Piston Check Valve 90° Angle - DIN | Valvosider

Valvosider DIN 90° – Angle Piston Check Valve

The Valvosider DIN 90° is an angle-type piston check valve designed for installation in piping systems where a 90° change in flow direction is required, combined with backflow prevention. Operation is achieved via differential pressure and a return spring; no actuator or external control signal is required.

Variants and Pressure Ratings

• PN16: DN15–DN600, type 1411
• PN25/40: DN15–DN600, type 1441
• PN63: DN15–DN600, type 1560AR
• PN100: DN15–DN300, type 1570AR

Construction and Materials

Standard design is full opening with bolted cover, lapped disc/seat, and replaceable seat. Body materials: 1.0619 (carbon steel) or 1.4408 (stainless steel). Seat surfaces: X20Cr13 or X5CrNiMo17-12-2, with optional overlays (Stellite, Monel, Hastelloy) for corrosion or wear resistance.

Connections and Sealing

Standard connection: flanged to EN 1092. Optional: BW ends, RTJ flanges, ANSI connections. Packing: stainless steel reinforced graphite, with PTFE or other materials available. For enhanced seat tightness, disc with PTFE or elastomer is available.

Standards

Design: EN 12516. Face-to-face: EN 558 / EN 1298L. Flanges/rating: EN 1092. Marking: EN 19. Testing: EN 12267. Certification: EN 10204 3.1 / 3.2. CE / PED compliant.

Applications

Suitable for steam, condensate, process water, thermal fluids, hydrocarbons, and compatible gases. Material selection based on temperature, pressure, and chemical compatibility. The angle pattern eliminates the need for separate direction-change fittings in compact piping layouts.

FAQ

When is the angle pattern selected? When a 90° piping change coincides with the need for check valve function.
Is an actuator required? No, operation is automatic via flow and spring force.