Eliminate valve failure, fugitive emissions, and unplanned downtime. Our API 609 high temperature butterfly valves are engineered for oil & gas, petrochemical, and steam applications with metal seats and graphite packing.
In elevated temperature environments, conventional butterfly valves with elastomeric seats and standard stem seals often lead to catastrophic failures, process leaks, and costly maintenance cycles. Engineering teams and procurement managers face recurring challenges:
PTFE/rubber seats soften or creep above 200°C, causing leakage and loss of shut-off integrity. Replacing valves every 6–12 months inflates CAPEX.
Standard packing dries out and cracks under thermal cycling, leading to fugitive emissions and safety hazards. Compliance with EPA/OSHA becomes difficult.
Differential thermal expansion between disc and body causes high operating torque, actuator oversizing, and valve seizure during startup.
U.S. chemical plants report an average of $32,000 per hour of unplanned outage. Valve failures in high-temperature lines are a top-5 cause.
Offshore suppliers quote 16–24 weeks for specialty high-temperature valves. Rush shipping from China adds $3,000–$8,000 per airfreight.
Missing material traceability, pressure test records, or API/ISO certifications create audit failures and delays in project handover.
With over 10 years of export experience to the USA, Saudi Arabia, and Europe, our high temperature butterfly valve range delivers bi-directional shut-off, low fugitive emissions, and 5x longer service life compared to commodity alternatives. Every valve is backed by full material traceability and pressure test reports.
Stellite/Inconel overlay on disc and seat ring withstands up to 600°C continuous. Inherently fire-safe per API 607.
Low-emission graphite seal with Belleville springs compensates for thermal cycling. <50 ppm fugitive emissions tested per ISO 15848.
Keyed or splined stem with anti-blowout design prevents thermal lock-up. Field-proven in 300+ steam and thermal oil installations.
ANSI Class 150 / 300 / 600. Bi-directional shut-off with zero leakage at rated pressure. Available in wafer, lug, and flanged end configurations.
Custom stem extensions, gearing, actuation (pneumatic/electric), and special materials (Alloy 20, Hastelloy, Monel). 48h prototyping available.
Dedicated production line for high-temperature valves. Standard sizes ship from stock; engineered orders lead 6–8 weeks. 40% faster than industry average.
| Parameter | Standard Range | Available Options |
|---|---|---|
| Size Range | 2" – 48" (DN50 – DN1200) | Up to 60" on request |
| Pressure Rating | Class 150 / 300 / 600 | PN10 – PN100 |
| Temperature Range | -29°C to 600°C | Cryogenic / High-temp up to 800°C |
| Body Materials | WCB, CF8M (316SS), Duplex | Alloy 20, Hastelloy C276, Monel |
| Seat / Seal | Metal seated (Stellite/Inconel) | PTFE-lined, Graphite, Flexible graphite |
| Packing | Graphite + Belleville live-load | PTFE, carbon fiber, low-emission |
| Design Standard | API 609, ASME B16.34 | ISO 5752, EN 593 |
| Fire-Safe | API 607 / ISO 10497 | API 6FA |
| Fugitive Emissions | ISO 15848-1 Class B | Class A (helium tested) |
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All valves are pressure-tested per API 598 and supplied with material traceability, NDE reports, and certificate of compliance.
"We replaced 18" competitive high-temp butterfly valves with Thriveon's metal-seated design. Leakage dropped to zero, and actuator torque reduced by 27%. Our maintenance team is impressed."
"Thriveon's 6-week lead time saved our project. API 609 documentation was complete and audit-ready. We've standardized their high-temp valves on three Texas petrochemical plants."
"The graphite live-loaded packing solved our fugitive emission problem on steam isolation valves. Re-torquing interval extended from 3 months to over 2 years. Excellent technical support."
Full documentation: material certs (EN 10204 3.1/3.2), pressure test charts, and NDE reports provided with every order.
Thriveon's metal-seated butterfly valves are rated for continuous service up to 600°C (1112°F) with Stellite/Inconel seating. For short excursions up to 800°C, special high-alloy designs are available. The limiting factor is usually the stem seal material – our graphite packing with live-loading handles up to 600°C reliably.
Yes. Our API 609 metal-seated butterfly valves are widely used in saturated and superheated steam systems up to 450°C. The graphite packing and live-loaded gland prevent stem leakage during thermal cycling. For steam isolation, we recommend flanged or lug configurations to avoid gasket creep.
Resilient seats (PTFE, rubber) are limited to ~200°C due to material softening. Metal-seated valves use a metallic disc-to-seat interface (stellite, inconel, or hardened SS) that maintains sealing at 600°C. Metal-seated valves also offer fire-safety and lower fugitive emissions, but require higher actuation torque and are more costly. For continuous service above 250°C, metal seating is the only reliable choice.
High temperature valves have higher breakout torque due to thermal expansion and metal-to-metal seating. Thriveon provides torque curves at operating temperature for each size. We recommend a safety factor of 1.5x–2x on break torque. Pneumatic, electric, or hydraulic actuators can be mounted. Include a stem extension if the valve is in an insulated line. Contact our engineering team for a sizing calculation.
All valves are manufactured under ISO 9001:2015 and meet API 609, ASME B16.34, API 607 (fire-safe), and ISO 15848-1 (fugitive emissions). We also provide CE/PED, NACE MR0175/MR0103, and SIL 2 compliance on request. Full documentation is included with every shipment.
Absolutely. We offer free sample valves (up to 6" size) for qualifying projects – you pay only shipping. For larger sizes, we provide a prototype at cost with a 100% credit toward your first production order. Lead time for samples is typically 2–3 weeks.
Standard sizes (2"–12", Class 150/300) ship in 4–6 weeks. Engineered orders with special materials, actuation, or larger sizes take 8–10 weeks. We offer expedited production (6 weeks) for an additional 10% fee. Stock items in popular sizes can ship in 2 weeks.
We ship via sea freight (FOB Shanghai or CIF to your port) and air freight (DDP available). For urgent orders, we use FedEx Priority for small valves. All shipments include export packing, fumigated crates, and full customs documentation. Typical sea transit to Houston or Los Angeles is 25–30 days. We provide real-time tracking.
Get a free engineering review of your high-temperature valve application. Quote within 24 hours.
Free sample for qualified projects – risk-free trial.
David has spent 15+ years designing and specifying industrial valves for high-temperature, corrosive, and critical-service applications across North America, the Middle East, and Europe. He leads Thriveon's technical support team and has personally overseen over 200 high-temperature valve projects. He is a member of API Standards Committee and frequently contributes to valve specification guides for engineering contractors.
© 2026 Ningjin Thriveon Valve Co., Ltd. All rights reserved. | ISO 9001:2015 | API 609 | Made in China.
All product specifications and claims are based on controlled factory testing and field data. Individual results may vary depending on operating conditions.
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+86-311-86935302
+86-311-86935302
Email Us:
info@thriveonvalve.com
South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China 
