Globe Valve - Conventional Power Plant Valve | Neway

Globe Valve Conventional Power Plant Neway

Globe valve for power generation units, primarily in small isolation and discharge lines. Neway specifies usage in shut-off and discharge positions, with a small diameter, high-pressure design and bonnetless structure.

Key Technical Specifications

• Size: 1/2"–2" / DN15–DN50
• Pressure rating: ASME Class 900–4500 / PN150–PN760
• Body materials: carbon steel, stainless steel, alloy steel
• Ends: butt-weld, socket-weld, threaded
• Actuation: handwheel, gearbox, pneumatic, hydraulic, electric

Application Scope

Used in high-pressure auxiliary lines in boiler islands, steam systems, drains, vents, blowdown, feedwater auxiliaries, and discharge lines. For high-temperature steam, check body material, trim, packing, design temperature, and operational cycles.

Selection Criteria

Selection should be based on:

• pressure class and design temperature
• body material against creep, corrosion, and thermal cycles
• BW/SW/threaded connection per piping class
• manual or actuated operation requirement
• seat leakage and stem packing
• accessibility for packing maintenance

Use in Power Plant Systems

In Neway's power plant brochure, valves cover applications in combined cycle, coal-fired, and geothermal power plants, with positions such as drum, superheater, steam turbine, condensate, feedwater, economizer, and flash tank.

Manufacturer Certifications

The brochure lists approvals/certifications such as ISO 9001, API Q1, API 6A, API 6D, CE/PED, ASME N/NPT, TA-Luft, ABS, CU-TR, and Fire Safe approvals.

FAQ

When is this type of globe valve selected?

In small diameter high-pressure applications where isolation or line discharge is required, not just general low-pressure shut-off.

Is it suitable for throttling?

Only after checking Δp, velocity, noise, and potential seat/disc erosion. Primary use is shut-off/discharge.