Globe Valve Y Type Bellow Seal - DIN | Valvosider

Valvosider Y-Type DIN — Globe Valve with Bellow Seal

The Valvosider Y-Type Bellow Seal per DIN is a globe valve with an angled flow path. The Y geometry reduces local resistance compared to a traditional straight globe valve, maintaining its primary function: isolation and, with the appropriate disc, limited throttling. Suitable for steam, condensates, hot water, thermal oil, gases, and industrial fluids.

Pressure Ratings and DN Versions

The series includes flanged DIN versions:

• Fig. 1432SO: PN25/40, up to DN600 as per catalog.
• Fig. 1560YSO: PN63, up to DN600.
• Fig. 1570YSO: PN100, up to DN300.

Body materials: 1.0619, 1.4408, 1.4581, depending on pressure, temperature, and media compatibility.

Construction and Sealing

Construction features a bolted bonnet, outside screw and yoke, with rising stem, rising handwheel, and loose disc. The bellow is X6CrNiTi18-10. Gaskets are stainless steel reinforced with graphite, and secondary sealing is achieved with graphite rings and wiper rings.

Standards

Designed according to EN 12516, face-to-face per EN 12982 / EN 558, flanges per EN 1092, BW ends per DIN 3239, testing per EN 12266, marking EN 19, CE-PED, and material certificates EN 10204 3.1 / 3.2.

Selection Criteria

Selection should be based on PN, DN, temperature, differential pressure, body/trim material, and stem sealing requirements. For pressure below the disc, ΔP limits are: DN80 85 bar, DN150 21 bar, DN200 14 bar, DN300 6 bar, DN500 2.8 bar, DN600 2.2 bar. Above these, a gear operator or arrangement with pressure above the disc and bypass is required.

Available Options

Options include top flange ISO 5210, gear, chain wheel, pneumatic, hydraulic or electric actuator, limit switches, locking/interlock, PTFE soft seats, stem extension, regulating disc, double-stage disc, stop-check disc, live loaded packing, drain plug, BW ends, and ANSI connections.

FAQ

When to choose Y-Type over straight globe?
When a bellow seal isolation valve with lower pressure drop is required.

Can it be used for regulation?
Only with a regulating disc and control of ΔP, velocity, noise, and seat wear.