GOST Stainless Steel Lift Check Valve

The GOST Stainless Steel Lift Check Valve is specifically designed for the stringent requirements of pipeline systems in Russian-speaking regions and the Commonwealth of Independent States (CIS), ensuring the safe and stable operation of projects in oil and gas, chemical, and power generation sectors. As a professional manufacturing plant, DIYE VALVE strictly controls the entire production process to ensure that products meet GOST standard requirements, providing reliable assurance for critical infrastructure applications.

Product Features and Performance

DIYE's GOST Stainless Steel Lift Check Valve is manufactured using high-quality stainless steel alloys, including 304 (08X18N10), 316 (10X17N13M2T), and AISI 321 (12X18N9T). This material selection endows the product with excellent corrosion resistance, high-temperature and high-pressure resistance, and superior erosion resistance, ensuring a long service life under harsh operating conditions.

The valve operates automatically based on the weight of the valve disc and the pressure of the medium, achieving a precise one-way seal and stabilizing pressure while protecting pipeline integrity. The GOST Stainless Steel Lift Check Valve fully complies with GOST 33259 standards and can seamlessly interface with regional piping systems. The product design is versatile, supports customized configurations, and provides complete GOST qualification documentation and EAC certification, facilitating project compliance and acceptance.

Applicable Standards

1. Design and Manufacturing Standard: GOST 33423-2015 "General Technical Conditions for Swing/Lift Check Valves", covering pressure ranges up to 250 MPa.

2. Flange Connection Standard: GOST 33259 (flange dimensions), GOST 12815-80 (valve connection flange), suitable for pressures PN0.1–20 MPa and temperatures -253℃ to 600℃.

Key Specifications

1. Nominal Diameter: DN15–DN400 (standard size), customizable up to DN600.

2. Pressure Rating: PN1.6–PN250 MPa, covering low-pressure to ultra-high-pressure applications.

3. Temperature Range: Stainless steel -60℃ to 565℃; Carbon steel -40℃ to 450℃.

4. Sealing Surface Types: RF raised face (standard), RJ ring connection (high pressure), MFM raised face, compatible with GOST standard gaskets.

5. Connection Methods: All flange connections (weld-on flange/flat-face flange), some compatible with weld neck (BW) connections.

Core Advantages

1. Full Specification Coverage: Mass production of swing/lift GOST stainless steel check valves, covering PN1.6–PN100 MPa and DN15–DN400, meeting the needs of various projects.

2. Precision Manufacturing: Using high-quality forging materials (Stal 20, 304/316L/321, etc.), combined with precision CNC machining, the sealing surface accuracy meets GOST standard requirements.

3. Complete Certification Guarantee: Providing complete EAC certification, GOST marking, material certificate (GOST 16523-97), flaw detection report, and a complete set of English-Russian bilingual export documents.

4.Market expertise: We have proven track records in GOST projects in the oil, gas, chemical, and power sectors in Russian-speaking regions and CIS countries. We can customize products for specific working conditions and provide long-term supply support to the Russian-speaking market.

FAQs

Q: How to choose between swing check valve and lift check valve?

A: Swing check valves have low flow resistance and are suitable for large-caliber, normal temperature and pressure main pipelines; lift check valves have more precise sealing, suitable for small and medium-caliber, high-pressure, and pure medium and instrument pipelines.

Q: What core standards do GOST Stainless Steel Lift Check Valves implement?

A: The valve body generally complies with GOST 33423-2015; the flange connection follows GOST 33259-2015 and GOST 12820-80; materials refer to GOST 1050 and GOST 5632, and EAC certification can be provided for export.

Q: What is the core function of the GOST Stainless Steel Lift Check Valve?

A: It realizes automatic one-way circulation, prevents medium backflow, weakens water hammer impact, protects pumps, equipment and pipeline networks, and ensures the safe and stable operation of GOST pipeline systems.