Zhejiang Youfumi Valve Co., Ltd. |
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PTFE Lined Swing Check Valve
Technical Specification
Design and Manufacture Standard: ASME B16.34, HG/T 3704
Face-to-face Dimension: ASME B16.10, GB/T 12221
Flange Standard: ASME B 16.5, GB/T 9119, DIN, JIS
Inspection and Testing: API 598, GB/T 13927
Product Specification
Body Material: WCB, ASTM A395, CF8, CF8M
Lining Material? ? PTFE, PFA, PO, FEP
Nominal Diameter: 1/2"-14"(DN15~DN350)
Pressure Range: Class150, PN10, PN16
Product description:
1. Youfumi Lined check valves come in several forms, all of which
fulfill the same basic purpose, namely to allow forward fluid flow,
but to minimize backwards flow. They prevent the back-flow of
liquids in pipelines, prevent siphoning of pumps and eliminates
pump impeller rotation in opposite direction due to back-flowing
media. Generally check valve is automatically working. Under the
pressure function of one direction flow, the disc opens, while when
the liquid backflows, the valve will cut the flow.
2. Youfumi lined swing check valves H44 have a disc that rotates or
swings out of the fluid flow in the forwards flow direction, but
that swings back against its seat to prevent backwards flow.
3. Youfumi fully lined wafer swing check valve H74 is of two piece
construction with only one moving part, ideal for use in totally
lined piping systems in corrosion applications. The valve can be
mounted horizontally or vertically with upward flow.
4. Youfumi lined ball check valve H40 do not have a spring to help
with valve closing, limiting their use to vertical lines with
upwards forward flow. The solid PTFE ball at valve body lining
guarantees that ball rolls into the seat due to gravitation.
Self-cleaning effect due to permanent ball rotation, resistance
against solid particles.
5. It can sustain any corrosive medium in addition to the? ? Molten
alkali metals and fluorine elements? ? . It is ideal products used
in chlor-alkali, industrial in organic chemicals, metal and mining,
nitrogen and phosphatic fertilizers, petroleum refining,
pharmaceutical etc.
6. Lining material: PFA, FEP, GXPO etc.
7. Youfumi lined check valves are available as per the needs of
applications in additional sizes and other than standard materials.
Material Specification:
1. Body/Disc/Bonnet: A216 WCB+Lining material; A351 CF8/A351
CF8M+Lining material; A351 CF3/A351 CF3M+Lining material
2. Ball: PTFE
3. Lining material: FEP; PFA; GXPO
4. Bolt: A193 B7; A320 B8; A193 B8M