Spring Loaded Safety Relief Valve
BTS-50 SERIES
Product description:
Angle Discharge, Spring Loaded, Full Lift, Semi Nozzle, Full Nozzle,Conventional type Flange End Pressure / Safety Relief Valve with Open Bonnet, Open (bolted) Cap & Plain Lever.
Design:
- BTS-50 Series Safety Relief Valves are top guided with an unobstructed seat bore.
- BTS-50 Series Safety Valves are Single Spring full lift, giving max. discharge capacity.
Features:
- High discharge capacity.
- Accurate setting for correct blow off pressure.
- “Repeatability” of spring for set / reset pressure with high accuracy.
- Mirror polished finish metal to metal seat.
- Precision lapped valves disc & seat (Nozzle).
- Stellited trims (Optional)
- Set / Reset Pressure Accuracy as per ASME / IBR code.
- Each Valve Individually tested with compressed Air.
Application:
The Safe-Flow BTS-50 Series are Certified to IBR, having adjustable blow down are ideally suitable for application on steam & hot water Boilers, Autoclaves or Steam Pipelines where blow down tolerance are critical.
Ordering / Sizing Information:
- Fluid / State
- Flow Rate
- Set Pressure
- Working Pressure
- Back Pressure
- Operating Temperature
- End Connection
Technical Specifications
| Size Range | 25 mm X 50 mm to 250 mm X 350 mm |
| Pressure Rating | 150# To 2500# BS 10 Table-H x E |
| Facing | Raise Face (R.F), Flat Face (F.F), Ring Type Joint (RTJ) |
| Body M.O.C | Carbon Steel / Alloy Steel / Stainless Steel |
| Trims | CF8 / 8M / SS 304 / 316 |
| Orifice (seat) Dia. | 9.5 mm to 190 mm |
| End Connection | Flange End & Butt Weld |
Drawing
Material Specifications
| SR.NO. | Part Name | Material |
|---|---|---|
| 1 | Body | ASTM A216 GR. WCB/ A217 GR WC6 / WC9 / A351 GR CF8 / CF8M |
| 2 | Open Bonnet | ASTM A216 GR. WCB / S.G.IRON / A217 GR WC6 / WC9 / A351 GR CF8 / CF8M |
| 3 | Open Cap | ASTM A216 GR. WCB / S.G.IRON/SS |
| 4 | Nozzle | ASTM A351 GR. CF8 / CF8M |
| 5 | Disc | SS 304 / SS 316 |
| 6 | Nozzle Ring | ASTM A351 GR. CF8 / CF8M |
| 7 | Guide | ASTM A351 GR. CF8 / CF8M |
| 8 | Stem | SS 410 |
| 9 | Lock Screw | SS 304 |
| 10 | Disc Holder | ASTM A351 GR. CF8 / CF8M |
| 11 | Adjusting Screw | SS 410 |
| 12 | Spring Washer | Mild Steel |
| 13 | Adj. Screw Nut | SS 304 / SS 410 |
| 14 | Setting Spring | Carbon Steel / Alloy Steel / SS 302 / Inconel |
| 15 | Gasket | Aramid Fiber (Non-Asbestos) |
| 16 | Fork | ASTM A216 GR. WCB / S.G. IRON/ SS |
| 17 | Lever | ASTM A216 GR. WCB / S.G. IRON/ SS |
| 18 | Stem Nut | Mild Steel |
| 19 | Studs & Nuts | A193 GR. B7 / A 194 2H |
| 20 | Thrust Bearing | Hardcrome Iron |
Dimensions (mm)
| SIZE | A ±3.0 | B ±3.0 | C ±100.0 |
|---|---|---|---|
| 25X50 | 105 | 115 | 456 |
| 40X50 | 124 | 120 | 490 |
| 40X65 | 126 | 124 | 560 |
| 40X80 | 126 | 124 | 560 |
| 50X80 | 133 | 124 | 575 |
| 65X100 | 136 | 143 | 586 |
| 80X100 | 155 | 162 | 674 |
| 100X150 | 181 | 229 | 940 |
| 150X200 | 240 | 241 | 1090 |
| 150X250 | 240 | 266 | 1090 |
| 200X250 | 276 | 280 | 1190 |
| 250X350 | 395 | 370 | 1580 |
Dimensions & weight
Coming Soon
Standard Followed
- Sizing : API 520
- Design & Mfg. : API 526
- Testing : API 527
- Code : ASME Section VIII Div. 1 / ASME Section 1
- IBR – 1950
- ANSI B 16.34
- ANSI B 16.5
- NACE MR 0175
Accessories
- Balance Bellows
- Packed Lever
- Plain Lever
- Test Gag
- Lead Seal
- Screwed Cap
- Bolted Cap