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  5. Model SW-NPT-BW-FLANGED - Sealed ...

Model SW-NPT-BW-FLANGED -Sealed Bellows Valves

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Up to class 1500. Class 2500 – ANSI B16.34. Testing according to API 598, BS 6755. Marking MSS SP25. Outside Screw and Yoke (OS&Y). Secondary stem seal by stuffing box. Self aligning packing gland in two parts. Integral backseat. Top entry type for class 1500 and 2500. Grease nipple for stem nut. Socket Weld Ends according to ANSI B16.11. Screwed Ends according to ANSI B1.20.1. Butt Welding Ends according to ANSI B16.25. Flanges according to ANSI B16.5. Ratings: According to ANSI B16.34 classes: 150,300,600,1500,2500 lbs.

According to API 602 class 800 lbs. Face to face: flanged valves according to ANSI B16.10. BW ends according to ANSI B16.10. SW and screwed ends and class 4500. Body-Bonnet joint: welded, screwed and seal welded. bolted with spiral. Port opening: full or reduced bore. Size 1/4" to 2". Globe valves with short bellow available on request. BW–FLANGED  API 602, BS 5352, NF M87.412.  RF or RTJ type. spiral-wound gasket retained type or oval ring joint gasket