As a source butterfly valve manufacturer, we provide robust, reliable, and certified valve solutions for every critical system in your power plant—from fuel supply and steam cycles to BOP and environmental systems.
Explore ApplicationsSafety and absolute reliability are paramount. Our valves for fuel systems are engineered for zero-leakage shutoff, fire safety, and certified for explosive atmospheres.
CCGT Natural Gas Supply
- Media: Filtered Natural Gas
- Pressure: PN25 ~ PN100 (Class 150-600)
- Temp: -20°C ~ 80°C
- High-pressure absolute sealing (zero gas leakage).
- Fast emergency shutdown (ESD) capability.
- Explosion-proof certification required.
JR-TOV series Triple Offset Valve (Wafer/Flange)
Pneumatic Actuator (with Spring-Return for Fail-Close) or Explosion-Proof Electric Actuator
- Body: A216 WCB / A352 LCB
- Disc: A351 CF8M (316 SS)
- Stem: 17-4PH
- Seat: Laminated SS316+Graphite
- Zero-Leakage Guarantee: The torque-sealing, friction-free design of a TOV with a metal seat achieves durable, bubble-tight (ISO 5208 Rate A) zero leakage, ideal for critical gas shutoff.
- Inherent Safety: A fail-close actuator ensures automatic shutdown on power/air loss. Actuators and accessories are available with ATEX / IECEx certification.
Fuel Oil Transfer & Switching
- Media: Light Diesel, Heavy Fuel Oil
- Pressure: PN16 / PN25 (Class 150)
- Temp: Ambient ~ 120°C
- Fire safety is mandatory.
- Media compatibility (oil and temperature resistance).
- Reliable shutoff to prevent cross-contamination.
JR-HPV series High-Performance Valve (API 607 Fire-Safe)
On/Off Electric Actuator, Explosion-Proof (Ex d IIB T4)
- Body: A216 WCB
- Disc: A351 CF8M
- Stem: 17-4PH (Anti-blowout design)
- Seat: RPTFE (Primary) + Graphite (Secondary)
- Certified Safety: API 607 fire-safe certification is a critical safety requirement for fuel oil systems, providing a final line of defense in a fire.
- Dual Sealing: A soft seat provides daily zero-leakage, while the graphite secondary seal ensures emergency sealing if the primary seat is compromised by fire. The double offset design reduces wear and extends service life.
From ultra-pure condensate to high-temperature steam, our valves are designed to maintain system purity, handle thermal stress, and provide precise control.
Condensate Polishing Plant
- Media: High-Purity/Demineralized Water
- Pressure: PN16 / PN25
- Temp: 40°C ~ 60°C
- Prevent secondary contamination (no metal ion leaching).
- Resist chemical corrosion from regeneration acids/alkalis.
Heavy-Body Series Stainless Steel
Electric On/Off Actuator
- Body: A351 CF8M (316 SS)
- Disc: A351 CF3M (316L, Mirror Polish)
- Stem: SS316L
- Seat: EPDM (Food Grade) / PTFE
- Purity Assurance: Full 316/316L wetted parts with a mirror-polished disc minimize ion leaching and bacterial adhesion, protecting expensive boilers and resin beds.
- Cost-Performance: A resilient-seated centric design provides reliable bi-directional zero-leakage and is the most cost-effective solution for this clean service.
Deaerator Inlet/Outlet
- Media: Saturated Water, Low-Pressure Steam
- Pressure: PN16 ~ PN40
- Temp: 100°C ~ 180°C
- Flashing and cavitation potential from pressure drops.
- High-temperature stability for sealing materials.
JR-HPV series High-Performance Valve
Electric Modulating or On/Off
- Body: A216 WCB
- Disc: A351 CF8M
- Stem: 17-4PH
- Seat: HT-EPDM / RPTFE
- Anti-Cavitation Design: The double-offset geometry allows the disc to swing clear of the seat, reducing erosion from high-velocity flow and better handling mild cavitation.
- Dedicated Materials: HT-EPDM is a cost-effective choice for hot water/steam up to 150°C. RPTFE offers a more robust solution for higher temperatures or modulating service.
