Omega Engineering BV70 User Manual
Page 3
MATERIALS OF CONSTRUCTION
BODY: Brass - ASTM B-16, or 316 Stainless Steel -
ASTM A276
BALL AND STEM: 316 Stainless Steel
SEATS AND STEM SEAL: Glass Reinforced
P.T.F.E. (Teflon
)
CONNECTION / STYLE
SIZES
Tube / Compresssion 1/4” - 1”
RATINGS
TEMPERATURE: -50 F to 450 F
(also see Pressure Temperature Chart)
PRESSURE: 1000 p.s.i. C.W.P. (Cold Working
Pressure to 150 F)
(also see Pressure Temperature Chart)
VACUUM: 20 Micron
SATURATED STEAM: 150 p.s.i.
FLOW CHARACTERISTICS
The approximate flow rate through a valve can be calculated as follows:
where;
Q = flow rate in gallons (U.S. Std.) per minute
Cv = valve constant
P = pressure drop across the valve in pounds per square inch
G = specific gravity of the media of relative to water
Note: The values derived from the flow equation are for estimating purposes only. Product variances
or systemic factors may alter actual performance.
P
Q = Cv
G
3