Seawater Service Dual Disc Check Valve

Valve Type Double Plate Wafer Check Valve (Dual Plate Check Valve)
Nominal Size DN300 (12 inch)
Pressure Rating 150 LB (Class 150)
End Connection Wafer Type (Fits between ASME B16.5 Flanges)
Design Structure Dual Plate / Non-Slam
Medium Water, Oil, Gas, and Mild corrosive media

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Description

TECHNICAL DATA SHEET

Double Plate Wafer Check Valve

General Information

Item	仕様
バルブタイプ	Double Plate Wafer Check Valve (Dual Plate Check Valve)
公称サイズ	DN300 (12 inch)
圧力定格	150 LB (Class 150)
End Connection	Wafer Type (Fits between ASME B16.5 Flanges)
Design Structure	Dual Plate / Non-Slam
Medium	Water, Oil, Gas, and Mild corrosive media
Operating Temp.	-20°C to +120°C (-4°F to 248°F)

Bill of Materials (Materials of Construction)

Part Name	材料	Material Standard (ASTM/DIN)
体	ダクタイル鋳鉄	ASTM A536 (60-40-18) / DIN GGG-50
Disc (Plate) (x2)	Aluminum Bronze	ASTM B148 (C95800 / C95400) / BS 1400 AB2
Shaft / Pin	Stainless Steel	AISI 304 or AISI 316
Seat (Seal)	EPDM (Ethylene Propylene Diene Monomer)	Excellent resistance to hot water, steam, and dilute acids
春	Stainless Steel	AISI 301 or AISI 316

Technical Specifications & Performance

Item	仕様
Design Standard	API 594, API 6D, EN 593, BS 5153
Face to Face Dimension	ASME B16.10 / API 594 (Short/Compact pattern)
Flange Drilling Standard	ASME B16.5 (Class 150)
Pressure Test Standard	API 598
Shell Hydrostatic Test	3.0 MPa (435 psi)
Seal Hydrostatic Test	2.2 MPa (319 psi)
Low Pressure Air Test	0.6 MPa (87 psi)
Installation Position	Horizontal or Vertical (Flow direction upward)
Flow Direction	Arrow cast on body (Flow –>)

Dimensional Data (Approximate)

Note: Wafer check valves have a short face-to-face length. The exact “L” dimension can vary slightly by manufacturer. Please verify the final dimension with the approved drawing.

サイズ	Face-to-Face Length (L)	Body Outside Diameter (D)	Flange Bolt Circle Dia. (D1)	No. of Bolt Holes & Dia.
DN300 (12″)	73 mm – 83 mm (Typical: 79 mm)	Approx. 340 mm	451 mm (ASME B16.5 150LB)	12 – 25 mm (Φ25)

Important Installation Note:
Ensure the pipeline flanges spread apart to insert this valve. The bolts are long-pass bolts that go through the entire valve body.

Product Features

Compact & Lightweight: The wafer body design significantly reduces weight and installation space compared to traditional swing check valves.
Low Pressure Drop: Streamlined disc design minimizes flow resistance.
Corrosion Resistance: その Aluminum Bronze disc offers superior resistance to corrosion from seawater, chlorides, and various acidic media, making it ideal for harsh environments.
Tight Shut-Off: The combination of a metal disc and an EPDM resilient seat provides bubble-tight sealing.
Non-Slam Performance: Stainless steel springs ensure quick closing of the plates before flow reversal, effectively preventing water hammer.

Inspection & Warranty

Valves are pressure tested in accordance with API 598.
Marking per MSS SP-25.
Free from porosity and structural defects.

If you need to adjust this sheet:

Change the seat material (e.g., to Viton® or PTFE).
Update specific face-to-face dimensions if provided by the manufacturer.
Add torque values or actuator data.

保証:

SAVVY VALVESは、卓越した製品品質と安心のアフターサービスの提供に尽力しています。当社のバルブは最低12ヶ月の耐用年数を保証しており、その期間中は必要なスペアパーツと詳細なメンテナンスマニュアルを無料でご提供いたします。保証期間中に人為的要因以外の損傷が発生した場合は、無償で部品を交換し、専門的な技術サポートを提供いたします。保証期間終了後は、スペアパーツ代のみご負担いただき、割引メンテナンスサービスは引き続きご利用いただけます。当社の目標は、信頼性の高い品質と包括的なアフターサービスを通じて、お客様の運用コスト削減と生産効率の向上を支援することです。技術的なお問い合わせやメンテナンスのご依頼など、当社の専門チームが迅速に対応し、お客様のバルブシステムが常に最適なパフォーマンスを維持できるよう尽力いたします。

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当社は 10 年以上にわたり、給水、石油・ガス、淡水化の分野における世界規模の主要プロジェクト向け産業用バルブの大手サプライヤーとして活躍しています。