/T13927-92 standard）
Appropriate temperature	Carbon steel : -29°C~425°C Stainless steel : -40°C~600°C
Appropriate medium	Air, water, steam, coalgas, oil and acid, alkali, salt corrosive medium and so on
Drive modality	Worm wheel drive, gas drive, electric drive

• Material for main parts

Parts name	Material
Body	Cast iron, Stainless steel, Cr.MO.Steel, Alloy steel
Disc	Cast steel, Alloy steel, Stainless steel, Cr.MO.Steel
Seal	Stainless steel and high temperature resistant asbestos composed of multiple layers
Stem	2Cr13、1Cr13 Stainless steel, Cr.MO.Steel
Bearing	Austenitic stainless steel, 304 nitride ZG00Cr18Ni10，304nitrification
Additve	Flexible graphite

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