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Valves

Globe Valve

Bolted-bonnet globe valve for throttling and on/off duty.

Category
Valves
Subcategory
Throttling / Isolation
Applicable standards
5
Issuing bodies
3

Description

Bolted-bonnet globe valve for throttling and on/off duty.

Applicable Standards (5)

API — 2 standards

API 602 Gate, Globe, and Check Valves for Sizes DN 100 (NPS 4) and Smaller for the Petroleum and Natural Gas Industries
Edition: 11th Edition (2022) Region: USA, Global
Compact (small-bore) carbon steel valves for petroleum, petrochemical and gas service.
Key requirements (5)
  • Gate, globe, check valves NPS ≤ 4 (DN 100), Class 800–4500 (compact body).
  • For instrument tubing, isolation, drains, vents in process plant.
  • Forged body construction.
  • Bolt-bonnet, welded-bonnet or pressure-sealed bonnet.
  • Hydrotest per API 598.
API 598 Valve Inspection and Testing
Edition: 10th Edition (2016) Region: USA, Global
Inspection, examination, supplementary examinations and pressure-test requirements for valves.
Key requirements (5)
  • Valve inspection and testing — covers the test requirements referenced by other valve standards.
  • Tests: shell (high-pressure water), backseat (where applicable), low-pressure pneumatic seat, high-pressure hydrostatic seat, optional high-pressure pneumatic seat.
  • Allowable leakage: zero for resilient-seated; small allowable rate for metal-seated (Table 6).
  • Test duration: minimum hold times by valve size.
  • Visual examination during pressurization.

ASME — 2 standards

ASME B16.34 Valves — Flanged, Threaded, and Welding End
Edition: 2020 Edition Region: USA, Global
Pressure-temperature ratings, dimensions, materials, NDE, marking and testing for valves.
Key requirements (7)
  • Pressure–temperature ratings for valves (steel).
  • Pressure classes: 150, 300, 400, 600, 900, 1500, 2500, 4500.
  • Body wall thickness: t = (P·d)/(2·S·E − 1.2·P) + c, plus tabulated minimums.
  • Hydrotest: shell at 1.5 × Class 100 °F rating; seat at 1.1 × Class 100 °F rating.
  • Special class allows 25% above standard rating with stricter NDE (radiography + hardness).
  • Materials per ASME II Part D allowable stress.
  • End connections: threaded, flanged, butt-weld, socket-weld.
ASME B16.10 Face-to-Face and End-to-End Dimensions of Valves
Edition: 2017 Edition Region: USA, Global
Standard face-to-face and end-to-end dimensions for valves.

BSI — 1 standard

BS 1873 Steel globe and globe stop and check valves for petroleum, petrochemical and allied industries
Edition: 1975 (largely replaced by API 623) Region: UK, Global
Legacy British globe valve standard.