Description
Needle Valve
Control and shut-off valve for drinking water and service water up to 50°C
DN200 – 2000, PN10 – 16 – 25
General information
- One-piece body in EN GJS 400 15
- Wear-resistant, corrosion-resistant and infiltration-proof piston guides in the body by way of micro-finished bronze weld overlay
- Designed for cavitation-free operation in all modes of operation
- Perforated or slotted optional anti-cavitation cylinder
- Piston sealed EPDM ring
- Anti-blowout shaft
- Tightness to DIN EN 12 266-1
- Flange connection dimensions to EN 1092 or ANSI
- Piston: stainless steel 1.4301
- Retaining ring: stainless steel 1.4301
- Crank gear: stainless steel 1.4021
- Valve shaft: stainless steel 1.4021
- Bolts in touch with the medium: stainless steel 1.4031
- Maintenance-free shaft bearings made of bronze
- With self-locking, encapsulated, maintenance-free worm gear in protection degree IP67, incl. mechanical position indicator
- With hand wheel
- With four lifting eyes
- Certificate EN 10204 3.1
Corrosion protection
- Inside and outside epoxy-coated, coating thickness >250 µm, blue RAL 5010
Design specifications
Q max. = _____ m3/h at _____ bar
Q min. = _____ m3/h at _____ bar
Dynamic pressures
Inlet pressure at Q max. _____ bar, at Q min. _____ bar
Back pressure at Q max. _____ bar, at Q min. _____ bar
Static pressures when the valve is closed
Inlet pressure: _____
Back pressure: _____
