Three Piece Butt Weld Ball Valve
Product Details
Zhejiang Leadtek Fluid Technology Co., Ltd. is one of the most experienced manufacturers and suppliers of three piece butt weld ball valve in China. Please feel free to buy customized three piece butt weld ball valve at competitive price from our factory. Also, free sample is available.
Product Overview & Standards
The LEADTEK three Piece Butt Weld Ball Valve (Code: 30-0A210) is a full-bore, investment-cast stainless steel quarter-turn valve designed to API 608, rated to 1000 PSI, and inspected per API 598 and EN 12266-1. Its three-piece body construction - two end caps and a central body joined by studs and nuts - allows the internal components (ball, seats, and stem) to be fully accessed and serviced in-line without cutting or removing the valve from the pipeline, reducing both lifecycle cost and process downtime.
Both body ends feature butt weld connections (Face-to-Face per MFR STD), making this valve the preferred choice for permanent, high-integrity pipeline installations where threaded or flanged joints are not acceptable - including high-pressure process lines, corrosive chemical systems, hygienic food and pharmaceutical circuits, and new energy infrastructure. The valve is available in CF8 (304 SS equivalent) and CF8M (316 SS equivalent) body and ball materials, covering size range 1/4" through 4" (DN8–DN100). Seat materials - PTFE+15%GF and PTFE+20%CF - extend the operating temperature envelope from −40°C up to 200°C, making this valve equally at home in cryogenic and high-temperature service. All units pass the RoHS test as standard.
Key technical parameters at a glance - designed to meet international procurement standards.
Design Standard
API 608
Pressure Rating
1000 PSI
Face-to-Face
MFR STD
Inspection
API 598 / EN 12266-1
Body Material
CF8 / CF8M
Seat Material
PTFE+15%GF / PTFE+20%CF
Temperature Range
−40°C to 160°C / 200°C
End Connection
Butt Weld (F-F)
Size Range
1/4" – 4" (DN8–DN100)
Design Features
Every engineering detail in this three piece butt weld ball valve is optimized for long-term reliability in demanding industrial environments.
Back Seal Multiple Leakage Proof Design
Secondary sealing on the stem back seat ensures zero leakage even under packing failure, delivering higher system safety and dramatically reducing maintenance costs.
Seat Resilient Seal Design
The spring-loaded seat compensates for micro-surface irregularities on the ball, achieving bubble-tight shut-off - even after extended cycling service.
Packing Adjustable Without Disassembly
In-service packing adjustment eliminates planned downtime for routine stem seal maintenance - a key advantage for continuous-process industries.
Stem Anti-Ejection Design
A mechanical retention feature prevents blowout of the valve stem under high-pressure conditions, protecting personnel and maintaining system integrity.
Full Bore Design
The bore diameter matches the nominal pipe size, minimizing turbulence and pressure drop. Ideal for slurries, viscous fluids, and pigging operations where flow restriction is unacceptable.
Investment Casting Construction
Precision investment casting produces a denser, smoother internal surface compared to sand casting, improving flow characteristics and corrosion resistance while extending service life.
Three-Piece Serviceable Body
The three-piece construction allows full in-line inspection and seat replacement without cutting the weld. End bodies separate for access to the ball, seats, and stem - reducing total lifecycle cost.
Wide Media Compatibility
Rated for water, oil, and gas service. PTFE+15%GF seats are suitable to 160°C; PTFE+20%CF seats extend capability to 200°C - covering the majority of B2B industrial process requirements.
Bill of Materials
Two material configurations available: standard CF8/F304 and premium CF8M/F316 for enhanced corrosion resistance.
| No. | Part Name | Standard (CF8 / F304) | Premium (CF8M / F316) |
|---|---|---|---|
|
1 |
Body | CF8 | CF8M |
|
2 |
Ball | F304 | F316 |
|
3 |
Seat | PTFE+15%GF / PTFE+20%CF | |
|
4 |
Bonnet | CF8 | CF8M |
|
5 |
Spring Washer | SS304 | |
|
6 |
Nut | A2-70 | |
|
7 |
Stud | F304 | |
|
8 |
Stem | F304 | F316 |
|
9 |
Thrust Washer | PTFE+15%GF / PTFE+20%CF | |
|
10 |
Packing Washer | PTFE / PTFE+20%CF | |
|
11 |
Packing Gland | F304 | |
|
12 |
Nut | A2-70 | |
|
13 |
Spring Washer | SS304 | |
|
14 |
Handle | 304 | |
|
15 |
Handle Cover | PVC | |
Dimensional Specifications
All dimensions in millimeters (mm). Face-to-Face per MFR STD.
| Size | Ød (mm) | ØD (mm) | L (mm) | H (mm) | E (mm) |
|---|---|---|---|---|---|
| 1/4" | 11 | 15.5 | 65 | 50 | 95 |
| 3/8" | 12.5 | 17.5 | 65 | 50 | 95 |
| 1/2" | 15 | 22 | 70 | 52 | 105 |
| 3/4" | 20 | 27.5 | 75 | 56 | 105 |
| 1" | 25 | 34 | 85 | 73 | 135 |
| 1¼" | 32 | 43 | 100 | 78 | 135 |
| 1½" | 38 | 49 | 110 | 93 | 165 |
| 2" | 50 | 61.5 | 130 | 102 | 165 |
| 2½" | 65 | 77 | 165 | 134 | 240 |
| 3" | 76 | 90 | 190 | 143 | 240 |
| 4" | 100 | 115 | 220 | 172 | 300 |
Ød = bore diameter | ØD = body O.D. | L = face-to-face | H = installed height | E = handle length. Custom dimensions available upon request.
