4
AsepticDiaphragmValves
BodyRanges
SaundersBodyRange
CRANE ChemPharma, Saunders offers valves with bore and
end specifications compliant to the full range of global
pipe standards. The dimensions of outside diameter and
wall thickness differ according to the tube specification as
illustrated in theexample shownbelow fornominal sizeDN25
(1.00”).
Different tube standards have different bore diameters. This
results in changes to the internal geometryof the valvebody
andcausesdrainangles tovarybasedonboth tube standards
andalsonominalvalvesize.AllCRANEChemPharma,Saunders
bodiesaremodeledusing3Dsoftwarethat identifiesoptimum
drainangle for eachvalve sizeand tube specification.
Standardbodymaterial for all forgedbodies is stainless steel
dual certified to 316L(ASTM A-182) &DIN1.4435 with the
additional specification for controlled sulfur, 0.0017%-0.05%.
This provides conformity with most major international
specification requirements and compatibility with bio-
pharm piping systems. Controlled sulfur provides enhanced
weldability and meets the requirements of the ASME BPE
Standard.
S
16swg 18swg
5S
10S
40S
Series1 Series2 Series3
BSO.D.-Rohr
Schedule
ISO1127
DIN11850
SMS3008
ØD
Cast bodies are available from 316L stainless steel. Bodies
produced fromalternatematerials suchasHastelloy®, AL6XN,
904LandTitaniumarealsoavailable.
Factorswhichaffect drainability include:
·Valve sizeandend specification
· Internal surface finish
·Drainorientation (as shown)
· Surface tensionandviscosityofmedia
· Pipe runangle–generally recommendedat 2 to3
degrees
Drainability
The diaphragm valve has outstanding self-draining
characteristics and is capable of draining inboth vertical and
horizontal orientations.
Drainability inaprocess system isultimately the responsibility
of the systemdesigner and enduser as a result of the factors
denotedabove.
a
Material
ASMEBPETableDT-3
Element
%
Carbon
0.03max.
Silicon
1.00max.
Manganese
2.00max.
Nickel
12.50min.
Chromium
17.00min.
Molypdenum
2.50min.-3.0max
Nitrogen
.0110max.
Phosphorus
0.040max.
Sulfur
12.50min.-0017max.
Material
DIN1.4435/316LEN10222-5ASTMA-182
Element
%
Carbon
0.03max.
Silicon
1.00max.
Manganese
2.00max.
Phosphorus
Sulphur
0.03max
Chromium
17.0/19.0
Nickel
12.5/15.0
Molybdenum
Nitrogen
0.11
