Duo Disc spring check valve

• Construction feature:
• 1.Short in face to face dimension;
• 2.Small in size and light in weight;
• 3.Fast open and close,small water hammer pressure;
• 4.such valve can bet used in horizontal or vertical pipelines,and be very easy to be mounted;
• 5. expedite in flowing system.small in fluid resistance;
• 6.quick action and good seal;
• 7.short in disc travel distance,small in valve shut impaction pressure;
• 8.simple and compaction configuration with nice shape;
• 9.prolong the usage life,high reliable.
•  
• Application
• double check valve is applied to the pipelines that is norminal pressure PN1.0 MPa-42MPa, Class 150-800,Size Dn 15-1200mm,Working Temp:-196-530^.Cwhich can prevent the medium flowing back.With adopting different materials,it can be used in water,steam,oil,acid,ect various medium.
•  
• Specification
• Design and manufacture:API-6D
• Face to face dimension:API-6D
• Piping flange:ANSI B 16.5
• Pressure-Temp grade:ANSI B16.34
• Test and lnspection:API598
•  
• H76H
• 
• Configuration size

  Pressure	Size		Dimension		Weght
  	NPS	DN	A(mm)	B(mm)	(Kg)
  Class 150	2	50	103	60	2
  	2.5	65	122	67	3
  	3	80	135	73	4
  	4	100	173	73	6
  	5	125	195	86	8
  	6	150	220	98	13
  	8	200	227	127	25
  	10	250	337	146	39
  	12	300	407	181	54
  	14	350	448	184	80
  	16	400	512	191	117
  	18	450	547	203	138
  	20	500	604	219	163
  	24	600	715	222	331
  Class 300	2	50	110	60	3
  	2.5	65	128	67	4
  	3	80	147	73	6
  	4	100	179	73	8
  	5	125	214	86	15
  	6	150	249	98	18
  	8	200	305	127	31
  	10	250	359	146	51
  	12	300	420	181	77
  	14	350	483	222	117
  	16	400	537	232	190
  	18	450	594	264	265
  	20	500	652	292	265
  	24	600	772	318	410

•  
• H46H
• 
• Configuration size

  Pressure	Size		Dimension			Weght
  	NPS	DN	A(mm)	B(mm)	C(mm)	(Kg)
  Class 150	8	200	343	127	194	42
  	10	250	406	146	243	86
  	12	300	483	181	289	99
  	14	350	533	184	318	124
  	16	400	597	191	381	160
  	18	450	635	203	428	185
  	20	500	699	219	482	250
  	24	600	813	222	575	389
  Class 300	12	300	521	181	289	152
  	14	350	584	222	318	195
  	16	400	648	232	365	280
  	18	450	711	264	409	385
  	20	500	775	292	454	488
  	24	600	914	318	562	686

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