• Hard Seal Butterfly Valves
  • Hard Seal Butterfly Valves

Hard Seal Butterfly Valves

Driving Mode: Manual
Connection Form: Lug Support
Structure: Three-Eccentric Sealing
Seal Form: Auto Sealed
Valve Stem: Normal
Work Pressure: Low Pressure (Pn<1.6mpa)
Customization:

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Basic Info.

Model NO.
D343
Working Temperature
Medium Temperature (120°C<T<450°C)
Material of Seal Surface
Metal Hard Sealed
Valve Body
Casting
Application
Industrial Usage, Water Industrial Usage, Household Usage
Material
Wcb 216, 304. 316
Transport Package
Polywood
HS Code
84134090
Production Capacity
5000sets/Year

Product Description


Hard Seal Butterfly Valves
Hard Seal Butterfly Valves
The Solid Quarter Turn Valve is a ZERO LEAKAGE Metal Seated Valve that features a triple eccentric, non-rubbing conical metal seat which offers tight shut off for many thousands of cycles. The seating of the valve is actually enhanced by continued operation. These unique design features combine to give the Solid valve the following attributes: Bidirectional tight shut off on services ranging from cryogenic to 600 degree centigrade, limitations being governed by the selection of body, disc and seal materials. The Solid is inherently fire safe which means the valve can offer ZERO LEAKAGE before, during and after the fire as there are no soft components in the valve seating areas. Simple  direct mounted on ISO standard mounting flanges. The Solid has good control characteristics through most of its travel, and with the addition of a positioned will give control suitable for many applications. The standard valve is wafer pattern conforming to API 609 dimensions and has enormous space and mass savings when compared with other types of valves. Solid valves are also available in full lug and flanged patterns with dimensions in accordance with ISO 5752 or API 600, making them interchangeable with gate, ball and plug valves. As can be seen from the illustration, this design utilizes a wedging action to put the laminated seal ring in compression when in contact with the body seat. Further, as the seal ring has clearance between disc and the inside of the lamellar it is able to self align and also flex to absorb stresses that might be induced by temperature fluctuations or pipeline movement.
CarbonSteel/ENC
The material selection will determine the suitability of the valve for the service media and the expected temperature range. The responsibility
for final material selection rests with the customer. We can, however, suggest suitable combinations based on our experience. The following
table shows the current material selection that is available, but special materials can be substituted to suit particular applications
Body and disc Seat Spindle and keys Laminated seal ring Bearing Packing and Gaskets
CarbonSteel/ENC Stainless steel AISI 431 AISI 304 Stainless chrome or
nickle plated
Graphite/gaphoil
Stainless steel Stellite 21 or
Colmonoy wearresistant
facings
17-4ph
AISI 630
AISI 316 Stellite shell Graphoil
Acid resistant alloy
steels
Special alloys
FAL 223 Hardened stainless Graphite with
Bearing prot graphoil
Steels for high
and cryogenic
temperatures



Sintered PTFE and
bronze




Hard Seal Butterfly Valves

 

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