Check Valve

Dual Plate

Dual plate check valves are a popular choice for various industrial applications due to their compact design, reliable performance, and low maintenance requirements.

Specifications

Check Valve - Dual Plate

Size Range

2 – 104 NPS, DN50 - DN2600

Body Materials

Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel, Titanium Alloy & Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay

Temperature Range

-29°C to 650°C

Trim Materials

Maximum Allowable Operating Pressure

ASME 150# to 2500#

Pressure-Temprature Rating

ASME B 16.34

Body Style

Flanged End, Wafer

Design Standard

API 6D, API 594, BS 1868

Flange Drilling

ASME B16.5

Testing Standard

API 598, API 6D

Face To Face

ASME B16.10

Applications

Refineries,Hydrocarbon,Energy and Process industries. Water Supply

Operation

Auto

Features:

- Wafer-Style Body: This design features a thin, lightweight body with flanged connections on both ends for easy installation between pipe flanges.
- Dual Disc Assembly: Two spring-loaded discs are positioned at the valve center, allowing for flow in one direction and preventing backflow.
- Retainerless Design (Optional): Some dual plate check valves eliminate the need for a retainer mechanism, simplifying the design and reducing potential failure points.
- Low-Profile Design: The wafer-style body and dual disc configuration contribute to a compact overall size, making them suitable for space-constrained applications.
- Variety of Materials: Available in various materials to suit different pressure ratings, temperatures, and fluid compatibility requirements.

Benefits:

- Low Pressure Drop: The streamlined design with dual discs minimizes flow restriction, leading to lower pressure drops compared to some other check valve designs.
- Fast Response: The lightweight discs and spring mechanism enable rapid opening and closing, making them suitable for applications requiring quick response times.
- Compact Size: The wafer-style body and low-profile design allow for installation in areas with limited space.
- Easy Installation: The flanged connections simplify installation between pipe flanges.
- Low Maintenance: The simple design with minimal moving parts contributes to their reliable operation and reduces maintenance requirements.
- Retainerless Design Advantage (if applicable): Eliminates a potential failure point and simplifies maintenance procedures.

FAQs:

A. What is the advantage of a retainerless design?

- Eliminates a potential point of failure (broken retainer) and simplifies maintenance by reducing the number of components to inspect or replace.

B. How do dual plate check valves compare to swing check valves?

- - Dual Plate: Compact, lower pressure drop, potentially faster response.
  - Swing Check: Simpler design, may have higher pressure drop and potential for slamming.

C. What factors influence selecting a dual plate check valve?

- - Pressure and Temperature Ratings: The valve needs to be rated for the specific operating conditions.
  - Pipe Size and Flow Rate: Choose a valve with the appropriate size and flow capacity for your application.
  - Fluid Compatibility: The valve materials must be compatible with the fluid being controlled.
  - Space Constraints: The compact size of dual plate valves can be advantageous in space-limited applications.

D. What are the maintenance requirements for dual plate check valves?

- They typically require minimal maintenance. Periodic inspection is recommended to ensure proper operation, identify wear, and potentially replace the discs or springs if necessary. The retainerless design (if applicable) can further simplify maintenance procedures.