Sigma™ and Sigma EXL™
高性能反転ドーム形/逆作動破裂板
Sigma Disk
Sigma EXL Disk
性能
- 気相・液相・混合流体兼用
- 破裂圧力の95％まで運転可能（破裂誤差下限の95％まで）
- 破片飛散なし、安全弁一次側設置の推奨製品
- ダメージ安全率≤１（ダメージがある場合表示破裂圧力の１倍以下で破裂する）
- 周期的に圧力変動する運転状況に適している
- 真空耐性あり
- ASME “UD”スタンプ対応（製造範囲0%/-5%選定）
- 圧力機器指令 “CE” マーク及びその他国際証書対応
- BS&B 独占技術; アメリカ特許9,168,619/国際特許申請
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Sizes & Pressures
Sigma™ and Sigma EXL™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)
| Disk Size | Nickel Alloy 200 | Monel® Alloy 400 | Inconel® Alloy 600 | Hastelloy® Alloy C-276 | 316SS | ||||||||||||||||
| in | mm | psig | barg | psig | barg | psig | barg | psig | barg | psig | barg | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | min | max | min | max | min | max | min | max | min | max | min | max | min | max | min | max | ||
| 1 | 25 | 35 | 500 | 2.41 | 34.47 | 58 | 500 | 4.00 | 34.47 | 50 | 500 | 3.45 | 34.47 | 55 | 500 | 3.79 | 34.47 | 35 | 500 | 2.41 | 34.47 |
| 1.5 | 40 | 30 | 400 | 2.06 | 27.58 | 45 | 400 | 3.10 | 27.58 | 45 | 400 | 3.10 | 27.58 | 45 | 400 | 3.10 | 27.58 | 30 | 400 | 2.07 | 27.58 |
| 2 | 50 | 25 | 400 | 1.72 | 27.58 | 30 | 400 | 2.07 | 27.58 | 30 | 400 | 2.07 | 27.58 | 30 | 400 | 2.07 | 27.58 | 25 | 400 | 1.72 | 27.58 |
| 3 | 80 | 20 | 400 | 1.38 | 27.58 | 22 | 400 | 1.52 | 27.58 | 22 | 400 | 1.52 | 27.58 | 25 | 400 | 1.72 | 27.58 | 20 | 400 | 1.38 | 27.58 |
| 4 | 100 | 16 | 400 | 1.10 | 27.58 | 18 | 400 | 1.24 | 27.58 | 18 | 400 | 1.24 | 27.58 | 20 | 400 | 1.38 | 27.58 | 16 | 400 | 1.10 | 27.58 |
| 6 | 150 | 15 | 225 | 1.03 | 15.51 | 15 | 225 | 1.03 | 15.51 | 15 | 225 | 1.03 | 15.51 | 20 | 225 | 1.38 | 15.51 | 15 | 225 | 1.03 | 15.51 |
| 8 | 200 | 15 | 125 | 1.03 | 8.62 | 15 | 125 | 1.03 | 8.62 | 15 | 125 | 1.03 | 8.62 | 20 | 125 | 1.38 | 8.62 | 15 | 125 | 1.03 | 8.62 |
| 10 | 250 | 15 | 100 | 1.03 | 6.89 | 15 | 100 | 1.03 | 6.89 | 15 | 100 | 1.03 | 6.89 | 20 | 100 | 1.38 | 6.89 | 10 | 100 | 0.69 | 6.89 |
| 12 | 300 | 15 | 75 | 1.03 | 5.17 | 15 | 75 | 1.03 | 5.17 | 15 | 75 | 1.03 | 5.17 | 20 | 75 | 1.38 | 5.17 | 10 | 75 | 0.69 | 5.17 |
NOTE: Hastelloy® is a trademark of Haynes International Inc. Monel® and Inconel® are registered trademarks of Special Metals Corporation and its subsidiaries.
Burst Tolerance
| Marked Burst Pressure | Burst Tolerance |
|---|---|
| ≤ 40 psig (2.76 barg) | ± 2 psig (0.138 barg) |
| > 40 psig (2.76 barg) | ± 5% |
Accessories
BS&B supplies many of the accessories required to safely and conveniently install our overpressure relief devices and complementary products. Through our professional team and global network of sales engineers and procurement personnel, we are able to provide the highest quality accessory products to meet your installation requirements.
Saf-T-Change Quick Disk Replacement (QDR)
After activation, the replacement disk is quickly slid into place. Saving hours of lost production due to blown rupture disks.
Tell-Tale Assemblies & Excess Flow Valves/Gauges
A gauge tap in the outlet flange of the safety head may be considered when the safety head is installed in a vertical position.
Spare Safety Heads & Cap Screws
Jackscrews
When activated, the jackscrews effectively separate the flanges, providing adequate clearance to remove or insert a safety head and external gaskets.
Lifting Lug Eye Bolts
Eye bolts are recommended when weight and/or accessibility is a factor in lifting safety heads.
Baffle Plate
When a safety head is free-vented to atmosphere, a baffle plate may be considered to disperse overpressure and absorb recoil.
