7900 Series Available Orifice Sizes

API ORIFICE SIZE ORIFICE DIAMETER (in) ORIFICE AREA (sq in) Kd (gas) Kd (liquid) SLOPE FLOW FACTOR MINIMUM SET PRESSURE (psig) MAXIMUM SET PRESSURE (psig)
E 0.52 0.212 0.290 0.45 1.128 3.63 15 2500
G 0.775 0.472 0.429 0.45 3.71 8.07 15 2000

Elastomer Materials

Material Durometer Temperature Set Pressure
Min Max Min Max
Viton 90 -15 400 50 3000
Viton 50 -15 400 15 150
HNBR 80 -25 325 15 2500
EPDM 80 -70 250 15 2500
TEFLON - -420 450 250 5500