Eliminate valve failures and project delays. Our OS&Y (Outside Screw & Yoke) gate valves deliver 30% longer service life, full traceability, and 15–20% cost savings versus Western brands — with lead times as short as 25 days.
✅ ISO 9001 · CE · API 6D · 5,000+ valves shipped to USA, Saudi Arabia, South Africa & Italy
Valve stem failures or seat leaks cause $12,000–$50,000 per hour of lost production in critical water, oil, and steam lines.
40% of low-cost imports fail pressure tests within 6 months — no material certs, no traceability, no accountability.
Standard suppliers quote 12–18 weeks for OS&Y valves. Your project can't wait that long.
Oversized, poorly packed valves arrive damaged — then you bear the return shipping and project delay penalties.
Navigating ASME B16.34, API 600, NACE MR0175, and local codes is time-consuming and risky if done wrong.
Suppliers vanish after payment. No spare parts, no technical support, no warranty honored.
You don't have to tolerate this. Thriveon's OS&Y valves are engineered for reliability, fully certified, and backed by a decade of export experience.
See how we solve each pain point →Every valve is designed by our senior engineers (10+ years avg. experience) and manufactured in our 35,000 m² facility in Northern China. Here's why procurement managers choose Thriveon:
Outside screw & yoke mechanism with rising stem — visual indication of valve position. Stainless steel stem, bolted bonnet, and flexible wedge gate for bubble-tight shut-off.
All castings sourced from ISO-certified foundries. EN 10204 3.1 mill certs included with every order. Chemical & physical reports available.
Valves are designed to ASME B16.34, API 600, API 6D, CE/PED, NACE MR0175. We also provide FCC, FDA, RoHS, VDE, SAA, CCC upon request.
Standard lead time 25–35 days (FOB Tianjin). Express production available for urgent orders — as fast as 15 days.
Export-grade plywood cases, foam-lined, with humidity indicators. Zero damage claims from US clients in 2024. We handle FOB, CIF, DDP terms.
Need a special end connection (BW, SW, threaded), extended stem, or custom tag? We've designed 800+ custom valve configurations for global customers.
| Parameter | Specification |
|---|---|
| Size Range | DN50 – DN600 (2" – 24") |
| Pressure Rating | Class 150 – Class 1500 (PN10 – PN250) |
| Body Materials | WCB, WCC, LCB, CF8 (304), CF8M (316), Duplex 2205 |
| Stem Material | A182 F6a (13Cr), A182 F304, F316, Inconel X-750 |
| Seat / Wedge | Flexible wedge, 13Cr overlay / Stellite #6 hard-facing |
| End Connections | Flanged (ASME B16.5), Butt Weld (BW), Socket Weld (SW), Threaded |
| Design Standard | API 600 / ASME B16.34 / EN 1984 |
| Test Standard | API 598 / ISO 5208 (Rate A – zero leakage) |
| Temperature Range | -46°C to +593°C (-50°F to +1100°F) |
| Certifications | ISO 9001:2015 · CE-PED · API 6D (on request) · NACE MR0175 |
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All valves are hydrostatically tested at 1.5x rated pressure. Shell test, seat test, and backseat test included.
Municipal plant in Texas replaced failing gate valves with Thriveon OS&Y Class 150 valves. Result: Zero leaks in 18 months, 30% lower maintenance cost vs. previous supplier.
Midstream operator in West Texas uses API 600 OS&Y valves for 8" crude oil pipelines. Result: 100% pass rate on API 598 tests, delivered in 5 weeks vs. 14-week industry average.
Industrial boiler plant in Ohio required Class 300 OS&Y valves with NACE MR0175. Thriveon supplied 24 valves — all certified, on time, 22% under budget.
Chemical plant in Louisiana uses CF8M (316 SS) OS&Y valves for corrosive sulfuric acid service. Result: 36-month service interval, no fugitive emissions.
📄 Want to read the full case studies? Our engineering team will share project details and test data.
Request Case Study Package →OS&Y stands for Outside Screw and Yoke. The threaded stem is located outside the valve body, so the stem rises visibly when the valve opens. This design prevents stem corrosion inside the flow path, reduces operating torque, and gives operators a clear visual of whether the valve is open or closed — critical for safety in water, oil, and steam systems.
Our OS&Y gate valves typically offer 15–25% cost savings compared to equivalent US or European brands, while meeting or exceeding the same material and test standards (ASME B16.34, API 600, API 598). We achieve this through vertical integration — in-house casting, machining, assembly, and testing — without sacrificing quality.
We provide ISO 9001:2015, CE/PED, API 6D (on request), NACE MR0175, and material traceability certificates (EN 10204 3.1). We also support ASME B16.34, MSS SP-25, and local code compliance. For FDA, FCC, VDE, SAA, or CCC requirements, please specify so we can include them in the quotation.
Standard lead time: 25–35 working days after deposit (FOB Tianjin, Shanghai, or Ningbo). For urgent orders, we offer express production in 15–18 days. Shipping cost to the USA (CIF Houston / Los Angeles) ranges approximately $200–$800 per cubic meter depending on valve size and quantity. We also offer DDP (Delivered Duty Paid) for hassle-free import.
Absolutely. We offer free samples (1–2 units) for qualified buyers. You only pay shipping. We also support small trial orders (5–10 units) to validate quality and fit before committing to full container orders. Money-back guarantee: if the valve doesn't meet specification, we'll replace it or refund — no questions asked.
We accept T/T (wire transfer), L/C (irrevocable letter of credit), PayPal (for samples), and Western Union. For first-time US customers, we typically require 30% deposit, 70% against copy of shipping documents. Flexible terms may be available after established relationship.
Yes. We stock spare stems, wedges, seats, gaskets, and packing for all standard OS&Y valve sizes. Our technical support team responds within 2 hours (email/WhatsApp) and we provide remote video inspection support. Warranty: 18 months from shipment against manufacturing defects.
"We installed 48 Thriveon OS&Y valves at our water treatment plant in Florida. They've been in service for 14 months with zero issues. The technical documentation was complete and compliant with our local codes. Our engineer team was impressed."
"The pricing beat our existing supplier by 22%, but we were worried about quality. We sent samples to an independent lab — they passed everything. Now we order regularly. Reliable partner."
"I've been in valve procurement for 20 years. Thriveon's OS&Y valves are the best value I've seen from China. The stem finish, seat hardness, and pressure test results are consistent. They understand the spec."
"We needed a custom 12" Class 600 OS&Y valve with extended stem for a remote pipeline station. Thriveon delivered in 5 weeks — other suppliers quoted 16. Saved our project timeline."
"Great communication throughout the order process. They provided photos and videos of the pressure test. The valves arrived well-packed and on time. Will order again."
Stop overpaying for inconsistent quality. Get a free quote, free sample, and technical data sheet within 24 hours.
⚡ Limited Offer: First-time US clients receive FREE express shipping on trial orders of 5+ valves. (Valid until May 31, 2026)
📧 Email: info@thriveonvalve.com | 🌐 www.thriveonvalves.com
🔒 100% Risk-Free: Money-back guarantee if valves don't meet spec. Privacy policy protects your data.
Ningjin Thriveon Valve Co., Ltd.
South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China
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Call us on:
+86-311-86935302
+86-311-86935302
Email Us:
info@thriveonvalve.com
South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China 
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