API · ASME · DIN · EN 規格対応の産業用バルブ
スラブゲートバルブ
スラブゲートバルブは1枚の平板ゲートをスライドさせ、全開時に滑らかなフルボアを残すため、圧力損失を最小化し、スラリーや固形物がキャビティに滞積しません。パイプライン輸送で選ばれる理由です。範囲はNPS 2"～48"（DN50～DN1200）、ASME Class 150～2500（PN16～PN420）、ボディは炭素鋼・ステンレス鋼・合金鋼・デュプレックスステンレス鋼、端接続はRF・BW・RTJ、操作は手動・空圧・電動・油圧、石油・ガス輸送用としてAPI 6D設計です。選定はピギングに対するフルボア要件、管路圧力に対するクラス、輸送流体に対するボディ合金がポイントです。ゲートバルブの一般資料は選定枠組みを補足します。絞りでなく遮断用途（中間開度では振動と侵食の恐れ）、全開時の流路抵抗はほぼゼロで軸方向の所要寸法も最小、フルポート/レデュースポート、昇降/非昇降ステム（位置表示対 天井制約）、およそ2250psi（15MPa）以上のプレッシャーシールボンネット、高温用硬質面付きねじ込み/シール溶接シートリング、両方向取付、大口径の開閉前圧力均等化バイパス弁。
次のファミリーに属する： ゲートバルブ ファミリー
最終更新： 2026-11
ファミリー仕様
| Nominal valve connection size | NPS 2"~48"(DN50~DN1200） |
|---|---|
| Pressure class / nominal rating designation | ASME CLASS 150~2500（PN16~PN420） |
| Valve body material | Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel |
| End connection types | RF, BW, RTJ |
| Operation / closure mode | Manual, Pneumatic, Electric, Hydraulic |
| Design standards | API 6D |
| applications | Oil & gas transportation |
| axial footprint | Very little space required along the pipe axis; flow hardly restricted when fully opened |
| full open flow path | No obstruction in the flow path at full open, resulting in very low flow resistance |
| duty scope | Shut-off (isolation) duty rather than flow regulation |
| partial open stability | A partially open gate can vibrate from the fluid flow depending on construction |
| bypass practice | Large valves are sometimes fitted with a small bypass valve to reduce upstream pressure before operating the main gate |
| pressure seal bonnet note | Pressure-seal bonnet construction adopted for high pressure service, typically in excess of 2250 psi (15 MPa) |
| stem patterns note | Rising stems give visual position indication; non-rising stems suit installations with limited vertical space |
| nonrising stem space note | Non-rising stems used where vertical space is limited |
| trim material options | Commonly cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels and forged steels |
| bidirectional flow | Bidirectional - can be installed and used in either flow direction |
| throttling limit | Not suitable for regulating or throttling flow |
| seat construction | Seats integral with the body or seat-ring type; rings threaded or pressed in and seal welded (recommended for higher temperature); hard-faced rings available |
| full port bore | Full-port builds pass a full line-size bore for minimum pressure drop; reduced-port builds have slightly higher drop |
| osy stem advantage | Outside-screw-and-yoke rising stems keep stem threads out of the flow medium (not subject to corrosion/erosion) |
| peer size range conduit gate | NPS 1.13/16 –16.3/4 (DN 46-425) NPS 2- 36 (DN 50-900) |
| peer pressure rating conduit gate | ASME 150 - ASME 2500 API 5000-API 10000 |
| temperature range conduit gate | -150 to 662°F (-101 to 350°C) |
| peer end connections conduit gate | RF, RTJ as per B16.5 &B16.47 BW, Butt Welded as per B16.25 Hub connection 6B, 6BX as per API6A |
| conduit gate body one piece | Forged or cast one-piece |
| conduit gate seat hardfacing | Metal-seated with hardfacing on wedge and Seats |
| conduit gate secondary seal graphite | Secondary seals in Pure Graphite |
| conduit gate stem safety features | Anti-Static Device Anti Blow out stem |
| conduit gate body cavity relief | Relief valve in the body cavity |
| conduit gate fully piggable | Fully piggable design |
| conduit gate fail open operation | In normal operation, line fluid fills the cavity and the gate is lifted by the pressure generated from the flow path assisting the actuator spring to open the valve, resulting in a fail-open configuration. |
| conduit gate rising stem under line pressure | The valve design includes a rising stem which accommodates the upward and downward movements of the gate allowing it to open and close under the line pressure. |
| conduit gate testing standards | Compliance with API 6D & ISO 5208 & API 598 inspection and testing |
| conduit gate fire safe certification | Fire safe and fire tested as per API 6FA/ 607 |
| conduit gate fugitive emission standard | Fugitive Emission as per ISO15848 |
| conduit gate api6a psl levels | Product specification levels (PSL 1, 2, 3, 3G and 4) |
| conduit gate piggable fully open only | Slab through conduit gate valves are piggable in the fully open position and generate pressure drop across the valve equal to the inside diameter of the connecting pipe. |
| peer design standards conduit gate | Slab through conduit gate valves are designed and manufactured in accordance with API 6D and API 6A standards and specifically for on-off services. |
