Spirax Sarco Spirax Sarco BSA6T Globe Valve Bellows Sealed Globe Valve
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Description
Spirax Sarco BSA and BSAT bellows sealed globe valves with double bellows seal are designed for use in steam, gas, liquid, condensate and water systems. The standard series BSAT has a throttled spool and stem locking device, the optional series BSA has a flat spool. The products comply with the European Pressure Equipment Directive 97/23/EC and some models are available with EN 10204 3.1 certificate.
Product weight (approximate) kg
caliber | BSA2 BSA2T | BSA3 (DIN) | bsa3 (ansi) ansi 150 | bsa3 ansi 300 jis/ks 20k | BSA6T PN40 |
---|---|---|---|---|---|
DN15 | 4 | 4 | 5 | 6 | 4 |
DN20 | 4 | 5 | 6 | 7 | 5 |
DN25 | 5 | 6 | 8 | 9 | 6 |
DN32 | 7 | 8 | - | - | 8 |
DN40 | 10 | 11 | 10 | 11 | 11 |
DN50 | 12 | 14 | 12 | 15 | 14 |
DN65 | 16 | 19 | - | - | 19 |
DN80 | 21 | 26 | 25 | 29 | 26 |
DN100 | 36 | 44 | 41 | 49 | 44 |
DN125 | 52 | 64 | - | - | - |
DN150 | 75 | 88 | - | 94 | - |
DN200 | 145 | - | - | - | 193 |
Sealing Grade
Spool-seat sealing in accordance with EN 12266 - 1 Class A and ISO 5208 Class A. BSA3 (ANSI) sealing class in accordance with API 598 zero leakage.
material (that sth is made of)
- BSA6T Material
Item Part BSA6T 1 valve body Stainless steel EN 10213 1.4408 or STM A351 CF8M 2 bonnet Stainless steel EN 10213 1.4581 3 Seat Stainless steel EN 10213 1.4408 or STM A351 CF8M 4 compact disc DN15 - DN40: stainless steel EN 10088 1.4571; DN50 - DN100: stainless steel EN 100222 1.4571 5 bellow Stainless steel DIN 17440 1.4571 6 tappet Stainless steel EN 10088 1.4571 7 handwheels Pressed steel BS 1449 CR4 8 Stem packing plumbago 9 Bonnet bolts Stainless steel A4 - 70 10 Bonnet Nut Stainless steel A4 11 Body/Bonnet Gasket Stainless steel reinforced flake graphite 12 locknut DN15 - DN80: steel M8×14mm A2 - 70; DN100 - DN150: steel M8×20mm A2 - 70; DN200 - DN250: steel M12×20mm A2 - 70
Stroke Limit for Throttle Models
Protective covers BSA2T and BSA3T have a threaded hole in the handwheel nut for mounting a travel limiter. Customers supply their own standard bolts and nuts from the table below.
caliber | hexagonal bolt |
---|---|
DN15 - DN80 | M8×50mm |
DN100 - DN150 | M12×75mm |
DN200 - DN250 | M12×100mm |
The handwheel nut on the BSA6T also has a threaded hole for the stroke limiter. Customer supplied standard bolts and nuts are the same as above.
Valve body design conditions
- BSA2T and BSA2
Valve body design conditions | PN16 | PN25 |
---|---|---|
PMA - Maximum Allowable Pressure | 16 bar g | 25 bar g |
TMA - Maximum Allowable Temperature | 350 °C | 350 °C |
PMO Maximum Working Pressure under Saturated Steam | 14.7 bar g | 22.3 bar g |
TMO Maximum Operating Temperature (Soft Seat) | 230 °C | 230 °C |
TMO Maximum Operating Temperature (Metal Seat) | 350 °C | 350 °C |
Minimum working temperature | -10 °C | -10 °C |
Design maximum cold hydraulic test pressure | 24 bar g | 38 bar g |