Product Literature
Sizes & Pressures
Sigma™ and Sigma EXL™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)
| Disk Size | Nickel Alloy 200 | Monel® Alloy 400 | Inconel® Alloy 600 | Hastelloy® Alloy C-276 | 316SS | ||||||||||||||||
| in | mm | psig | barg | psig | barg | psig | barg | psig | barg | psig | barg | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | min | max | min | max | min | max | min | max | min | max | min | max | min | max | min | max | ||
| 1 | 25 | 35 | 500 | 2.41 | 34.47 | 58 | 500 | 4.00 | 34.47 | 50 | 500 | 3.45 | 34.47 | 55 | 500 | 3.79 | 34.47 | 35 | 500 | 2.41 | 34.47 |
| 1.5 | 40 | 30 | 400 | 2.06 | 27.58 | 45 | 400 | 3.10 | 27.58 | 45 | 400 | 3.10 | 27.58 | 45 | 400 | 3.10 | 27.58 | 30 | 400 | 2.07 | 27.58 |
| 2 | 50 | 25 | 400 | 1.72 | 27.58 | 30 | 400 | 2.07 | 27.58 | 30 | 400 | 2.07 | 27.58 | 30 | 400 | 2.07 | 27.58 | 25 | 400 | 1.72 | 27.58 |
| 3 | 80 | 20 | 400 | 1.38 | 27.58 | 22 | 400 | 1.52 | 27.58 | 22 | 400 | 1.52 | 27.58 | 25 | 400 | 1.72 | 27.58 | 20 | 400 | 1.38 | 27.58 |
| 4 | 100 | 16 | 400 | 1.10 | 27.58 | 18 | 400 | 1.24 | 27.58 | 18 | 400 | 1.24 | 27.58 | 20 | 400 | 1.38 | 27.58 | 16 | 400 | 1.10 | 27.58 |
| 6 | 150 | 15 | 225 | 1.03 | 15.51 | 15 | 225 | 1.03 | 15.51 | 15 | 225 | 1.03 | 15.51 | 20 | 225 | 1.38 | 15.51 | 15 | 225 | 1.03 | 15.51 |
| 8 | 200 | 15 | 125 | 1.03 | 8.62 | 15 | 125 | 1.03 | 8.62 | 15 | 125 | 1.03 | 8.62 | 20 | 125 | 1.38 | 8.62 | 15 | 125 | 1.03 | 8.62 |
| 10 | 250 | 15 | 100 | 1.03 | 6.89 | 15 | 100 | 1.03 | 6.89 | 15 | 100 | 1.03 | 6.89 | 20 | 100 | 1.38 | 6.89 | 10 | 100 | 0.69 | 6.89 |
| 12 | 300 | 15 | 75 | 1.03 | 5.17 | 15 | 75 | 1.03 | 5.17 | 15 | 75 | 1.03 | 5.17 | 20 | 75 | 1.38 | 5.17 | 10 | 75 | 0.69 | 5.17 |
NOTE: Hastelloy® is a trademark of Haynes International Inc. Monel® and Inconel® are registered trademarks of Special Metals Corporation and its subsidiaries.
Burst Tolerance
| Marked Burst Pressure | Burst Tolerance |
|---|---|
| ≤ 40 psig (2.76 barg) | ± 2 psig (0.138 barg) |
| > 40 psig (2.76 barg) | ± 5% |
Accessories
BS&B supplies many of the accessories required to safely and conveniently install our overpressure relief devices and complementary products. Through our professional team and global network of sales engineers and procurement personnel, we are able to provide the highest quality accessory products to meet your installation requirements.
Saf-T-Change Quick Disk Replacement (QDR)
After activation, the replacement disk is quickly slid into place. Saving hours of lost production due to blown rupture disks.
Tell-Tale Assemblies & Excess Flow Valves/Gauges
A gauge tap in the outlet flange of the safety head may be considered when the safety head is installed in a vertical position.
Spare Safety Heads & Cap Screws
Jackscrews
When activated, the jackscrews effectively separate the flanges, providing adequate clearance to remove or insert a safety head and external gaskets.
Lifting Lug Eye Bolts
Eye bolts are recommended when weight and/or accessibility is a factor in lifting safety heads.
Baffle Plate
When a safety head is free-vented to atmosphere, a baffle plate may be considered to disperse overpressure and absorb recoil.
Product Literature
概要
Sigma EXL™ および Sigma™ 反転型破裂板は、破裂板圧力解放装置の中で得られる最も高い運動圧力を提供するために開発されました。Sigma EXL™/Sigma™ 破裂板とSRB-7RS™ ホルダーを独自の破裂板、ホルダー設計の反転型破裂板技術の精度と信頼性と組合わせることで、Sigma EXL™ / Sigma™ 破裂板は刻印破裂圧力の95%または、最小設定圧力のS100% (CEN ISO 4126-2)までの運転が可能です。Sigma EXL™ / Sigma™ 破裂板は、ドーム型の特性であるSAF技術（Structual Apex Forming、構造的向点成形加工）を採用し、破裂圧力の精度を高めています。