Seal vacuum butterfly valve

• Features and performance
• 1. This prouct is widely used in power industry on the pipeline with the steam and air medium,served as circulating and shutting-off usage;
• 2.It is the sealing butterfly valve with the feature of rigid seal and quick-operation;
• 3.Adopted double-seat type,It carries out rigid bi-direction seal,further more fulfilled the pressure water seal on double seats and packing to stem,which increase the valve reliability;
• 4.The seal rings are made of special rubber that is resistant to high-temperature and outstanding aging-resistance which will prolong the usage-life;
• 5.The "T" cross-section seal-ring is suitable for high-speed steam working condition,if adjusting the extent of the seal-ring pressure which will get the optimal seal and operation effect;
• 6.The seal-ring is set on the disc which is not needed to disassemble the valve when replacing the new one.
•  
• Direction
• Standards
• Designing & manufacturing are according to the Enterprise standards.
• Flange is subject to Enterprise standards.
• Face-to-face dimension is by the regulation of Enterprise standards.
• Pressure test is according to Enterprise standards.
• *Please contact us for items made according to other standards.
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• Coding system
• 
• Specification

  Nominal pressure	PN
  	0.25-0.6MPa
  Shell Test	1.5PN
  Seal Test(Water)	1.1PN
  Seal Test(air)	0.6MPa
  Body Material	NBR	EPDM	PTFE
  Working Temp	0~80.C	0~150.C	0~180.C
  Suitable Medium	Steam.Air

• 
•  
• Discharge parameter diagram

  Nominal Dia DN	mm	200	250	300	350	400	450	500
  	in	8	10	12	14	16	18	20
  Discharge parameter Cv		2256	3178	4942	6317	8604	11053	13850

•  

• Nominal Dia DN	mm	600	700	800
  	in	24	28	32
  Discharge parameter Cv		21489	33866	42638

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• Dimensions
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• ZKD Bi-direction seal vacuum butterfly -valve
• ZKD941X-2.5 ZKD941X-6

  Nominal Dia (mm)	Nominal Pressure (mm)		L	A1	A2	A3	A4	H1	D	B	B1	B2	B3	D0	H	H0	L1	L2	L3	h1	l1	l2	d1	Weight(Kg)
  																								Manual	Blectronic
  1000	0.25	0.6	300	782	606	194	1041	1141	320	872	302	320	242	630	975	705								1960	1913
  1200	0.25	0.6	360	782	606	194	1041	1254	320	872	302	320	242	630	1130	850	500	95	150	800	180	280	37	2442	2451
  1400	0.25	0.6	390	926	770	223	1266	1519	400	872	302	320	242	630	1201	1000	700	95	150	900	180	280	41	3229	3573
  1600	0.25	0.6	440	926	770	223	1266	1640	400	1052	302	425	300	450	1540	1131	1000	95	180	1000	180	280	41	5346	4699
  1800	0.25	0.6	490	995	900	173	1266	1760	400	1052	302	425	300	450	1675	1265	1100	95	180	1100	190	310	41	6438	6455
  2000	0.25	0.6	540	995	900	173	1266	1904	400	1052	350	390	350	500	1700	1400	1200	120	220	1200	240	310	43	8075	8242
  2200	0.25	0.6	600	995	900	173	1266	2050	400	1400	430	1000	670	450	2050	1630	2200	120	220	1300	330	570	43	13000	14900
  2400	0.25	0.6	660	1170	1340	430	1590	2230	400	1400	430	1000	670	450	2200	1750	2400	160	280	1360	330	570	45	15300	15900
  2600	0.25	0.6	720	1170	1340	430	1590	2370	400	1400	430	1000	670	450	2400	1880	2600	160	280	1500	330	570	45	17200	17500
  2800	0.25	0.6	790	1270	1800	550	1900	2450	400	1600	550	1300	900	450	2500	2050	2800	200	500	1610	400	750	48	20400	20500
  3000	0.25	0.6	860	1270	1800	550	1900	2700	400	1600	550	1300	900	450	2700	2080	3000	200	500	1690	470	790	48	26000	26200

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