Non Return Sanitary Check Valves Finely Finished Surface , EPDM
Standard Seal Material
Sanitary check valve also known as one-way valve, its role is to
prevent the pipeline water back in the media. Are different to many
other types of valves,for check valves work automatically and most
are not controlled by a person or any external control.
Accordingly, most do not have any valve handle or stem. Thus there
is an important concept in check valves, it is, the cracking
pressure. Cracking pressure is the minimum upstream pressure at
which the valve will operate. So the check valve is designed for
and can therefore be specified for a specific cracking pressure.
NYHAU sanitary check valve performance parameter:
Applicable medium: water, steam, oil, nitric acid, acetic acid,
oxidizing medium, urea and so on,
Connection: flange, butt welding, thread, socket welding.
Valve body and disc materials: AISI 304 or AISI 316L, 304L and 316
materials
Valves can manufacture sanitary check valve according to your
requests.
Application:
Sanitary check valve, also known as "non-return valve", is designed
for use in process piping installations to prevent reverse flow.
Specification:
Sizes are available from 1/2" to 4" (1/2", 3/4", 1”, 1 1/2", 2", 2
1/2", 3", 4")
DN15 to DN100 (DN15, DN20, DN25, DN40, DN50, DN65, DN80, DN100)
Valve body can be AISI 304 or AISI 316L.
Valve seat: EPDM, VMQ (silicone), Viton (FPM).
End connection can be butt-welded, sanitary clamp, threaded or
others upon request.
Max. working pressure: 145psi (10bar)
Opening pressure: 4.5psi/0.3 bar (DN25/1"), 3 psi/0.2 bar
(DN32/0.75" to DN40/1.5"), 1.5 psi/0.1 bar (DN50/2" to DN100/4")
Working temperature range: 14 ~ 248°F (-10 ~ 120°C) with EPDM seat.
Surface treatment: Ra 32μin (0.8μm) as default, others available
upon request.
| Technical Parameters |
| Steel material | Product wetted steel parts | AISI 304 or 316L (1.4306 / 1.4404) | Provided with material inspection report |
| Other steel parts | AISI 304 |
| Seal material | Standard | EPDM | All seal materials comply with FDA 21CFR117.2600 |
| Options | VMQ (Silicone) or Viton (FPM) |
| Pressure | Working pressure | ≤145psi (10bar) |
| Opening pressure: | 4.5psi/0.3 bar (DN25/1"), 3 psi/0.2 bar (DN32/0.75" to DN40/1.5"),
1.5 psi/0.1 bar (DN50/2" to DN100/4") |
| Temperature | Working temperature | 14 ~ 248°F (-10 ~ 120°C) with EPDM seat. |
| Surface treatment | Inside surface treatment | Ra 16 ~ 32µin (0.4 ~ 0.8µm) |
| Outside surface treatment | Ra 32 ~ 64µin (0.8 ~ 1.6µm) |
| Connection | End connections can be butt-welded, sanitary clamp, threaded or
others upon request. |
