Fully rubber lined dual plate check valves are specifically designed for corrosive and abrasive media applications. They feature a full rubber lining on all internal surfaces, significantly enhancing the valve’s wear and corrosion resistance. The compact wafer design makes them ideal for installation in systems with limited space.
Fully Rubber Lined Dual Plate Check Valve Technical Data Sheet
General Specifications
المعلمة | مواصفة |
نوع الصمام | Dual Plate Wafer Check Valve |
Design Type | Wafer, Dual Plate (Spring-loaded tilting disc) |
Nominal Size (DN) | DN50 ~ DN600 (2″ ~ 24″) |
تصنيف الضغط | PN10 / PN16 / PN25; Class 125LB / 150LB |
End Connection | Wafer Type (clamped between flanges) |
Face-to-Face Standard | API 594 / ISO 5752 / EN 558 |
Design Standard | API 594 / JB/T 8937 / DIN 3356 |
Testing Standard | API 598 / GB/T 13927 / ISO 5208 |
Certification | CE, WRAS, ACS and other certifications available |
Material Construction
- جسم: Ductile Iron (GGG40, GGG50), Carbon Steel (WCB), Gray Cast Iron (GG25, HT200), Stainless Steel (CF8, CF8M)
- Disc (Dual Plates): Ductile Iron, Stainless Steel (SS304, SS316), Bronze, Duplex SS
- Shaft/Hinge Pin: Stainless Steel (SS304, SS316)
- ربيع: Stainless Steel (SS304, SS316)
- Lining Material: EPDM, NBR, Natural Rubber, VITON, PTFE
- Body Style Options: Wafer, Lug, Double Flanged
Key Design Features
Feature | Benefit |
Full Internal Lining | The valve body interior, sealing surfaces, and discs in contact with the medium are fully coated with rubber, providing excellent corrosion, wear, and abrasion resistance. |
Dual Plate Design | Two spring-loaded half-moon plates rotate on a central hinge pin for low pressure drop and high flow capacity (Cv values). |
Spring-Assisted Closure | Torsion springs ensure the plates close rapidly and automatically upon flow reversal, preventing backflow and minimizing the water hammer effect. |
Silent Operation | The controlled, spring-assisted closure eliminates water hammer and reduces pipeline vibration, contributing to quieter operation. |
Compact & Lightweight | The wafer design is shorter, lighter, and takes up less space than conventional swing check valves, making it easy to install between standard flanges. |
Excellent Sealing | Rubber-to-rubber seating ensures bubble-tight shutoff and zero leakage, meeting EN 12266-1 Class A standards. |
Versatile Installation | Can be installed in horizontal or vertical upward flow lines, provided spring torque is suitable for the application. |
Performance Data
المعلمة | مواصفة |
Working Temperature Range | -15°C to +80°C (typical for EPDM/NBR) |
Suitable Media | Water, sewage, oil, weak corrosive fluids, acids, alkalis, and chemical solutions |
فئة التسرب | Zero Leakage (Bubble-tight) per API 598 / ISO 5208 Class A |
Flow Direction | Uni-directional |
Opening Pressure | < 0.2 bar |
Pressure / Temperature Ratings
Typical shell and seal test pressures at various pressure ratings are detailed in the table below. Please ensure operating conditions align with the pressure-temperature rating standards.
Nominal Pressure (PN) | Shell Test Pressure (Hydrostatic) | Seal Test Pressure |
PN10 (1.0 MPa) | 1.5 MPa | 1.1 MPa |
PN16 (1.6 MPa) | 2.4 MPa | 1.76 MPa |
PN25 (2.5 MPa) | 3.75 MPa | 2.75 MPa |
الصف 150 | 1.5 x Rated Pressure | Per API 598 |
Typical Applications
- Water and wastewater treatment
- Chemical processing and transfer lines
- Power plant desulfurization systems
- Mining and mineral slurry handling
- HVAC and building services
- Industrial cooling water circuits
ضمان:
تلتزم شركة سافي فالفز بتقديم منتجات عالية الجودة وخدمة ما بعد البيع مريحة. نضمن لصماماتنا عمر خدمة لا يقل عن ١٢ شهرًا، نوفر خلالها جميع قطع الغيار اللازمة وتعليمات الصيانة المفصلة مجانًا. خلال فترة الضمان، في حال حدوث أي ضرر غير بشري، نستبدل المكونات مجانًا ونقدم دعمًا فنيًا احترافيًا. بعد انتهاء الضمان، يدفع العميل فقط تكلفة قطع الغيار، مع الاستفادة من خدمات الصيانة المخفضة. هدفنا هو مساعدة عملائنا على خفض تكاليف التشغيل وتحسين كفاءة الإنتاج من خلال جودة موثوقة ودعم شامل لما بعد البيع. سواءً للاستفسارات الفنية أو احتياجات الصيانة، سيستجيب فريق خبرائنا على الفور لضمان الحفاظ على الأداء الأمثل لنظام صماماتك في جميع الأوقات.