DESIGN ADVANTAGES
- Solid
thermoplastic body and bonnet for best overall corrosion resistance.
- Large diameter
molded in stainless steel diaphragm stud for long life service.
- Fully lubricated
brass or cast iron stem and sleeve. Sizes 3" and larger have bonnet
grease fitting for ease of in service lubrication.
- Extra heavy EPDM
diaphragm or optional PTFE diaphragm fully backed by EPDM, for long
service life under the most severe conditions.
- Unique
concave/convex PTFE/ EPDM diaphragm design insures PTFE barrier returns
to full open position.
- Standard,
adjustable full close position over travel stop to eliminate premature
diaphragm failure due to overtightening.
- Full stroke,
fully protected open/close position indication.
- Stainless steel
or plastic encapsulated external hardware.
- Longer service
life and higher Cv valves than rubber lined valves.
- High pressure,
temperature and vacuum service rated, suitable for most applications.
- Can be used in
lined, metal FRP or thermoplastic piping systems.
- Flanged
application valves designed to fit between ANSI B16.5 Class 150 flanges.
*
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Valves 1/2" - 2 1/2" can be used in vacuum service.
Valves 3" and larger must be ordered special from the factory for use
in vacuum service. Consult factory for more information regarding this
option.
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Materials of Construction
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Item
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Parts
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Pcs
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Materials
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1
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Body
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1
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PVC, PP, PVDF, CPVC
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2
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Bonnet
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1
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PVC, PP, PVDF, CPVC
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3
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Compressor
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1
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1/2"-1" PPG+Nylon
1/2"-10" Cast Iron
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4
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Hand Wheel
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1
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PP
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5
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Sleeve
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1
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1/2"-2" Brass
21/2"-10" Cast Iron
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6
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Stem
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1
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1/2"-2" Brass
21/2"-10" SS 41
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7
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Diaphragm
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1
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EPDM, HYPALON TEFLON?/small>
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8
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Cap
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1
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1/2"-2" Brass
21/2"-10" PVC,PP
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9
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Compressor Pin
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1
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SUS-304
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10
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Name Plate
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1
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PVC
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11
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Grease Nipple
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1
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BRASS
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12
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Stud Bolt & Nut
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SS41, SUS304
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13
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Inserted Nut
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BRASS
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14
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Bolt Nut & Washer
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SS41, SUS304
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15
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Thrust Bearing
|
1
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Standardized 3" - 10" Used Only
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16
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Stopper
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1
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SS-41, BRASS, SUS304
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17
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Set Nut
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1
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SS-41, BRASS, SUS304
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18
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Gauge Cover
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1
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POLYCARBONATE
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19
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Sheet Gasket
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1
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EPDM
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20
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Sheet Ring
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1
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SS-41, BRASS,SUS304
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21
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Spring Washer
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1
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SS-41, SUS304
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VITON?is a trademark of Dupont Dow
Elastomers
TEFLON?is a trademark of E.l. DuPont
FLANGED BODY TYPE 1/2" - 10" DIAPHRAGM VALVES
DESIGN SPECIFICATION
Thermoplastic Diaphragm Valves 1/2" - 10" Flg.; shall be
molded of solid thermoplastic materials for body and bonnet. Body is of the
weir configuration exhibiting large flow area and good flow control
capability. Body is designed to fit between ANSI B16.5 class 150 flanges.
Stem and sleeve shall be brass or cast iron, fully lubricated . Sizes 3"
and larger employs a bonnet grease fitting for ease of lubrication. All
valves shall have an adjustable overtravel stop in the close position to
prevent overtravel and premature diaphragm failure. Full stroke position
indication is enclosed in a clear protective cover. All external fasteners
shall be either encapsulated in plastic or of stainless steel materials.
Materials of construction shall be: (select as required for service)
BODY
PVC,CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM
D-3222
BONNET
PVC,CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM
D-3222
STEM/SLEEVE
Brass, 1/2" - 2",
C.I., 2 1/2" - 10"
DIAPHRAGM
EPDM, Ethylene Propylene Diene Monomer
Fluorocarbon, Viton (E.I. Dupont) for vacuum service only
Fluorel (3M Corp.)
PTFE/EPDM, Teflon (E.I. Dupont)
DIAPHRAGM INSERT STUD
Stainless Steel, Large Diameter
POSITIVE INDICATOR COVER
PC, Polycarbonate, ASTM - D-2848
HANDWHEEL
ABS, ASTM D-1788
Not recommended for compressed air or gas service.
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