Like Valve Q367F-64C Double Block and Bleed (DBB) Fully Welded Ball Valve DN200 A105N Carbon Steel – Manufacturer for Buried Turbine Ball Valves in Natural Gas Transmission Pipelines
1. Like Valve Q367F-64C Double Block and Bleed (DBB) Fully Welded Ball Valve DN200 A105N Carbon Steel – Manufacturer for Buried Turbine Ball Valves in Natural Gas Transmission Pipelines
Figure 1 | Vertical Turbine-Operated DBB Ball Valve Assembly
Standard configuration includes left and right bleed and drain valves, pressure measurement tubing, and a bypass globe valve. Features a one-piece fully welded A105N forged steel body and a manual turbine operator. Ideal for urban sub-high-pressure gas branch lines and direct-burial applications with insulated pipelines.
Figure 2 | Pneumatic Remote-Controlled DBB Ball Valve
Equipped with a pneumatic actuator, accumulator tank, and explosion-proof control box. Provides remote open/close functionality with signal feedback. Designed for fully automatic shut-off, suitable for main natural gas transmission pipelines and gate station automation systems, ensuring stable performance under high-pressure PN64 conditions.
Figure 3 | Uncoated Grey DBB Ball Valve Body
A display of the raw forged valve body featuring an integral fully welded structure with external double bleed and pressure measurement lines. The uncoated finish allows for customizable anti-corrosion coatings as required. Supports extended stem designs for deep-burial well chamber retrofits.
Figure 4 | DBB Ball Valve Assembly with Side-Mounted Auxiliary Globe Valves
Features a large-diameter, thick-walled A105N body with an integrated triple-valve assembly (drain, vent, and pressure measurement) on the side. Equipped with an oversized turbine handwheel. A primary model for DN200 and above gas main transmission networks.
Figure 5 | Large-Diameter Vertical Handwheel DBB Ball Valve
A streamlined standard assembly featuring left and right bleed valves and an equalization line. Designed for simple structure and easy maintenance. A highly popular model for bulk procurement in residential estate gas supply and industrial park gas pipelines. DN200 is readily available in stock.
2. Complete Model Breakdown: Q367F-64C (Upgraded A105N Forged Steel)
·Q: Ball Valve
·3: Turbine Gear Manual Drive (Pneumatic / Electric actuators optional)
·6: Butt Weld (BW) End Connections (Seamless integration for buried pipelines)
·7: Trunnion-Mounted Straight-Through Design (Ensures ball stability without deformation under high pressure)
·F: Reinforced PTFE Soft Seal (Resistant to gas impurities; guarantees zero leakage under high pressure)
·64: Nominal Pressure PN64 (Adapted for sub-high/high-pressure natural gas pipelines)
·C: Valve Body Base Material Upgraded to A105N Forged Carbon Steel (An upgrade from standard WCB, offering superior high-pressure resistance and low-temperature impact toughness)
Core Design Feature: Double Block and Bleed (DBB) – Independent vent and drain valves at both ends for safer pipeline depressurization and purging during maintenance.
Standard Sizes: DN100, DN150, DN200, DN250, DN300 ~ DN1200 (Custom sizes available).
3. Core Product Advantages (Exclusive Selling Points for High-Pressure Natural Gas Applications)
1. A105N Forged Carbon Steel Body: PN64 High-Pressure & Explosion-Proof Compliance
The valve body is integrally forged from A105N low-temperature forged steel. Compared to standard WCB, it offers significantly enhanced pressure and impact resistance. It withstands low-temperature conditions down to -40°C, making it perfectly suited for long-distance high-pressure natural gas, coalbed methane, and urban sub-high-pressure gas networks, fully complying with gas pipeline explosion-proof safety standards.
2. Integrated DBB Structure: Compliance with Gas Maintenance Safety Regulations
Independent vent and drain valves are integrated at both ends of the valve body, complete with pressure measurement tubing. This allows for sectional depressurization and impurity purging prior to pipeline maintenance without the need for additional valves. It fully satisfies gas utility construction and acceptance specifications, eliminating safety hazards during gas depressurization.
3. Fully Welded Integral Construction: 30-Year Zero-Leakage & Maintenance-Free Burial
Manufactured using fully automatic submerged arc welding on a one-piece forged body, completely eliminating flange connection gaps. The exterior is coated with a yellow, gas-specific epoxy zinc-rich anti-corrosion coating. It can be directly wrapped with polyurethane insulation for direct burial. Highly resistant to rust in moist, acidic, or alkaline soil environments, ensuring maintenance-free operation for decades.
