Fully Rubber Lined Dual Plate Check Valves

Fully Rubber Lined Dual Plate Check Valves

Valve Type Dual Plate Wafer Check Valve
Design Type Wafer, Dual Plate (Spring-loaded tilting disc)
Nominal Size (DN) DN50 ~ DN600 (2″ ~ 24″)
Pressure Rating 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

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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.

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