swing  check  valve

 check  valve is widely used in such  fields as  petroleum  melting ,chemical  induatry ,paper-making ,pharmaceutical  industry ,food industry ,water poweer ,electric power,city planning ,steel,etc.

Main  specifiction

Design and manufacture   per ANSI B16.34 and API6D or BS 1868 standard

Face  to face  dimensions      per ANSI B16.10 standard

End flange  dimensions  per ANSI B 16.5 Standard (1/2-24)or MSS sp44 or API605(28-30)  Pressure temperature  ratings    per ANSI B 16.34 standard

Pressure  test           per  API598 standard

Nominal  pressure   class 150-2500

Nominal  diameter  NPS1/ 2 -30

choose for customer

1  size of NPS  and  size of class

2  type of  connection

 ( a)  flange(RF ,FM,M, ,TG ,FF,,RJ, SW,,BW, TH)

R.F and R.T.J ype of connection flange ends to ANSIB16.5 standard or API605and MSS sp-44 standard

B.W flange  ends to ANSI B16.25 standard

(b)interal thread 

 (c)external  thread

 (d) welding

 (e)twin-clip

(f)clip

(g)  cutting  sleave

3  type of  operation

connection  dimensions of worm actuator , gear actuator ,electric  actuator ,pneumatic actuator , hydraulic actuator to ISO5210 standard

4         other  equipment

 anti-static  construction "AS" and  fire -resistant  construction "FD"

5         materialsaccording to  ASTM

  carbon steel: WCB , A105,WCC,WCA, LCB,LCC;alloy steel:WC6,WC9,:cast stainless steel CF3,CF8,CF3M,CF8M; forged stainless steel :304,316,304L,316L;Cr5Mo,1Cr18Ni9Ti,0Cr17Ni12Mo2Ti  and  so  on