Fine throttling and positive shut-off, cast for higher-temperature duty. Metal-seated BS 1873 globe valves in carbon and stainless steel, with a zero-leak version for critical isolation.
| Pressure class | Size range | |
|---|---|---|
| Class 150 | 1″ to 30″ | DN 25–750 |
| Class 300 | 1″ to 24″ | DN 25–600 |
| Class 600 | 1″ to 12″ | DN 25–300 |
| Class 800 | ½″ to 2″ | DN 15–50 |
Cast, machined and assembled to a controlled specification, from the one-piece OS&Y bonnet and fully-guided disc to the hardfaced seats and fully-encased gasket.
Cast with uniform wall thickness, smooth flowing contours and generous fillet radii to prevent stress concentrations. Designed for structural stability, mechanical strength and safe weldability. Precision machined.
Cast steel OS&Y type. The one-piece design aligns the stem accurately, eliminating excessive weight and unnecessary working parts. Every bonnet carries a stainless-steel bushing that guides the stem and backseats the valve when wide open under pressure.
The fully-guided disc ensures no chatter on the seat face during closure and eliminates undue side thrust on the stem.
Hardfaced with CA15 / Stellite for longer seat life. Suitable for steam, oil and gas at higher temperatures. Seating faces are ground and lapped.
Heat-treated 13% Cr stainless steel with a precision square thread. A self-adjusting radial backseating shoulder engages the backseat in the bonnet. A ground, mirror-like finish gives long packing life, low friction and no leakage.
The gasketed joint is critical: its compression is better controlled in a fully enclosed cavity, giving a strong, leak-proof body-to-bonnet joint.
On every valve the stuffing box is deep, finished to a high quality and holds high-pressure or high-temperature packing rings for tightness and long packing life. Asbestos-free graphoil packing is available.
Flanges on Class 150 and Class 300 valves have a 1/16″ raised face with a serrated finish.
One arrangement in three standard builds, carbon steel through to 316 stainless. Also available in a zero-leak version.
| # | Part | Carbon steelWCB | Stainless 304CF8 | Stainless 316CF8M |
|---|---|---|---|---|
| 1 | Body | WCB | CF8 | CF8M |
| 2 | Bonnet | WCB | CF8 | CF8M |
| 3 | Disc | CA15 | CF8 | CF8M |
| 4 | Seat | CA15 / Stellite-6 | CF8 | CF8M |
| 5 | Stem | SS410 | SS304 | SS316 |
| 6 | Stem nut | Gun metal | SS304 | SS316 |
| 7 | Backseat | SS410 | SS304 | SS316 |
| 8 | Gland | WCB | CF8 | CF8M |
| 9 | Packings | Graphited asbestos | P.T.F.E. | P.T.F.E. |
| 10 | Bolts | A 193-B7 | B8 | B8M |
| 11 | Nuts | A 194-2H | A 194-8 | A 194-8M |
| 12 | Handwheel | CI | CI | CI |
Asbestos-free graphoil packing is available. Also available in a zero-leak version.
| Test | Class 150 | Class 300 | Testing medium |
|---|---|---|---|
| Shell | 450 psig· 30 bar | 1125 psig· 77 bar | Kerosene / Water |
| Backseat | 325 psig· 22 bar | 835 psig· 57 bar | Kerosene / Water |
| Seat leak | 325 psig· 22 bar | 825 psig· 57 bar | Water |
Seat-leak air test provided on request.
Standard face-to-face and flange data for the Class 150 cast range. Full metric (DIN) data is on the GAD tab.
| Bore Ø | Face-to-face | Flange Ø | Flange thk | P.C.D. | Raised face Ø | No. holes | Hole Ø |
|---|---|---|---|---|---|---|---|
| 1″ | 5 | 4 1/4 | 7/16 | 3 1/8 | 2 | 4 | 5/8 |
| 1½″ | 6 1/2 | 5 | 9/16 | 3 7/8 | 2 7/8 | 4 | 5/8 |
| 2″ | 8 | 6 | 5/8 | 4 3/4 | 3 5/8 | 4 | 3/4 |
| 2½″ | 8 1/2 | 7 | 11/16 | 5 1/2 | 4 1/8 | 4 | 3/4 |
| 3″ | 9 1/2 | 7 1/2 | 3/4 | 6 | 5 | 4 | 3/4 |
| 4″ | 11 1/2 | 9 | 15/16 | 7 1/2 | 6 3/16 | 8 | 3/4 |
| 5″ | 14 | 10 | 15/16 | 8 1/2 | 7 5/16 | 8 | 7/8 |
| 6″ | 16 | 11 | 1 | 9 1/2 | 8 1/2 | 8 | 7/8 |
| 8″ | 19 1/2 | 13 1/2 | 1 1/8 | 11 3/4 | 10 5/8 | 8 | 7/8 |
The specifications and data in this leaflet are as accurate as possible; improvements and modifications from time to time may necessitate change in design and dimensions.
Every AEW globe valve ships to a controlled arrangement drawing. One-piece OS&Y bonnet, fully-guided disc, hardfaced seats, self-adjusting backseat, each part numbered, each material specified.
Materials as drawn, for the carbon-steel (WCB) build. Full CF8 / CF8M equivalents are on the Info tab.
Complete face-to-face, flange and bolting data for the Class 150 cast range, in millimetres, taken from arrangement drawing AEW/GLV/150.
| DN · mm | NPS · in | Face-to-face | Flange Ø | Bolt circle | No. × hole Ø | Flange thk |
|---|---|---|---|---|---|---|
| 25 | 1″ | 127 | 110 | 79.4 | 4 × 15.87 | 12.7 |
| 40 | 1½″ | 165.1 | 125 | 98.4 | 4 × 15.87 | 15.9 |
| 50 | 2″ | 203.2 | 150 | 120.7 | 4 × 19.05 | 17.5 |
| 65 | 2½″ | 215.9 | 180 | 139.7 | 4 × 19.05 | 20.7 |
| 80 | 3″ | 241.3 | 190 | 152.4 | 4 × 19.05 | 22.3 |
| 100 | 4″ | 292.1 | 230 | 190.5 | 8 × 19.05 | 22.3 |
| 125 | 5″ | 355.6 | 255 | 215.9 | 8 × 22.22 | 22.3 |
| 150 | 6″ | 406.4 | 280 | 241.3 | 8 × 22.22 | 23.9 |
| 200 | 8″ | 495.3 | 345 | 298.5 | 8 × 22.22 | 27 |
All dimensions in millimetres, as per arrangement drawing AEW/GLV/150. Face-to-face per ASME B16.10; flange drilling per ASME B16.5; hole Ø is the bolt-hole diameter. Class 150 covers DN25–200.
The full globe-valve catalogue and the Class 150 arrangement drawing, as print-ready PDFs for your file or tender.
Design features, materials of construction, test pressures and the full dimensional data for the BS 1873 cast globe range.
Cast, machined, and shipped.Made at the Shahibaug works in Ahmedabad, trusted on GAIL, BARC, Adani and Asian Paints lines.
Send us size, class, material and quantity, and we’ll respond with a quotation and the arrangement drawing for your file.
or call +91 98250 13325
