Forged Steel High-Pressure Flanged Ball Valve

DIYE VALVE's Forged Steel High-Pressure Flanged Ball Valve series is designed, manufactured, and tested in strict accordance with multiple domestic and international standards to ensure product performance meets global engineering needs.

- Design and manufacturing standards: GB/T 12237, API 608, ISO 17292, EN 1983:2013

- Flange connection standards: JB/T79.1~79.4, ANSI B16.5, GB/T 9113

- Structural length standards: ASME B16.10

- Testing standards: GB/T 13927, ISO 5208

Standard nominal diameters: DN10~DN300 (1/4"~12"), pressure ratings: Class 150~Class 600 (PN10~PN100); custom high-pressure non-standard specifications such as 2500LB and PN400 are available, and nominal diameters can be adjusted according to customer drawings to adapt to different high-pressure pipeline requirements.

Core Product Advantages

1. High-Quality Forged Materials, Stable Performance

The main material of the Forged Steel High-Pressure Flanged Ball Valve is high-quality forged steel, suitable for various harsh working conditions, specifically as follows:

- Carbon Steel Forgings (WCB/A216-WCB): High structural strength, suitable for conventional non-corrosive high-pressure conditions (such as ordinary industrial oil and gas pipelines).

- Stainless Steel Forgings (F304/F316L): 304 material is resistant to mild corrosion, suitable for general high-pressure chemical, water treatment, and other conditions; 316L material, with added molybdenum, significantly improves corrosion resistance and oxidation resistance, suitable for highly corrosive environments such as acids, alkalis, sulfur-containing media, and seawater. Its service life under high-pressure corrosive conditions is 3-5 times that of ordinary carbon steel ball valves.

- Special Steel Forgings (such as 35CrMoA): Customized for extreme high pressure and special working conditions, providing reliable material support.

2. High-Performance Accessories, Safe and Durable

All accessories for the Forged Steel High-Pressure Flanged Ball Valve are made of high-pressure specialized materials, ensuring the overall stability and safety of the valve:

- Valve Stem: Made of wear-resistant and corrosion-resistant forgings such as 2Cr13/A246-416, with a nitrided surface treatment, offering excellent torsional strength. The bottom-mounted design with a back seal structure prevents the valve stem from falling off and media leakage.

- Bolts: Use 35CrMoA/A193-B7 high-pressure specialized bolts, offering high strength and anti-loosening properties, suitable for high-pressure conditions.

- Seals: Made of high-pressure specialized materials such as PTFE, PPL, and fluororubber. Some models employ a triple structure of metal hard seal + elastic auxiliary seal, where the higher the pressure, the tighter the seal, achieving bidirectional zero leakage and meeting the API 6D "zero leakage" standard.

3. Scientific Structure, Wide Adaptability

Adopting targeted structural designs based on operating conditions, the Forged Steel High-Pressure Flanged Ball Valve is suitable for various scenarios:

- Floating Ball Structure: Suitable for small-diameter valves, relying on medium pressure to ensure a tight fit between the ball and the valve seat. Simple structure, reliable sealing.

- Fixed Ball Structure: Suitable for large-diameter valves. The ball is supported by upper and lower shafts, preventing offset during opening and closing, reducing operating torque, suitable for frequent operation under high pressure, and reducing valve stem wear.

- Anti-static and Fireproof Design: Equipped on some models. The anti-static design prevents static sparks, and the fireproof design allows for temporary sealing through metal-to-metal contact after the seals burn out, suitable for flammable and explosive high-pressure conditions.

Our Commitment

As a professional manufacturer and supplier in China, DIYE VALVE adheres to the philosophy of "Quality First, Customer Supreme." Our factory has a complete production and testing system, with strict control throughout the process to ensure product quality. We also provide professional technical support and after-sales service, and have established long-term and stable cooperative relationships with global partners.

Technical Parameters

FAQ

Q: Can the Forged Steel High-Pressure Flanged Ball Valve achieve zero leakage under high pressure?

A: It adopts a dual sealing design suitable for high-pressure working conditions: ① Main Sealing: It adopts a combination of embedded elastic valve seat (PTFE/PPL/fluororubber) and metal hard seal, with an O-ring behind the valve seat. The higher the medium pressure, the tighter the valve seat compresses the ball, achieving bidirectional zero leakage and meeting the API 6D "zero leakage" standard; ② Valve Stem Sealing: It adopts a bottom-mounted valve stem + back seal structure + multi-layer packing seal. The packing is made of high-pressure special flexible graphite or PTFE to prevent medium leakage at the valve stem and avoid valve stem torsion and detachment under high pressure; ③ Anti-static/Fire-proof Design: Some models have built-in anti-static springs. When the seal is burned, temporary sealing can be achieved through metal-to-metal contact, suitable for working conditions with flammable and explosive media.

Q: What are the differences between the floating ball and fixed ball structures of the Forged Steel High-Pressure Flanged Ball Valve? How to select according to the caliber?

A: ① Floating Ball Structure: Commonly used for small calibers (DN10~DN50), the ball has no fixed support, and the seal is achieved by pressing the ball against the single-sided valve seat through medium pressure. It has a simple structure, small opening and closing torque, and low cost, suitable for conventional high-pressure and small-flow working conditions; ② Fixed Ball Structure: Commonly used for large calibers (DN65~DN300), the ball is fixedly supported by upper and lower valve stems, with no offset during opening and closing, strong pressure-bearing stability, suitable for high-pressure, large-flow, and frequent operation working conditions, which can effectively reduce the risk of valve stem wear and deformation. Diye can customize floating ball or fixed ball structures according to customer needs and working conditions.

Q: What are the key precautions for installing the Forged Steel High-Pressure Flanged Ball Valve under high-pressure working conditions?

A: ① Flange Connection: Bolts must be high-pressure special bolts such as 35CrMoA/A193-B7, and the principle of "diagonal uniform and step-by-step tightening" shall be adopted to avoid valve body cracking due to uneven force, and the torque shall comply with standard regulations; ② Medium Flow Direction: Confirm that the valve body flow direction mark is consistent with the medium flow direction; there is no restriction on the flow direction of full-port ball valves; ③ Installation Environment: Avoid outdoor exposure to sunlight and rain, and clean pipeline impurities before installation to prevent ball core blockage; ④ Pressure Test Acceptance: On-site pressure test shall be carried out after installation. The water pressure test pressure is 1.5 times the nominal pressure, and the air pressure test pressure is 1.1 times the nominal pressure. It can be put into use only if there is no leakage.