Wafer Retainerless Tilting Disc Check Valve for High-Pressure Pipelines

Product Overview: Wafer Retainerless Tilting Disc Check Valve

Wafer check valve is applicable for various pipelines with nominal pressure of PN1.0 Mpa~42.0Mpa, Class 150LB~2500LB and nominal diameter of DN15~1200mm, NPS 1/2-48 and working temperature of -196~540 degree Celsius to be used for protecting from medium backflowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, acetid, strong oxidizing medium and urea etc. By utilizing an advanced retainerless design, this valve completely eliminates body penetrations and pinholes along its exterior. This structural choice creates a solid, impenetrable metallic boundary that physically prevents any fugitive emissions or external leakage, ensuring a safer operational environment. Furthermore, the internal tilting disc mechanism provides a rapid, non-slam closure. When fluid velocity drops, the disc smoothly and quietly swings shut before reverse flow can build up, effectively mitigating destructive water hammer vibrations that could otherwise fracture adjacent piping. These characteristics make it a highly dependable safeguard for critical infrastructure, widely applied across boiler feedwater systems, municipal steam networks, heavy oil and gas transmission lines, and demanding chemical fluid pipelines that require absolute containment of aggressive substances.

Technical Specifications & Manufacturing Standards

When managing fluid dynamics in extreme environments, structural integrity and rigorous quality control are paramount. Engineered specifically to handle intense mechanical stress, this valve series is built to protect vital upstream equipment from catastrophic backflow damage. Every unit undergoes strict inspection and testing protocols to guarantee exceptional sealing capabilities under severe operational loads. The heavy-duty metallic construction provides a reassuringly solid physical presence, translating to long-term stability in the field. Below are the precise sizing parameters and the foundational technical standards that govern the manufacturing process of these high-pressure protective devices.

• 1) Size:3" - 40"

• 2) Class:150lbs - 900lbs

Technical standards:

Premium Materials and Component Construction

The longevity of any pipeline protection device relies entirely on its metallurgical composition. We provide a comprehensive array of carefully selected carbon steels, stainless steels, and specialized alloys to match the exact chemical profile of your flow media. The tactile finish of the internal components reveals precision-machined seating surfaces that ensure a tight, repeatable metal-to-metal or resilient seal. This deliberate material selection allows the valve body and internal disc to maintain their structural geometry across an extreme temperature spectrum, resisting deformation whether exposed to the freezing depths of cryogenic processing or the blistering ambient heat of industrial refining. The specific material grades available for each primary component are detailed below.

Main materials:

• 1) Body: CS/SS - WCB, WCA, WCC, A351, A744, 304, 304L, 316, 316L

• 2) Disc: Stainless steel - A351, 420S, S42000, 304, 304L, 316, 316L

• 3) Stem and sealing surface: A351, A744, 304, 304L, 316, 316L

  
  

Key Product Features and Operational Efficiency

Beyond pressure containment, this valve is engineered to optimize the fluid dynamics of your entire piping network. The streamlined profile of the tilting disc creates an exceptionally large flow area when fully open. This physical design significantly reduces fluid resistance and minimizes pressure drop, which directly translates to enhanced energy efficiency and lower pumping costs over the system's lifespan. Additionally, the ultra-short wafer face-to-face dimension and reduced-weight architectural design drastically cut down the physical space required for installation. This compact footprint relieves mechanical stress on pipe flanges and drastically lowers structural support costs, making it the perfect fit for tight horizontal or vertical pipeline configurations where spatial economy is critical.

Product features

• To API594

• Face to face per ANSI B 16.10

• Flange ends dimension ANSI B 16.5/ANSI B 16.47

• Final inspection tests to API598.

Materials & Environmental Protection