The trunnion-mounted ball structure is supported by top and bottom stems, ensuring the ball remains perfectly stable and does not shift under high-pressure media impact. The full-bore (unrestricted) design minimizes pressure drop during gas transmission, significantly reducing energy consumption in long-distance pipelines. It is perfectly adapted for high-capacity main natural gas transmission pipelines.
- Standard Manual Version: Features a turbine gear and handwheel operator, allowing a single operator to easily open and close large-bore DN200 valves.
- Automated Version: Equipped with an explosion-proof pneumatic actuator, an accumulator tank, and remote signal feedback, seamlessly integrating into gate station automation control systems. Custom extended stems are also available to accommodate deep-burial underground operation wells.
Every valve undergoes rigorous triple pressure testing before leaving the factory: hydrostatic strength test, airtightness test, and nitrogen leak detection. We provide A105N material spectrometer analysis reports, Special Equipment Manufacturing Licenses, and dedicated gas valve inspection reports. Our products fully comply with the stringent requirements for bidding and acceptance in gas utility and municipal general contracting projects.
| Parameter | Q367F-64C DBB Fully Welded Gas Ball Valve (A105N Forged Steel) |
|---|---|
| Nominal Diameter | DN100 / DN150 / DN200 / DN250 / DN300 ~ DN1200 (Custom sizes available) |
| Nominal Pressure | PN64 |
| Body Material | A105N Forged Carbon Steel (Spectrometer analysis reports available) |
| Ball Material | A105N + Hard Alloy Coating |
| Seal Material | Reinforced Gas-Resistant PTFE Soft Seal |
| Applicable Media | Natural Gas, Coalbed Methane, City Gas, Coal Gas, Non-Corrosive Industrial Gases |
| Operating Temperature | -40℃ ~ 80℃ |
| Connection Type | Butt Weld (BW) Ends (Compatible with seamless gas pipelines) |
| Core Structure | Trunnion-Mounted Ball, Integrated DBB Vent & Drain Lines |
| Actuation | Standard Turbine Manual / Explosion-Proof Pneumatic (Remote Auto-Control) / Electric |
| Surface Coating | Gas-Specific Yellow Anti-Corrosion Polyurethane Paint (Grey anti-corrosion coating customizable) |
| Application Scenarios | Long-distance gas main lines, urban sub-high-pressure gas pipelines, gate stations, direct-burial industrial park gas networks |
V. Industry Application Scenarios
- Long-Distance High-Pressure Natural Gas & Coalbed Methane Pipelines: Main transmission networks with large bore diameters (DN300 and above).
- Urban Municipal Sub-High-Pressure Gas Networks: Direct-burial pipelines (DN100-DN200 are our primary in-stock specifications).
- Gas Distribution Stations, Gate Stations & Pressure Regulating Stations: Automated shut-off systems (perfectly adapted for our pneumatic versions).
- Industrial Parks & Large-Scale Facilities: Self-supplied gas transmission pipelines.
- Residential Gas Supply Projects: Direct-burial insulated pipeline supporting valves for centralized community gas supply.
- Pipeline Retrofits & New Construction: Shut-off valves for upgrading old gas pipelines and supporting new gas engineering projects.
VI. About Like Valve: Our Manufacturing Strength
- Extended Stems: Adapted for deep-burial underground valve wells.
- Actuator Assemblies: Explosion-proof pneumatic/electric actuators with signal feedback control systems.
- Pre-Insulated Valves: Integrated polyurethane insulation bodies for one-stop direct-burial pipeline solutions.
- Third-Party Testing: Third-party material spectrometer testing and nitrogen airtightness certification.
- Documentation: Full Special Equipment Manufacturing Licenses, bidding documentation, and factory pressure test reports are included with every shipment.
VII. Procurement & After-Sales Guarantee
- Fast Delivery: In-stock sizes (DN100-DN300) ship on the day of payment; Custom sizes (DN400+) take 7-15 days; Pneumatic auto-control assemblies are delivered in 3-7 days.
- Warranty: 18-month comprehensive warranty. All valves pass triple pressure testing before leaving the factory. Free replacement parts are provided for quality issues not caused by artificial corrosion or media damage.
- Technical Support: One-on-one engineering consultation for gas pipeline condition selection, with free installation and construction guidance.
- Commercial Benefits: Tiered discounts for large-volume gas engineering orders; stable rebate policies for long-term gas valve distributors.
- Factory Audits: Gas utilities, general contractors, and valve distributors are warmly welcome to conduct on-site factory inspections and witness pressure testing.
Bottom Conversion Guide (Call-to-Action)
Manufactured from A105N forged steel to meet strict gas safety standards, we offer full-bore coverage from DN100 to DN1200, with customizable manual or pneumatic auto-control options. Contact us today for a free sizing solution and quotation for your gas engineering projects!