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プランジャー制御弁
プランジャー制御弁は、流線形の一体ボディ内でスロット付きポートに対して動く円筒プランジャーにより大流量の水を調整し、送水・浄水・水力発電ラインでキャビテーションなしの調整を実現します。範囲は公称圧力PN10～PN100（Class 150/300）、公称径DN150～DN2200、ボディはダクタイル鋳鉄EN-GJS-400-15+1.4301ステンレス鋼ピストン+青銅ガイドレール、内外エポキシ塗装はEN 14901-1+A1準拠、ピストンの噛み込みを防ぐ硬化青銅ガイド、堆積物に強いクアッドリングシール、リニア制御特性のための自己ロック式ウォームギア駆動です。選定は差圧水頭とキャビテーションマージン、水道網が要求する制御曲線、駆動/位置表示のパッケージです。複数資料は運用枠組みを補足します。シャフト・ロッド・クランク機構によるプランジャーの軸方向移動、流速を上げ圧力を下げる断面積漸減のリング状チャンバー、キャビテーション気泡を下流出口フランジ中心へ向ける設計、上下流バランスによる低トルク操作、以前のバルブがキャビテーションと振動で被害を受けた末端設備で36インチ仕様が騒音95dBAに低減した現場実績、A536ダクタイル鋳鉄ボディ+ステンレスプランジャー+EPDMシールの参照材質表、必要流量に対する上下流圧力によるリング選定、ハンドホイール/ギアボックスまたは電動駆動。
次のファミリーに属する： プランジャーバルブ ファミリー
最終更新： 2026-11
ファミリー仕様
| Nominal valve connection size | DN 150 … 2200 |
|---|---|
| Nominal valve connection size | DN100 to DN2000 |
| Pressure class / nominal rating designation | PN 10 … 100, class 150 / 300 |
| Valve body material | EN-GJS-400-15 (GGG-40) ductile iron |
| Valve body material | Ductile Iron, Stainless Steel |
| piston material | 1.4301 stainless steel |
| guide rails material | bronze |
| coating | inside and outside epoxy coating (EN 14901-1+A1) |
| guides | Hard-faced bronze guides |
| seal | Quad-ring seal |
| Drive arrangement | self-locking worm gear unit with a constant transmission ratio for a linear control curve |
| cavitation problem context | Reference field context: plug valves at a water authority terminal station could not withstand excessive cavitation and vibration caused by extreme pressure differences |
| selection basis ref | Reference field selection: utility chose the plunger valve for its ability to control flow under high pressure while minimizing cavitation and vibration |
| noise result ref | Reference field result: maximum noise level of 95 dBA met the specification requirement, much lower than the previous valves |
| installed base ref | Reference installed base: a water authority has put more than 30 pieces of plunger valve into operation across its transmission system |
| operating principle ref | This regulation is achieved by the axial movement of a plunger, operated by a shaft - rod - crank mechanism. |
| ring chamber flow path | The water flow is channelled through a ring-shaped chamber around the central body of the valve. |
| chamber geometry effect | The cross section of this chamber reduces constantly from the inlet to the outlet of the valve, causing rise in the flow velocity and drop of the pressure. |
| cavitation bubble direction | This ideal geometric shape protects the pipe from cavitation bubbles, which are directed towards the center of the down-stream outlet flange. |
| low torque balance | A perfect balance between the upstream and downstream chambers allows the plunger flow control valve to be operated under low torque levels. |
| peer size pressure range | Peer execution range: DN80 to DN1800 at PN10, PN16, PN25 and PN40 |
| air application ref | Peer air-application execution: DN80 to DN600 at PN10 and PN16 |
| peer materials list | Peer material list: ductile iron ASTM A536 Grade 60-40-18 body, stainless steel plunger, quad O-ring with EPDM sealing ring, stainless retaining ring |
| peer feature list | Peer feature list: superior linear flow characteristics, drip-tight shut-off, cavitation prevention with vibration elimination, low operating torque |
| peer sizes flanges | Peer execution sizes: 6 in. to 78 in., ANSI Class 150 or 300 flanges |
| bearing isolation | Long service life is guaranteed as the bearings do not come into contact with the medium. |
| center guided flow | The flow is always guided to the center of the connecting pipe where cavitation bubbles will be formed and restored without damaging the equipment. |
| ring selection basis | Upstream and downstream pressure, in combination with required flow rate, define the type of ring to be used in order to have excellent cavitation behavior and minimum pressure loss. |
| applications ref | The plunger valve is suitable for use in water treatment, water distribution, in dams, power plants and in several other industries. |
| actuation options ref | Plunger valves can be operated with hand wheel and gearbox or with electric actuator. |
| peer pressure rating extended | Flanges: UNI EN 1092-2 PN 10-16-25-40-64 |
| peer design standards | Design EN1074-1, EN 1074-5, EN 1092-2 |