Typical Application Industries
The three piece butt weld ball valve is a preferred choice wherever welded joints are required for hygiene, pressure integrity, or corrosion performance.
Oil & Gas
High-pressure pipeline isolation and flow control for upstream, midstream, and downstream processes. CF8M grade preferred for sour service.
Chemical & Petrochemical
Corrosive media handling in reactors and transfer lines. Full bore and welded design eliminates crevice corrosion risk at connection points.
Food & Beverage
Hygienic process lines where threaded connections are prohibited. CF8M body and PTFE seat comply with typical food-contact material requirements.
Pharmaceutical
CIP/SIP-compatible piping systems. The smooth bore and weld-end design eliminates dead legs and contamination risk in sterile fluid transfer.
New Energy & Power
Energy storage cooling circuits, photovoltaic system piping, and power plant auxiliary systems requiring reliable on/off control at elevated pressures.
Semiconductor & High-Tech Manufacturing
Ultra-pure water and process chemical lines. Investment-cast stainless construction and RoHS compliance meet the strict material purity requirements of advanced manufacturing.
Why Source from LEADTEK?
Zhejiang Leadtek Fluid Technology Co., Ltd. - vertically integrated manufacturer since 2015, Changshan Industrial Park, Quzhou, Zhejiang.
30+
Years of Casting Experience
Founders began in stainless steel investment casting in 1994. Deep process know-how translates directly into tighter tolerances and fewer defects.
100+
Certified Ball Valve Variants
A dedicated R&D team has developed and certified over 100 ball valve configurations, holding 40+ national patents that underpin product reliability.
400+
CNC Machines On-Site
Full vertical integration across casting, machining, assembly, and testing in a 37,000 m² facility - no third-party sub-contracting on critical operations.
80+
Countries Served
Products shipped to Europe, Americas, Asia-Pacific, and the Middle East. A 20-person global marketing team provides localized pre- and post-sales support.
Certifications held by LEADTEK
- ISO 9001 · ISO 14001 · ISO 45001
- CE
- KC
- TS
- RoHS
- High-Tech Enterprise (China MIIT)
- Special Equipment Manufacturing License
- 40+ Patented Technologies
- 1 International Trademark
- 4 Domestic Trademarks
Mill Test Reports, pressure test certificates, and third-party inspection (SGS, BV, TÜV) available for project orders on request.
Frequently Asked Questions
Q: What is the difference between CF8 and CF8M, and which should I specify?
A: CF8 is the cast equivalent of 304 stainless steel and is suitable for most water, oil, and mild chemical service. CF8M is the cast equivalent of 316 stainless steel, offering superior resistance to chlorides, seawater, and many acids due to its molybdenum content. For food, pharmaceutical, marine, and chemical applications, CF8M (with matching F316 ball and stem) is the recommended choice. If you are unsure, share your process media and our engineers will advise the appropriate grade.
Q: What is the advantage of butt weld ends versus threaded or flanged connections?
A: Butt weld ends create a continuous, leak-free joint that is structurally stronger than threaded connections and has no gasket to fail like flanged joints. They are the preferred connection type in high-pressure, high-temperature, corrosive, and hygiene-critical applications because they eliminate crevices, reduce maintenance points, and provide maximum pressure integrity. The trade-off is that they require field welding during installation.
Q: Can the packing be replaced or adjusted without shutting down the line?
A: Yes. LEADTEK's three piece butt weld ball valve incorporates an adjustable packing design that allows the stem seal to be tightened or replaced without removing the valve from the pipeline. This significantly reduces unplanned downtime in continuous-process operations.
Q: What is the minimum order quantity (MOQ) and lead time?
A: MOQ is flexible and varies by size and material combination. Sample orders are accepted. Standard lead time for stocked configurations is typically 15–30 days; custom specifications may require 30–45 days. Contact our sales team for a specific quotation and delivery schedule based on your project requirements.
Q: Does LEADTEK provide material test reports (MTR) and pressure test certificates?
A: Yes. We provide material test reports (MTR/MTC) for body, ball, and stem materials, along with hydrostatic pressure test and seat leakage test certificates per API 598 / EN 12266-1 as standard. Third-party inspection and witness testing by internationally recognized bodies can be arranged upon request.
Q: Can LEADTEK supply actuated versions of this valve?
A: Yes. The three piece butt weld ball valve can be supplied with pneumatic or electric actuators for automated control applications. Please specify your actuator requirements (fail-safe position, supply pressure, signal type) when requesting a quote.
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