Turbine Bypass System
- Media: High/Medium Pressure Steam
- Pressure: Extreme pressure drop
- Temp: 250°C ~ 540°C
- Severe service: high pressure drop, velocity, temp, noise, and vibration.
- Precise flow and pressure control.
- High erosion resistance needed.
JR-TOV series Triple Offset Valve (Specially Reinforced)
High-Speed, High-Thrust Electric Modulating Actuator
- Body: A217 WC6 / WC9
- Disc: CF8M, Stellite Hard-faced Seal
- Stem: Inconel 718
- Seat: Integral Body Seat, Stellite Hard-faced
- Ultimate Erosion Resistance: This is one of the most severe applications. Hard-facing the seat and disc sealing surfaces with Stellite is essential to resist erosion from high-energy steam.
- Structural Integrity: Chrome-moly alloy bodies (WC6/WC9) and an Inconel stem provide the necessary mechanical strength and stability at extreme temperatures and pressures. The zero-friction design is ideal for precise throttling.
Balance of Plant systems require versatility and durability. We offer cost-effective, robust solutions for everything from large-diameter water intake to aggressive chemical dosing.
Raw Water Intake System
- Media: River/Lake Water (with silt, organisms)
- Size: DN300 - DN2000+
- Pressure: PN6 / PN10
- Balancing performance and cost for large diameters.
- Resistance to corrosion and impurities.
Flanged Resilient Seated Butterfly Valve
Electric On/Off or Manual Gearbox
- Body: WCB / GGG50 (Internal/External FBE Coating)
- Disc: A351 CF8 (304 SS)
- Stem: SS420 / SS316
- Seat: EPDM
- Structural Stability: For large pipelines, flanged connections provide superior installation rigidity and sealing reliability compared to wafer types.
- Economical & Durable: The "FBE-coated ductile iron body + stainless steel disc" is the classic, proven, and most cost-effective configuration for raw/fresh water applications. The disc rotation provides a self-cleaning effect on the seat.
Chemical Dosing System
- Media: Acid (HCl), Alkali (NaOH), NaClO, etc.
- Size: DN50 ~ DN200
- Extreme chemical corrosion, especially from oxidizers.
- Zero-leakage containment of hazardous chemicals.
PTFE/PFA Lined Butterfly Valve
Electric On/Off or Pneumatic
- Body: WCB / GGG50
- Disc: CF8M fully encapsulated in PFA/PTFE
- Stem: SS316
- Seat: PTFE / PFA
- Ultimate Corrosion Protection: All wetted parts are fully lined with thick PFA/PTFE, isolating the metal body from virtually all chemical media.
- High Value: Lined valves use a standard cast iron/carbon steel body for pressure containment, achieving superior corrosion resistance at a fraction of the cost of exotic alloy valves. A pinless, encapsulated disc design eliminates potential leak paths.
Compressed Air System
- Media: Instrument Air (dry, oil-free), Plant Air (oily)
- Pressure: PN10 / PN16
- Frequent operation requires long cycle life.
- Oil compatibility for plant air applications.
Signet Series Carbon Steel Wafer Butterfly Valve
Pneumatic (Fast-acting) or Manual Lever/Gear
- Body: GGG40 / WCB
- Disc: CF8 (304 SS)
- Stem: SS410
- Seat: NBR (for oily air) / EPDM (for instrument air)
- Condition-Matched Seat: Selecting an NBR (Nitrile) seat for oily air service is critical, as its excellent oil resistance ensures a much longer life than standard EPDM, which can degrade.
- Economical & Reliable: This is a standard industrial application where our general-purpose valves offer exceptional reliability and value. Pneumatic actuators provide the fast response needed for process control.
Meeting environmental regulations requires high-performance dampers and abrasion-resistant valves. We provide solutions for low-leakage isolation and handling of abrasive slurries.
Flue Gas Damper
- Media: Boiler Flue Gas (SOx, NOx, dust)
- Size: >DN1000 (often rectangular)
- Temp: 120°C ~ 200°C
- Structural rigidity for very large sizes to prevent distortion.
