The Neotecha NeoSeal is a PTFE lined bare stem butterfly valve according ISO 5752/5 short (EN 558-1/T5) with various corrosion resistant disc materials. These valves are ideally suited for corrosive applications, requiring reliable performance, tight shutoff, constant torque and no maintenance.
- The elastomer back-up pads behind the liner ensure a tight fit around the disc, for a bubble tight shut-off.
- The liner provides a wide flange sealing surface.
- A one piece thin disc stem lined with 3 mm molded PFA providing high Kv values.
- The liner and disc are the only two valve parts in contact with the medium.
- Primary shaft sealing by preloaded contact between disc and liner hub.
- Secondary shaft seal by oversizing the shaft diameter in relation to the shaft hole in the liner.
- The liner and disc are molded and machined to close tolerances to provide:
- low torque
- less stress and deformation during opening and closing
- Vacuum tests with helium with pressures less than 20 Pa absolute (0.2 mbarA).
- Optional TFM lining available for extremely demanding applications.
- Integral body locating holes to ensure perfect centering of the valve.
- Actuator flange and stem dimensions acc. ISO 5211.
Specifications
Material: Ductile Iron
Operating Temperature: Less Than 200 C
Pressure Class: PN
Seat/Seal Type: Lined
Valve Size Standard: DN
Valve Type: Butterfly
Operating Temperature: Less Than 200 C
Pressure Class: PN
Seat/Seal Type: Lined
Valve Size Standard: DN
Valve Type: Butterfly
NSD Series / Model: Neoseal NSD
0040 Size: DN0040/ NPS 1 1/2″
L0 End Connection: Lugged
PB Drilling / Schedule / Thread: PN 10 / 16
20 Face to Face: EN558 Series 20 – ISO 5752 BS 20
10 Pressure Rating: 10 bar / 150 psi
D2 Body Material: Ductile Iron A395 60-40-18 / EN 5.3103 (JS1049)
L11 Disc Material: PFA Coated
SH Stem Material: Stainless Steel 17-4 PH
T5 Seat Material: PTFE / Silicon
00 Packing / Gaskets / Seals: Standard (Refer to Product Literature)
I Operator Mounting Type: ISO 5211
B Actuation Type: Bare Stem
