Product Model: H77X

Nominal Diameter: NPS 2"～NPS60" DN50～DN1500 

Pressure Range: CL150～CL600 PN10～PN100 

Working Temperature: -29°C to +425°C

Main Material: Carbon steel, Stainless steel, Alloy steel

Application: Suitable for pipelines handling media such as tap water, food, pharmaceuticals, power, petroleum, liquefied gas, steam, etc.

Product Overview
The wafer butterfly check valve is used in pure pipelines, as well as industrial, environmental protection, water treatment, and high-rise building water supply and drainage pipelines, to prevent reverse flow of the medium. This check valve adopts a wafer connection. The disc consists of two semicircles and uses a spring-loaded forced reset. The sealing surface can be hardfaced with wear-resistant material on the body or rubber-lined. It has a wide application range and reliable sealing.

Design Specifications

• Design Standard: API 6D, JB/T 8937, API 594

• Face-to-Face Dimensions: API 594, JB/T 8937

• Connection Standard: ASME B16.5, GB/T 9113, JB/T 79, HG/T 20592

• Pressure Test: API 598, GB/T 13927, JB/T 9092

• Pressure-Temperature Rating: ASME B16.34, GB/T 12224

Product Features

1. Short face-to-face dimensions, small size, and light weight.

2. The sealing disc can be made of soft-sealing or hard-sealing materials according to different working conditions, providing good sealing performance.

3. Can be used in both horizontal and vertical pipelines, making installation convenient.

4. Fast disc closing, resulting in low water hammer pressure.

5. The part materials, valve end types, and dimensions can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.