- High temperature and dust erosion on seals and bearings.
- Low leakage rate is critical for SCR/FGD efficiency.
JR-TOV series Triple Offset Damper
Electric Actuator (with linkage assembly)
- Body: Carbon Steel Q235B / A36
- Disc: Carbon Steel (with stiffeners)
- Stem: SS410 / SS316
- Seat: Multi-layer stainless steel metal seal
- Superior Sealing: Compared to traditional louver dampers, our Triple Offset design can achieve leakage rates below 0.5%, significantly improving flue gas treatment efficiency and meeting strict environmental standards.
- Structural Advantage: By adapting mature TOV technology, we provide a structurally stable, low-torque, and reliable sealing solution for even the largest ducts.
Ash Handling Slurry
- Media: Slurry of water and ash
- Pressure: PN10 / PN16
- Temp: Ambient
- Extreme abrasion from hard ash particles is the primary failure mode.
- Potential for slurry to settle and clog the valve.
HP25 DI Wafer Butterfly Valve
Pneumatic Actuator
- Body: GGG50 (Ductile Iron)
- Disc: Duplex Steel (2205) or Tungsten Carbide Coated
- Stem: 2205
- Seat: Polyurethane (PU)
- Top-Tier Abrasion Resistance: A Polyurethane (PU) seat offers several times the abrasion resistance of standard rubber. A Duplex Steel disc provides an excellent combination of wear and corrosion resistance, making this the professional choice for ash slurry.
- Clog-Resistant: The smooth, unobstructed flow path of a centric butterfly valve minimizes areas where slurry can settle and solidify.
Hydropower applications demand ultimate reliability under high pressure. Our valves are engineered for main inlets, turbine protection, and large-scale cooling systems.
Penstock / Turbine Inlet Isolation
- Media: Clean Water
- Pressure: High, up to PN40
- Size: Large Diameter (DN800+)
- High static pressure and dynamic torque.
- Absolute reliability for turbine protection (emergency shutoff).
- Long-term sealing integrity after years of static open position.
JR-TOV series Triple Offset Double Flanged Valve
Hydraulic Actuator with Counterweight for fail-safe closing
- Body: A216 WCB / A516 Gr.70 Fabricated
- Disc: A351 CF8M
- Stem: 17-4PH / 2205
- Seat: Laminated SS316+Graphite
- High Pressure & Bi-directional Seal: The metal-seated TOV is designed for high-pressure, bi-directional, zero-leakage service, essential for main inlet safety.
- Friction-Free Operation: The camming action prevents rubbing between the seat and seal, ensuring low operating torque and reliable sealing even after long periods of inactivity. A counterweight hydraulic system provides the most reliable fail-safe emergency closure.
Our technical expertise translates into real-world performance. See how we solve complex challenges for power plants worldwide.
"Switching to the JRVAL Triple Offset Valve on our main gas line eliminated our persistent leakage problems. We now have absolute confidence in our shutdown and isolation procedures."
— Chief Engineer, Major CCGT Power Plant
We are not just a supplier; we are your manufacturing partner. Our integrated capabilities provide unmatched quality control, flexibility, and value.
Our in-house foundry allows us to control quality from the raw material. This means you can freely combine body, disc, stem, and seat materials to achieve the best cost-performance for your specific operating conditions, without paying for over-engineering.
From mold development to precision casting, we have complete control over the entire process. This ensures every valve possesses exceptional mechanical strength and dimensional accuracy, laying a solid foundation for long-term stability under high pressure and frequent operation.
For critical fuel gas and steam applications, our Triple Offset and High-Performance valves provide certified safety and performance. API 607 Fire-Safe and ISO 5208 Rate A zero-leakage are standard features, not optional extras, providing you with dependable protection.
Selecting the right alloy is the single most important factor for valve longevity in high-temperature and high-pressure service.
Beyond materials, specific design features are critical for safety and long-term performance in a power plant.
Valve failure is not an option in power generation. Partner with our engineering team to specify a solution that delivers quantifiable performance, enhanced safety, and long-term asset integrity.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
Technical Support: Magic Lamp - Website
