Flowserve Valtek ShearStream HP Control Valves - Manual (Page 8)

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User instructions - Shearstream HP - VLENIM0027-01 03.08
8
Figure 4: Seat Configurations
* For sizes  inch and .5 inch there is only one metal seal ring
Metal seat: shaft downstream* Metal seat: shaft upstream*
Soft seat and flow ring Dual*
Heavy duty metal seat Heavy duty soft seat
Metal Seals Metal Seals
Retainer Body
Ball
Retainer Body
Ball
Pressure
energizes seal
to flex into ball
Ball
Secondary
seal locks primary
seal to ball
Ball
Soft Seal
Retainer / Flow ring Retainer
Body
Ball
Body
Soft Seal
Metal Seal
Body
Soft Seal
Seat
Body
Retainer Retainer
Seat keeper
Ball Ball
Wave Springs Wave Springs