American Standard Globe Valve

Product Advantages

● Excellent Throttling Performance: Suitable for regulating steam, gas, and liquid flow.
● High Pressure Capability: Covers Class150–Class1500 service conditions.
● Reliable Sealing: Designed for demanding industrial applications.
● Long Service Life: Precision machining and hard-faced sealing surfaces.
● Compliance with ANSI & API Standards: Easy integration into US-standard piping systems.

Size Range

● NPS 2″ – 16″ (DN50 – DN400)

Pressure Rating

● Class 150 / 300 / 600 / 900 / 1500

Standards

● Design Standard: ASME B16.34 / API 623
● Test Standard: API 598
● Flange Standard: ASME B16.5 / ASME B16.47

Industry Applications

● Oil & gas transmission and processing
● Refinery and petrochemical plants
● Power plant steam and auxiliary systems
● Chemical and industrial process pipelines
● High-pressure utility services
● Energy and offshore facilities

FAQs

1. When does the bonnet design switch from bolted to pressure seal?
Bolted bonnets are standard through the lower-to-mid pressure classes; at Class 900 and above, a pressure seal bonnet is typically used instead, since the seal actually tightens further under internal pressure rather than relying solely on bolt torque — this becomes the more reliable design as operating pressure climbs.

2. Does a higher pressure class also mean a higher temperature rating?
Not directly — pressure class and temperature rating are related but separate: ASME B16.34 pressure-temperature tables show the allowable pressure actually decreases as temperature rises for a given class, so the maximum pressure and maximum temperature generally aren’t both achieved simultaneously.

3. What’s the benefit of a Stellite hard-faced seat over an unhardened one at these pressure classes?
At higher differential pressures, the seat and disc see more erosive wear during throttling — a Stellite or alloy overlay resists that wear significantly better than base metal alone, extending the interval between reseating or disc replacement in continuous-duty service.

4. Can this valve be automated, or is it handwheel-only?
The base design is manual with a handwheel, but the same body typically accepts gear operators or pneumatic/electric actuators for remote or automated control — actuator sizing should account for the higher seating torque that comes with the higher pressure classes.