| peer installation orientation | Installation: horizontal |
| peer body material gjs500 | body ductile iron GGG50, EN-GJS-500 |
| peer stem material aisi420 | stem stainless steel aisi 420 |
| peer quiet performance | Spindle control valves have excellent performance, silent, avoiding water hammer and the phenomenon of cavitation. |
| peer throttle characteristic | Low pressure drops are recorded for openings greater than 50%, high pressure drops for openings less than 40%. |
| peer actuation executions | Executions on request with manual gearbox, electric motor, hydraulic cylinder with or without counterweight |
| peer potable coating | Epoxy painting suitable for potable drinking water applications |
| peer fluid temperature limit | Needle valve PN10/16 for pressure and flow control applications, for water and neutral liquids to max. 70° C |
| peer gearbox modulating life | Gearbox with bronze worm wheel for continuously modulating duty, minimum 1.2 million modulating steps |
| peer flow path symmetry | Symmetrical flow path ensures evenly distributed flow around the entire seat in any open position |
| peer guide rail count | 4 - 6 guide rails ensure very low vibration |
| peer piston seal placement | Main seal mounted on the piston as opposed to on the seat preventing abrasion when fitted with anti cavitation trim |
| peer gasket material | Gaskets in polyurethane for high resistance to abrasion |
| peer coating thickness | All iron parts coated with min. 250 μm fusion bonded epoxy, blue RAL 5005 |
| peer drive shaft sealing | Double O-rings sealed drive shaft |
| peer seal life design | Maximum service life due to cavitation-free location of the seal ring |
| peer drive shaft bearing | Drive shaft supported on both sides in self-lubricating, maintenance-free bushings |
| peer piston guides finish | Wear- and corrosion-resistant, bronze weld overlay-finished piston guides |
| peer seal replacement | No special tools required for seal ring replacement |
| peer flow guiding design | Optimized body design for better flow guiding, minimum head losses in full open position |
| front body materials | Ductile Iron |
| Seat material | Stainless Steel |
| piston materials | Stainless Steel |
| back body materials | Ductile Iron |
| shaft materials | Stainless Steel |
| bushing materials | Bronze |
| gland materials | Ductile Iron |
| o ring materials | NBR |
| Working temperature (source-defined) | Up to 120 C |
| Pressure Rating | PN10, PN16, PN25 |
| Connection (source-defined) | Flange |
| operation options | Gear operated, electric, pneumatic actuated |
| pin materials | Steel |
| lever materials | Stainless Steel |
| clip materials | Stainless Steel |
| bottom cover materials | Ductile Iron |
| side cover materials | Ductile Iron |
| key materials | Steel |
| inner bushing materials | PTFE |
| bolting materials | Stainless Steel |
範囲と出所の注記
| size pressure span | Size/pressure span: peer executions list DN80-1800 at PN10-40 and 6"-78" ANSI Class 150/300, while the tenant covers DN150-2200 at PN10-100 (Class 150/300) - peer extends below the tenant DN150 floor, tenant extends above the peer PN40 ceiling. |
|---|---|
| seal trim | Seal trim: peer material lists pair a quad O-ring with an EPDM sealing ring on a stainless plunger, while the tenant specifies a deposit-tolerant quad-ring seal with hard-faced bronze guides - EPDM sealing-ring detail is absent from the tenant list. |
| service scope | Service scope: peer pages list an air-application execution (DN80-600, PN10-16) alongside water duty, while the tenant page frames the plunger control valve for water transmission, treatment and hydropower only - air service is outside the tenant framing. |
| noise evidence | Noise evidence: the referenced field case quantifies 95 dBA as the achieved noise level after plunger valves replaced troublesome plug valves, while the tenant page claims cavitation-free modulation without a quantified noise figure. |
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
プランジャー制御弁はどのような材質で提供されますか？
公開仕様にはpiston material：1.4301 stainless steelが記載されています。特定のサイズ・圧力等級での材質の供給可否は見積時に確認します。
プランジャー制御弁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。
プランジャー制御弁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。
プランジャー制御弁 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。