User Manual

Mark 978LF Sanitary Low FLow ControL VaLVeS
speciFications
Sizes: 1/2" (DN15) & 3/4" (DN20)
Material: 316L Barstock body and trim
End Connections: ASME Tri-Clamp, butt weld, for
others, consult factory
Cv (Linear or Equal Percentage):
0.05
0.08
0.10
Body/Bonnet Seal: Teon
®
gasket (FDA/USP
Class VI)
Shutoff: ANSI Class III
Actuator: 14M multispring actuator, aluminum
(standard) or SST (optional)
O-Ring Material: EPDM, Viton, Flouraz, Silicone,
Kalrez (all FDA/USP Class VI)
Maximum Pressure @ 100°F (37,8°C): 450 psi (31,0
bar)
Pressure @ Maximum Temperature: 200 psi @ 300°F
(13,8 bar @ 149°C) depending on o-ring selection
Maximum Pressure Drop: up to 450 psi (31,0 bar)
Weight:
• 8.2 lbs (3,7 kgs) – with Aluminum MK14M actuator
• 10.2 lbs (4,6 kgs) – with Stainless Steel MK14M
actuator
cv vs travel
Dimensions
Cv 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
0.10 EQ 0.007 0.011 0.014 0.018 0.022 0.025 0.029 0.032 0.058 0.083 0.106
0.08 EQ 0.007 0.010 0.012 0.015 0.018 0.020 0.023 0.025 0.046 0.066 0.085
0.10 LN 0.007 0.018 0.028 0.038 0.048 0.058 0.068 0.078 0.088 0.098 0.107
0.08 LN 0.007 0.015 0.023 0.031 0.039 0.046 0.054 0.062 0.069 0.077 0.084
other Cv's available upon request
Ø6.25
(158,8)
9.02 (229,1)
1.80 (45,7)
2.10
(53,3)
Tolerance: BWE, FE, Tri-Clamp & Tube End F-F
Dim are + 1/16" all other dimensions: + 1/2"