ANSI 150 cast steel globe valve, 2" to 4"

A rising‑stem globe valve for throttling and isolation, in 2" to 4" (DN50 to DN100), with ANSI 150# flange ends and a body in Cast steel ASTM A216 WCB. Rated Class 150, designed and manufactured to ASME B16.4 and BS 1873, inspected and tested to API 598.

Inside, flow turns up through a seat opening, past a disc that lifts squarely off the seat, and turns down again. The stem moves the disc towards or away from the seat, so the gap changes smoothly with stem position and a flow can be set and held. That is the job a gate valve cannot do — a gate parked part open vibrates and wears its seat. The cost is pressure drop even fully open, because the path turns twice. Globe against gate.

• The catalogue states 425 °C on the 2"–4" band and 429 °C on the 2½" band, quoted as printed. Design to 425 °C, the standard figure for A216 WCB.
• Designed to BS 1873 — the British Standard for steel globe valves — with ASME B16.4 co‑cited in the catalogue, both quoted as printed. If your specification calls up a standard by name, tell us and we confirm the governing one.
• 13% chrome on the disc, not stainless. The disc is A105 faced with 13% Cr — a hard, erosion‑resistant seating face, which is what a throttling valve needs where flow is squeezed through a narrow gap. It is not corrosion protection. For that use SS316.
• Graphite packing, alloy‑steel bolting. Flexible graphite around the stem and A193 B7 / A194 2H pressure bolting. That combination is what takes this valve to 425 °C where a PTFE‑seated ball valve stops at 150.
• The 2½" band lists a 19‑item bill of materials against 21 on the main band. Both are published in full below. Order spares against the band your valve came from, not the other one.

Four angles on the same valve. Photographs of the stocked item, not renders.

2", 3" and 4" (DN50 to DN100) — 21 parts

2½" (DN65) — 19 parts

The manufacturer’s sectional drawings, one for each size band. Callout numbers correspond to the matching parts list.

• The item numbers are the manufacturer’s. They are the callout numbers from the sectional drawing, which is why a number can repeat a part name at a different position. We have left them exactly as published so a spares order matches the drawing.
• The seating surfaces are what wear. On a valve that runs part open, flow through the gap is fast, and the disc face and seat take that. They are the parts to ask about first.
• Everything here is published, not on request. If you need to know what touches your fluid, the whole list is above.

2", 3" and 4" (DN50 to DN100)

2½" (DN65)

• ⚠ Do not design to these figures. They are manufacturing proof tests well above the working rating — the shell test proves the body, the seal test proves the disc against its seat. The valve is not intended to operate there.
• Gas tightness is 0.6 MPa, the same figure across all ten variants in this range. It is the one number that does not move with class, size or material.
• The temperature ceiling is the material, not a seat insert. A globe valve seals metal to metal and packs the stem with graphite, which is why the steel variants here reach 425 °C where a PTFE‑seated ball valve stops at 150. All ten compared.

All ten, side by side: the comparison table. Other variants: ANSI 150 cast iron · ANSI 150 forged steel · ANSI 150 SS316 · JIS 10K cast iron · JIS 10K SS316 · Threaded forged steel · Threaded SS316 200 PSI · Threaded SS316 800 PSI · Weld end forged steel.

All globe valves · gate valves for straight‑through isolation · ball valves for quarter‑turn · flange end ball valves · swing check valves · Y‑strainers to keep grit off the seat · needle valves for fine control at pressure · all low pressure valves.