Steriflow Mark 978INLINE Series - Manual (Page 4)

M
ark
978 S
anitary
G
lobe
-S
tyle
C
ontrol
V
alVeS
- J
orlon
D
iaphraGM
S
eal
J
orlon
D
iaphragm
s
eal
(1-1/2" – 2")
Corrosion resistant coating
with SST fasteners
Namur yoke permits
easy mounting of a
variety of positioners
Extended PEEK guide bushings
ensures smooth, stable move-
ment throughout entire stroke
length
FDA/USP Class VI Jorlon diaphragm
resistant to aggressive chemicals,
suitable for continuous steam service;
Lifetime Warranty
Contoured plug design for true equal
percentage or linear flow characteristic
throughout entire stroke length
Solid 316L barstock construction offers
excellent chemical resistance, ensures
consistent material integrity and surface
finish
Bolted bonnet provides
enhanced strength and
safety over clamped bonnet
Corrosion resistant SST
yoke assembly suitable for
washdown
-4-
FDA/USP Class VI
secondary stem seal
Optimal flow inlet geometry for true flow characteristics.
Self draining geometry in either vertical or horizontal
orientation allows installation flexibility
s
peciFication
Stainless steel sanitary control valve shall be made from ASTM A479 316L barstock material, which includes
body and all wetted metal parts. Control valve with the stem sealed by FDA approved and USP Class VI certi-
fied Jorlon diaphragm with lifetime warranty. The valve stem shall be supported by a one piece, SS NAMUR
Yoke to provide structural rigidity in any installation orientation. Guiding of valve stem/plug shall be outside of
the wetted process areas of valve above diaphragm. Control valve shall have secondary stem seal, and extend-
ed guide bushing to provide additional support for multiple installation orientations. Valve shall be self draining
in any orientation.
Telltale weephole between
primary diaphragm and secondary
stem seal per ASME BPE 2009