Q61F-25C Reduced Port Fully Welded Ball Valve for District Heating

1. Product Gallery & Specifications

DN65 Insulated Integrated Q61F-25C Reduced Port Ball Valve
Equipped with yellow end caps and a pre-fabricated polyurethane outer protective layer. Perfectly adapted for direct burial in insulated district heating pipelines. Features an extended stem with flow direction indicators, making it a standard choice for individual household heating branch pipes. The polyurethane insulation layer can be applied directly after installation for convenient construction.

DN150 Bare Body Reduced Port Fully Welded Ball Valve
Features a one-piece forged and welded structure with a reduced port floating ball design. Rated at standard PN25 pressure with a WCB carbon steel body. Equipped with a compact side-mounted manual operator, it is a primary specification for heat exchange stations and district heating branch lines.

DN80 Compact Reduced Port Welded Ball Valve
Features a compact, one-piece body design that saves installation space in valve pits. Specifically designed for residential floor heating and corridor individual heating pipelines. Both ends feature standard butt-welding bevels for seamless on-site pipeline welding.

DN200 Large Bore Reduced Port Q61F-25C Ball Valve
Constructed with a heavy-duty forged body for large-bore applications. Equipped with a worm gear operator. Ideal for main heating station pipelines and industrial heating trunk lines. The reduced port design helps lower manufacturing costs while meeting project budget requirements.

DN100 Standard Reduced Port Fully Welded Ball Valve
A mainstream size with ample stock availability. Features a side-mounted manual operator and clear flow direction indicators. This is a highly popular specification for bulk procurement in municipal and real estate heating projects.
2. Model Number Breakdown: Q61F-25C
Q = Ball Valve
6 = Butt-Welded Connection
1 = Floating Straight-Through Ball
F = PTFE Soft Seal
25 = Nominal Pressure PN25
C = WCB Carbon Steel Body
Applicable Sizes: DN50, DN65, DN80, DN100, DN150, DN200
Structural Features: Reduced port flow path (cost-effective compared to full port, fully meeting standard heating flow requirements), one-piece fully welded body, manual operation.
3. Core Product Advantages (Tailored for District Heating)
One-Piece Fully Welded Body for Zero Leakage When Buried: The body is integrally forged and fully welded with automated circumferential welding, eliminating flange joints and preventing any seepage or leakage underground. The exterior features a sandblasted anti-corrosion coating, allowing for direct application of polyurethane insulation, perfectly integrating with direct burial heating systems.
Reduced Port Floating Ball Design for High Cost-Effectiveness: The reduced port design significantly reduces valve volume and procurement costs while meeting the hot water flow requirements for residential heating and exchange stations. Combined with a floating ball and PTFE soft seal, it ensures stable sealing for hot water up to 150°C and provides smooth, jam-free operation.
Simple Manual Operation & Convenient Maintenance: Standard side-mounted manual operator, with optional extended stems for deep burial pits. DN200 models can be upgraded with worm gears for effortless single-person operation. The yellow flow arrow on the body prevents reverse installation and reduces construction errors.
PN25 High-Pressure Rating for High-Temperature Heating Media: Rated at PN25, it accommodates municipal high-temperature heating hot water up to 150°C and withstands thermal cycling. The reinforced PTFE seats resist scale and impurities, preventing internal leakage over long-term use in residential heating networks.
Multiple Sizes in Stock & Integrated Insulation Options: Full range from DN50 to DN200 is kept in stock. Black polyurethane insulation jackets can be pre-fabricated upon request (as shown in the DN65 model). Standard butt-welding bevels allow seamless integration with insulated steel pipes, doubling construction efficiency.
100% Factory Tested for Hassle-Free Project Acceptance: Every valve undergoes dual hydrostatic strength and pneumatic tightness testing, accompanied by material certificates and test reports. Compliant with urban heating pipeline valve standards, providing all necessary bidding qualifications and ensuring smooth acceptance for real estate contractors and heating companies.

4. Technical Specifications

5. Application Scenarios
Residential district heating individual pipelines (DN65-DN100 are primary sizes).
Heat exchange stations and circulating hot water branch pipes in boiler rooms.
Industrial park heating and production hot water distribution networks.
Shut-off valves for direct-buried polyurethane insulated heating pipelines.
Valve retrofits for old residential heating systems and secondary floor heating networks.
6. About LIKEVALVE Manufacturing Strength
LIKEVALVE specializes in the R&D and manufacturing of valves for district heating pipelines. We own a complete production line covering forging, machining, welding, and pressure testing. Our facility maintains ample stock of DN50-DN200 reduced port fully welded ball valves, ensuring rapid dispatch for bulk project orders. We also offer customization for integrated insulation jackets, extended stems, and worm gear actuators.
Value-Added Services:
Free valve selection and sizing solutions for heating pipelines.
Integrated polyurethane insulation jacket pre-fabrication.
Third-party PMI (Positive Material Identification) testing and pressure test certification.
Complete bidding qualifications, certificates, and test records provided with every shipment.
Nationwide direct logistics; factory audits and on-site inspections are welcome.
7. Procurement & After-Sales Guarantee
Fast Dispatch: In-stock DN50-DN200 models ship the same day; custom insulated models delivered within 3 days.
Warranty: 12-month warranty on the entire unit. Free replacement parts for non-human-induced quality issues resulting from media corrosion, backed by factory pressure test records.
Technical Support: Dedicated engineers provide installation guidance and pipeline matching solutions.
Volume Discounts: Special pricing for bulk project orders and rebate policies for long-term heating distributors.
Customization: Special stem lengths and heavy-duty anti-corrosion coatings available based on specific operating conditions.
Call to Action (Bottom Conversion Guide)
For buried ball valves in residential heating networks, choose the LIKEVALVE Q61F-25C Reduced Port Integrated Fully Welded Ball Valve. Buy directly from the factory to eliminate middleman markups. DN50-DN200 sizes are in stock, and custom insulated models are available. Contact us today for free sizing and quotations for your heating projects and real estate procurement!