Steriflow JSB Series - Manual (Page 3)

-3-
JSB S
erieS
B
io
-P
harma
G
aS
B
ack
P
reSSure
r
eGulatinG
V
alVe
F
eatures
& B
eneFits
SST spring chamber
suitable for washdown
ASME BPE SF5, 20 Ra μin
(0,5 Ra μm) electropolish -
standard
Metal trim
components
100% 316L
FDA/USP Class VI seat and seal
material for ANSI Class VI shutoff
Optimized minimal
internal volume
Sanitary clamp
connections
Jorlon Diaphragm
FDA/USP Class VI
approved – unsurpassed life
Fine thread pitch for
precision setpoint
adjustments
First compact gas regulator
fully drainable in both vertical
and horizontal installation
No cracks, crevices or
threads below diaphragm
Guiding done above
the wetted process
To select a valve with the proper Cv:
1. Convert pressure and flow units to those shown on graph.
2. Select the graph below with a flow range (x axis) that encompasses the minimum and maximum flows
of your installation, and with an appropriate outlet regulated pressure range (y axis). Note: Your max
flow cannot exceed either of the graphs, nor can your desired set point be below 4 psi, or above 125
psi. Note also that the maximum inlet pressure allowed is 150 psig.
3. Plot your desired set point on the graph you chose above, at the flow rate you expect that set point.
4. Pick an outlet pressure spring range flow curve that contains your set point. Eg. 50 - 125 psi, 35-60 psi, etc.
5. Draw a curve with the same slope as #4 above parallel to the spring range flow curve you have
chosen through your plotted set point. That curve approximates the flow of your valve under operating
conditions.
6. Note that you may also use the SFCV sizing program for Globe style valves to calculate approximate
flow or Cv.
Autoclavable Anodized
Aluminum Knob available
as cataloged option