DS/J61H-25, DS/J61H-40, DS/J61H-63 type water seal valve for nominal pressure PN2.5 ~ 6.4MPa, working temperature of 0 ~ 450 ℃ fire station condensate return systems and oil and chemical air separation system requirements and pipe, cut off or connected to the line of medium. 

 【Features】 
 1, the product designed and manufactured according to national standard GB12235, the new structure, material selection reasonable, beautiful shape. Connectors with flange and welding, according to different requirements of users with access 
 2, designed as a water seal packing structure, access to 0.6 ~ 1.6Mpa water filling, friction is small, sealed, and the atmosphere can be isolated from the whole system to ensure good air tightness 
 3, stem quenched and the nitrogen treatment, with good corrosion and scratch resistance out 
 4, compact structure, flexible operation, easy maintenance, long life 
 5 sealed stainless steel screwed down seat or seal welding of austenitic stainless steel body is made, pour reliable sealing. Packing replacement and maintenance can be carried out in the case of non-stop, convenient and does not affect system operation 

 【Standard】 
 Design and manufacture: JB/T3595 
 Structure length: GB/T15188.1 
 Pressure temperature rating: GB/T3595 
 Test and Inspection: GB13927 JB/T9092 

 】 【Performance parameters 
 Model DS/J61H-25 DS/J61H-40 DS/J61H-63 
 Working pressure (MPa) 2.5 4.0 6.3 
 Temp (℃) ≤ 425 
 For medium water, steam, oil, non-corrosive gases 
 Materials or 2Cr13 stem 1Cr13 
 Valve body, valve cover, frame WCB25 
 Gate, disc, sealing surface of Cr13 stainless steel or carbide 
 Stainless steel valve seat sealing surface 
 Aluminum bronze stem nut 
 Flexible graphite packing