| conduit gate top entry inline service | These valves are a top entry design with floating seats, and are serviceable while installed in the flow line. |
| conduit gate api6d monogram | They are manufactured to API-6D requirements and carry the API-6D monogram audited and issued by the American Petroleum Institute. |
| conduit gate bore matches pipeline id | The through-conduit design has a smooth, continuous bore that matches the internal diameter of the pipeline when fully open. |
| conduit gate dbb bidirectional piggable | Both types are full bore, bi-directional, capable of double block and bleed sealing, and ideal for pigging operations. |
| conduit gate body thermal relief bleed | When body pressure exceeds line pressure from causes such as thermal expansion, the upstream seat is forced back into its recess and the excess pressure in the body is bled between the seat and the gate into the line. |
| conduit gate double seal sequence | Thus, a double seal is formed; first, a plastic-to-metal seal then metal-to-metal. |
| conduit gate spring energized floating seats | These valves feature floating metal seat rings equipped with soft face seals, held against the gate by a dynamically energized spring. |
| conduit gate emergency sealant injection | Should a seat fail, emergency sealant can be pumped directly into a groove on the seat face through body fittings. |
| conduit gate fire safe graphite option | For added safety, an optional fire-safe design ensures a temporary seal via graphite wire rod and metal-to-metal contact between the seat and gate, even if soft seals are compromised. |
| conduit gate low emission packing api622 | API-622 qualified low-emission braided graphite packing. |
| conduit gate packing in service adjustment | A unique internal retainer allows in-service adjustment while the valve is under pressure, significantly extending packing life and eliminating downtime. |
| conduit gate enp surface coating | A heavy 3 Mil ENP coating protects surfaces from damage and corrosion. |
| peer size range tcsgv | 4"-30" (And more upon request) |
| peer pressure class tcsgv | ASME B16.34 150# to 1500# |
| peer seating material tcsgv | Carbon steel ENP plated (as standard) |
| peer design standard conduit gate asme8 | API 6D - ASME VIII-1/2 |
| conduit gate isolation features dbb dib | API 6D Isolation Features: DBB-DIB_1-Self relieving-Block and bleed |
| conduit gate seat primary metal secondary soft | Seat: Primary metal - secondary soft |
| conduit gate pressure envelope oring graphite | Pressure Envelope: o-ring and fire safe graphite |
| conduit gate drain vent grease fittings | Fittings: Drain - Vent, Stem and seat grease injectors |
| special features | Through conduit valve type to minimize pressure drops, Prevents accumulation of external materials such as slurries into the valve cavity |
範囲と出所の注記
| bonnet construction | Bonnet construction: the referenced pressure-seal bonnet threshold (typically above 2250 psi / 15 MPa) implies bolted-bonnet executions below that pressure, while the tenant range spans ASME Class 150 to 2500 - the tenant upper band relies on pressure-seal builds not itemized per class. |
|---|---|
| bore flow framing | Bore/flow framing: generic references describe full-port builds as having no obstruction in the flow path, while the tenant page does not state whether all sizes are full port - reduced-port executions would carry slightly higher pressure drop. |
| stem pattern split | Stem pattern split: rising stems give visual position indication and non-rising stems save vertical space, but the tenant operation list (manual/pneumatic/electric/hydraulic) does not break out which stem pattern each actuation option uses. |
注文と書類
書類
お問い合わせの際に必要な書類セットをお知らせください——この型番仕様の典型的な項目（材質証明書、記載の検査規格に基づく試験報告書、寸法図）は、見積時に確認のうえ供給されます。
お見積り
見積可能なお問い合わせには次の事項をご記入ください：呼び径と圧力レーティング、ボディ・シート材質の希望、接続方式、操作方式、温度を含む使用流体。このページの典型値はベンチマーク参考範囲です。拘束力のある値は見積時に確定します。
サンプルと供給
供給条件、発注数量、納期は注文ごとに協議します——お問い合わせの際に納入国と希望スケジュールをお知らせください。
保管と輸送
バルブはシート・シールを紫外線、オゾン、変形から保護して保管し、据付まで端面保護カバーを取り付けたままにしてください。エラストマーまたは PTFE シートの仕様では、屋外での長期保管を避けてください——シート材料は直射日光と凍結条件で最も劣化が早くなります。
よくある質問
スラブゲートバルブの見積依頼には何を含めるべきですか？
適用規格とクラス、呼びサイズ、ボディおよびシート材、使用媒体と温度、納入先——欠落している項目は見積の過程で確認します。
スラブゲートバルブにはどのサイズと圧力等級がありますか？
このバルブの検証済みサイズと圧力等級範囲はまだ本ページに掲載されていません——お客様の使用条件に適したサイズと圧力等級は見積の過程でご提案し、確認します。使用条件を問い合わせに添えていただければ、選定結果を見積書に記載します。
スラブゲートバルブにはどのボディ材質がありますか？
このバルブの検証済みボディ材質範囲はまだ本ページに掲載されていません——お客様の使用条件に適したボディ材質は見積の過程でご提案し、確認します。使用条件を問い合わせに添えていただければ、選定結果を見積書に記載します。
スラブゲートバルブ の見積依頼
こちらからご要望をご提出ください——見積に直結するお問い合わせには、適用規格とクラス、口径、材質、流体、温度、納入先をご記入ください.
お客様の情報の取り扱いについては、プライバシー通知をご覧ください。