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P Series 9 Series 78 Series A7000 Series Changeover Valve History

 

  STARFLOW  Type P3, P4 and P5:

v     Certified ASME Section VIII Division I of the Boiler and Pressure Vessel Code 

v     Capacities certified by the National Board of Pressure Vessel Inspectors on Liquid, Air, Gas and Steam. 

v     API sizes 1 x 2 to 8 x 10

v     API orifice sizes .110 to 26.0 sq.in (D T)

v     Other sizes: 10 x 14 (42 sq. in orifice)  and 12 x 12 x 12 dual outlet (63 sq.in orifice) 

v     Pressures from 5.0 to 6000 psig

v     Temperatures from 450 to +1000 degF

v     Starsoft soft seat for premium tightness

v     Optional balanced bellows (Type P4) design isolates the working parts from the service media and balances the valve against the effects of backpressure 

v     Optional open bonnet (Type P5) for air and steam service

v     Optional materials of construction include: 316 sst, Monel,Hastelloy, Duplex sst, NACE compliance. Other materials available upon request.

 

SERIES 9

 

v     Manufactured in accordance with the requirements of ASME Section VIII of the Boiler and Pressure Vessel Code.

v     Capacities are certified by the National Board of Pressure Vessel Inspectors (D, E, F, and G orifice; air, gas, steam, and liquid) 

v     Full Lift

v     Full Nozzle

v     Pressure Limits: 6250 psig

v     Temperature: 750 degF

v     Sizes: x to 1-1/2 x 1-1/2

v     Orifice areas: .044, .124. .222, .352, and .568 sq. in.      

v     Bellow design available               

v     Connections:

      Screwed: MNPT x FNPT Standard (FNPT inlet optional)

      Flanged: ANSI cl. 150 thru 2500

      Other connections available on request

v     Standard Construction:

      Body/Bonnet: WCB-SA216

      Trim: 316L-SA479 / CF3M-SA351

      Spring: Inconel X-750

      Optional materials of construction include: 316 sst, monel, Hastelloy, Duplex sst, NACE compliance. Other materials available upon request.

 

SERIES 78 Pilot Operated Pressure Relief Valves

Series 78 pilot operated safety relief valve is an autonomous valve. It does not need any auxiliary source of power to operate. The advanced technology has been adopted by the U.S. and French Navies and more recently by petrochemical plants. It is complimentary to the range of spring loaded relief valves and covers a wide range of field applications under severe conditions.

v     Pop or modulating action

v     Flanged; Semi nozzle

v     Certified ASME Section VIII Division I of the Boiler and Pressure Vessel Code 

v     Capacities certified by the National Board of Pressure Vessel Inspectors on Liquid, Air, Gas, and Steam. 

v     API sizes 1 x 2 to 8 x 10

v     API orifice sizes .110 to 26.0 sq.in (D T)

v     Pressures from 26 to 6250 psig

v     Temperatures from 58 to +500 degF

v     Leak-free pilot                                                       

v     On-off opening, fully open or closed (limited maintenance)

v     Perfect tightness (no production loss)

v     Excellent repeatability and reliability

v     Adjustable blowdown

 

SERIES A7000 Manufactured by Hopkinsons

 These valves can be seen on installations ranging from shell boilers for heating and process steam up to the highest capacity units on electricity generating stations.

 v     ASME Section I certified

v     Sizes 2 x 3 to 6 x 8                                          

v     Flanged (Class 150 to 2500) or Welded inlet

v     Used on Drums, Superheaters, Reheaters, and Economizers.

v     Developed from a proven design with many years of existing operational experience. 

v     High capacity discharge nozzle.

v     Simple external blowdown adjustment using one ring, no plugs to remove in body steam space. 

Setting position visible externally.