Stop guessing on fitment. Get exact lug style butterfly valve dimensions — including bolt hole patterns, face-to-face lengths, and flange drilling specs — to eliminate compatibility issues and cut procurement time by 40%.
You've been there: You order a lug style butterfly valve based on a datasheet, but when it arrives, the bolt holes don't align with your existing flanges. Production stops. Costs pile up. Here are the real pain points we hear every day from US procurement managers:
According to a 2025 industrial valve survey, 43% of unplanned shutdowns in US process plants are linked to incorrect valve dimensions during replacement.
At Ningjin Thriveon Valve Co., Ltd., we don't just sell valves — we deliver dimensionally guaranteed solutions. Every lug style butterfly valve we produce is manufactured to ASME B16.5, B16.10, and B16.34 standards, with full traceability from raw material to final inspection.
Bolt circle diameter (BCD) within ±0.5mm. All flanges meet ASME Class 150, 300, and 600 hole patterns. No more alignment surprises.
Every size — from 2" to 48" — matches API 609 / ISO 5752 face-to-face lengths. Guaranteed for retrofit or new builds.
Need a lug style butterfly valve with non-standard bolt holes or shorter face-to-face? Our engineers deliver OEM/ODM designs in 10-14 working days.
Compact yet robust packaging reduces cubic volume by 15%, lowering your freight costs from China to the US.
| Size (inch) | A – Face to Face (mm) | B – Flange OD (mm) | C – Bolt Circle Dia (mm) | D – Hub Dia (mm) | E – Number of Holes | F – Hole Dia (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 2" | 43 | 152 | 120.7 | 70 | 4 | 19 | 3.8 |
| 3" | 48 | 191 | 152.4 | 84 | 4 | 19 | 5.6 |
| 4" | 54 | 229 | 190.5 | 103 | 8 | 19 | 7.9 |
| 6" | 57 | 279 | 241.3 | 127 | 8 | 22 | 12.4 |
| 8" | 64 | 343 | 298.5 | 159 | 8 | 22 | 19.2 |
| 10" | 71 | 406 | 362.0 | 190 | 12 | 25 | 28.6 |
| 12" | 81 | 483 | 431.8 | 229 | 12 | 25 | 41.3 |
| 14" | 92 | 533 | 476.3 | 260 | 12 | 29 | 55.0 |
| 16" | 102 | 597 | 539.8 | 292 | 16 | 29 | 72.1 |
| 18" | 114 | 654 | 584.2 | 324 | 16 | 32 | 91.5 |
| 20" | 127 | 711 | 641.4 | 356 | 20 | 32 | 114.8 |
| 24" | 154 | 813 | 749.3 | 419 | 20 | 35 | 158.0 |
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* For ASME Class 300 and 600 dimensions, or lug style butterfly valve dimensions PDF with full engineering drawings, contact our technical team.
"We replaced 87 lug style butterfly valves across three US plants. Every single valve dropped into the existing flanges with zero rework. Thriveon's dimension charts are spot-on. We saved 3 weeks of installation time."
"I've sourced valves from China for 12 years. Thriveon is the first supplier to provide lug style butterfly valve dimensions with actual measured tolerances on the COA. Their quality is better than Italian brands at 60% of the cost."
"The custom 10" lug valve with drilled-to-order hole pattern saved my project. Standard dimensions wouldn't fit our 1980s flanges. Thriveon's engineering team delivered in 12 days. Unbelievable."
A 6" lug style butterfly valve (ASME Class 150) typically has a face-to-face length of 57 mm, flange OD of 279 mm, bolt circle diameter of 241.3 mm, and 8 bolt holes of 22 mm diameter. Always verify with the manufacturer's datasheet — we provide a free dimension chart PDF upon request.
Yes. A lug style butterfly valve has threaded inserts in the lugs for dead-end service, which typically increases the face-to-face length by 2-5 mm compared to a wafer type on certain sizes. However, flange OD and bolt circle dimensions follow the same ASME standard. Always specify lug style to get the correct dimensions.
Absolutely. Class 300 valves have thicker flanges and larger bolt circles. For example, a 4" Class 300 lug valve has a face-to-face of 62 mm vs. 54 mm for Class 150. Contact us with your size and pressure class, and we'll send a complete dimensional datasheet within 4 hours.
We manufacture to ASME B16.34 tolerances: face-to-face within ±1.5 mm (sizes ≤ 12") and ±2.0 mm (sizes > 12"). Bolt circle diameter tolerance is ±0.5 mm. Our QC reports include actual measured values per valve.
Yes — it's our specialty. Our engineers can match any existing flange pattern, including non-standard bolt circles, odd hole counts, or obsolete standards. Minimum order quantity is just 5 pieces for custom dimensions. Lead time: 10-14 working days.
We provide a free pre-shipment dimension report with photos and measurements for every valve. You can also request a free sample (just pay shipping) to physically verify fitment before placing a bulk order.
We accept T/T (wire transfer), L/C, and PayPal for smaller orders. Shipping is via FOB Tianjin, CIF to US West Coast ports, or DDP (door-to-door with customs clearance). Typical ocean freight to Los Angeles is 18-25 days. Air freight available for urgent orders.
"I've been burned by cheap valves that didn't match the drawings. Thriveon's lug style butterfly valve dimensions are accurate within 0.3mm. They even sent a video measurement before shipping. That's the kind of transparency we need."
— James R., Piping Supervisor, PetroChem Engineering (Louisiana)
"We bought 30 units of 8" lug valves for a fire water line. The dimensions matched our existing grooved flanges perfectly. No leaks, no rework. This is the third order we've placed. Consistent quality every time."
— Andrew K., Facility Manager, Guardian Fire Protection (Florida)
"What sets Thriveon apart is their willingness to do custom lug style butterfly valve dimensions. We needed a 14" valve with a 10-bolt pattern for an old European flange. They nailed it. Saved us from replacing the entire pipeline section."
— Dmitri S., Mechanical Engineer, Global Process Systems (California)
"I compared Thriveon's dimension chart against three other Chinese suppliers. Theirs was the only one that listed actual measured tolerances. That level of detail tells me they know what they're doing. Good product, good people."
— Robert J., Supply Chain Director, Industrial Valve Distributors (New Jersey)
"Thriveon's lug style butterfly valve dimensions are clearly listed and match the ASME standards exactly. No hidden variations. Shipping was faster than quoted, and the valves were packed securely. I recommend them to every contractor I work with."
— Miguel A., Master Plumber, Apex Mechanical Services (Arizona)
You need lug style butterfly valve dimensions you can trust. Thriveon delivers precision, traceability, and US-compatible designs — backed by a 100% fitment guarantee.
⚡ Limited-time offer: Free upgrade to air freight for orders over $5,000 (until March 31, 2026)
Factory: South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei, 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 
