PN40 GOST A105 Integral Forged Gate Valve - Russian Standard

Product Overview

The PN40 GOST A105 Integral Forged Gate Valve is a high-reliability industrial isolation valve strictly manufactured in accordance with Russian GOST standard and EAEU technical regulations. This forged gate valve adopts A105 carbon steel integral forging process, with no welding seams, no casting defects, and excellent structural compactness. Rated for PN40 (4.0MPa) nominal pressure, it delivers stable mechanical performance, good pressure resistance and temperature resistance, perfectly matching the pipeline technical requirements of Russia, Central Asia and EAEU industrial projects.

Different from traditional cast gate valves, the one-piece forged A105 body features higher density, stronger impact resistance and longer service life. The valve adopts precision hard sealing technology, realizing bidirectional tight shutoff and zero leakage. It is widely used in petrochemical, natural gas, heating pipeline, water supply and power station supporting systems in Russian-speaking regions, and is the preferred standard valve for EAEU industrial engineering renovation and new construction projects.

Key Features & Advantages

1. Strict Russian GOST Standard Compliance
Designed, dimensioned and tested fully in accordance with Russian GOST industrial valve standards, complying with EAEU TR CU 010/032 technical regulations. The overall structure, flange size, pressure grade and technical inspection indexes fully meet local project acceptance standards, supporting customs clearance and project bidding in Russia, Kazakhstan, Belarus and other EAEU countries.

2. A105 Integral Forged Steel Body
The valve body adopts ASTM A105 high-quality carbon steel one-piece forging. Compared with cast steel valves, it has denser metal structure, higher tensile strength and yield strength, effectively avoiding porosity, sand holes and crack defects. The forged body maintains stable performance under long-term PN40 pressure cycling and medium scouring, with strong anti-fatigue and anti-deformation capabilities.

3. PN40 Standard Pressure Resistance
Customized for PN40 (4.0MPa) medium-pressure working conditions, the valve body wall thickness and internal structure are optimized per GOST standard. It can operate stably for a long time under rated pressure, suitable for conventional industrial medium-pressure pipelines, solving the problems of insufficient pressure resistance and easy leakage of ordinary valves in Russian industrial systems.

4.Zero Leakage Hard Seal Structure
The gate and seat are precisely machined and fitted, with optional hard alloy overlay. It realizes bidirectional bubble-tight sealing, meets industrial zero-leakage requirements, and is suitable for gas, oil and water medium pipelines with strict sealing standards. The sealing surface is wear-resistant and scouring-resistant, reducing daily maintenance frequency.

5.Wide Temperature & Medium Adaptability
A105 forged steel material supports a working temperature range of -29℃ ~ 425℃, adaptable to water, steam, natural gas, crude oil and other conventional industrial media. It can stably adapt to the temperate continental climate and seasonal temperature changes in Russia and Central Asia, with strong environmental adaptability.

6.Simple Structure & Low Maintenance
Compact integral forging structure, fewer vulnerable parts, stable opening and closing operation without jamming. The standardized GOST structure design facilitates local parts replacement and maintenance in EAEU regions, greatly reducing later operation and maintenance costs for industrial pipelines.

Technical Specifications

Applications

• Russian Petrochemical Industry: Oil refinery pipelines, natural gas transmission and distribution pipelines, chemical medium isolation systems

• Urban Heating & Water Supply: Municipal heating steam pipelines, tap water supply and drainage systems in Russian cities

• Industrial Factory Pipeline: Manufacturing plant compressed air, process water and medium-pressure fluid control systems

• Energy & Power Supporting: Small and medium power station auxiliary pipelines, boiler water supply and steam delivery systems

• EAEU Regional Engineering: Industrial construction, pipeline renovation and supporting valve projects in Central Asia and Eastern Europe

Why Choose Our PN40 GOST A105 Forged Gate Valve?

✅ Full GOST Standard Compliance — Strictly follow Russian GOST specifications, pass EAEU technical certification, no obstacle for local project acceptance and customs clearance.

✅ Premium A105 Forged Body — Integral forging eliminates casting defects, high structural strength, durable for long-term PN40 medium-pressure operation.

✅ Stable Zero Leakage Performance — Precision hard seal design, effectively prevents medium leakage, ensuring safe and stable pipeline operation.

✅ Adapt to EAEU Working Conditions — Adapt to regional climate and industrial standard requirements, perfect for Russian and Central Asian industrial projects.

✅ Low Operation Cost — Reliable quality, low failure rate, convenient maintenance and replacement of standard parts.

Order & Certification Information

MOQ: 1 Unit
Lead Time: 15-30 working days for standard sizes
Certificates: EN10204 3.1 Material Certificate, GOST Standard Inspection Report, ISO 9001 Certificate, EAEU Compliance Document
Packing: Anti-rust treatment + Standard export wooden case
Warranty: 18-month quality warranty, lifelong technical support

Contact Us for customized GOST sizes, connection types and batch quotation for Russian industrial projects.

What Is a Forged Steel Gate Valve

A Forged Steel Gate Valve is a high strength industrial valve designed for reliable isolation of fluids in pipelines. It operates through a vertical gate movement that either fully opens or completely blocks the flow path. Unlike cast versions, the forged body structure provides superior density and mechanical strength. This type of valve is commonly used in high pressure, high temperature, and critical service environments such as oil and gas systems, chemical processing units, and power generation facilities where safety and durability are essential.

Why the Forged Steel Gate Valve Matters

The Forged Steel Gate Valve is important because it delivers strong structural integrity and dependable sealing under extreme operating conditions. Forged materials reduce internal defects and improve resistance to pressure stress, making the valve suitable for critical systems. It ensures safe isolation during maintenance and prevents leakage in high risk applications. Its reliability helps protect expensive equipment and supports continuous operation in industries where system failure is not acceptable.

Common Product Types by Forged Steel Gate Valve

Forged Steel Gate Valves are available in several configurations to meet different operational needs. Common types include bolted bonnet and welded bonnet designs, depending on pressure and sealing requirements. Rising stem and non rising stem structures are both widely used. Wedge designs such as flexible wedge and solid wedge are selected based on temperature stability and sealing performance. Manual, electric, and pneumatic actuation options are available for different control systems.

Key Advantages of Forged Steel Gate Valve

The Forged Steel Gate Valve offers excellent strength, high pressure resistance, and reliable shutoff performance. Its forged body structure reduces the risk of porosity and improves durability. The valve provides low flow resistance when fully open and tight sealing when closed. It is suitable for harsh environments involving high temperature, pressure fluctuations, and corrosive media. These characteristics make it a long lasting and dependable solution for critical industrial applications.

Forged Steel Gate Valve Machine Structure and Core Stations

Manufacturing begins with forging the body, bonnet, gate, and stem using high quality steel materials. Core production stations include heat treatment to enhance mechanical properties, followed by precision CNC machining of sealing surfaces, threads, and guide areas. Hardfacing may be applied to improve wear resistance. Assembly stations install the gate, stem, packing system, and bonnet components. Final processes include pressure testing, surface finishing, cleaning, marking, and packaging to ensure accuracy and reliable performance.