The Extended Stem Butterfly Valve from Shaanxi Xixian New Area Zhongcheng Machinery Manufacturing Co., Ltd. delivers enterprise-grade flow control for oilfield mud circulation and solid control systems. Engineered with professional extended stem design, our valve features abrasion-resistant construction and high-performance sealing specifically for muddy medium handling.
Perfect for high-mounted pipeline operation, this valve combines flexible control with proven anti-leakage and anti-blockage performance. Our manufacturing facility spans 6,300 square meters with an annual capacity of 200 sets. Each unit is ISO 9001/14001/45001 certified and approved by HSE, TÜV, and BV. Custom stem lengths range from 0.5 to 3 meters, matching your specific tank depth and platform height requirements.
Oilfield solid control environments demand specialized valve solutions. Standard butterfly valves often require operators to climb atop mud tanks or navigate difficult spaces for routine adjustments.
Our extended stem configuration solves this challenge effectively. The elongated drive shaft relocates the control handle from pipe-level to walkway or ground-level positions. This means you can operate valves mounted on high tanks without leaving safe working platforms.
The design addresses three critical pain points. First, it enhances accessibility in crowded tank farms where piping clusters make valve access difficult. Second, it improves operator safety by eliminating hazardous climbing. Third, it streamlines workflow during high-frequency flow adjustments common in drilling operations.
Field installations consistently show reduced incident rates. Your team spends less time in precarious positions and more time maintaining system performance.
| Parameter | Specification |
|---|---|
| Valve Type | Butterfly valve with extended stem |
| Nominal Diameter | DN50 - DN600 (2" - 24") |
| Pressure Rating | PN10, PN16, Class 150 |
| Stem Extension Length | 0.5m - 3m (customizable) |
| Valve Body Material | Ductile iron, Carbon steel, Stainless steel |
| Disc Material | Stainless steel 304/316 |
| Seat Material | NBR (abrasion-resistant), EPDM, Viton |
| Stem Material | 17-4PH, 316SS |
| Operating Temperature | -20°C to +120°C |
| Medium | Drilling mud, slurry, water-based fluids |
| Operation Mode | Manual lever, gearbox, pneumatic/electric actuator |
| Connection Type | Wafer, lug, flanged |
| Structural Features | Short design, full flow, zero leakage; 90° on-off, easy operation |
| Compliance Standards | ISO 9001/14001/45001, API 609, HSE |
| Certification Bodies | TÜV, BV, HSE approved |
In solid control systems, piping installations frequently occupy hard-to-reach zones. Valves positioned on tank tops or behind equipment clusters create accessibility challenges for your operators.
The extended stem elevates the operating handle to platform or walkway level. This eliminates repeated climbing and bending. Your maintenance team gains instant access without special positioning equipment.
During high-tempo drilling phases, quick flow adjustments become routine rather than time-consuming tasks. This design improvement directly translates to smoother operations and reduced downtime.
Safety regulations in oilfield environments demand rigorous risk mitigation. Valves mounted at elevation traditionally require workers to access slippery tank surfaces or elevated platforms.
Our Extended Stem Butterfly Valve enables ground-level operation for high-mounted installations. This design minimizes slip and fall risks in environments where mud residue creates hazardous walking surfaces.
The configuration fully complies with HSE (Health, Safety, and Environment) standards. You reduce incident exposure while maintaining full system control capability.
Drilling fluids contain aggressive chemical additions and a high solids content. Under these circumstances, standard valve components deteriorate quickly, resulting in early failure and expensive replacements.
Our valves have stainless steel discs and NBR seats that are resistant to abrasion. These materials do not lose performance when exposed to abrasive muck on a regular basis.
The protective stem sleeve prevents medium leakage from corroding critical drive components. This extended service life reduces your total cost of ownership significantly.
Solids control sites generate substantial mechanical vibration from shale shakers, pumps, and centrifuges. Conventional extended stems can suffer from torque loss or binding under these conditions.
We utilize a sturdy sleeve with self-lubricating bushings to contain the enlarged stem. This arrangement guarantees accurate torque transfer without deviation caused by vibration.
The result is consistent shutoff performance and responsive flow modulation. Your operators gain reliable control even during high-vibration operational phases.
This valve specifically serves high-position mud circulation pipelines within solid control systems. Typical installations include:
Mud Tank Interconnections: Managing flow between primary separation tanks, intermediate holding tanks, and active circulation systems. The extended stem allows operators to adjust flow from platform walkways rather than tank tops.
High-Mounted Discharge Lines: regulating the discharge from centrifuges or shale shakers above tank level. During normal adjustments, ground-level operation removes the requirement for ladder access.
Crossover Piping Systems: Directing mud flow between parallel processing trains. Quick valve adjustment capability enables rapid system reconfiguration without operational shutdown.
Emergency Bypass Lines: Providing manual shutoff capability for emergency flow diversion. The accessible handle location ensures rapid response during upset conditions.
Your solid control system benefits from consistent flow regulation while your team maintains safe positioning throughout operations.
We recognize that each drilling site presents unique configuration requirements. Our engineering team provides flexible customization to match your specific installation parameters.
Stem Length Customization: Extension options range from 0.5 meters to 3 meters based on your mud tank depth or platform height. We verify dimensions during the design phase to ensure precise fit.
Material Selection: Choose from ductile iron, carbon steel, or stainless steel body construction depending on your fluid characteristics and environmental conditions. Seat materials adjust to match chemical compatibility requirements.
Actuation Options: Manual lever operation suits sites with frequent adjustments. Gearbox configurations handle larger valve sizes. Pneumatic or electric actuators integrate with automated control systems.
Connection Configurations: Wafer, lug, or flanged end connections accommodate your existing piping infrastructure without requiring system modifications.
Installation support includes detailed engineering drawings, component diagrams, and comprehensive operation manuals. Our technical team provides remote guidance during commissioning to ensure optimal performance from startup.
Every valve ships with a one-year warranty covering manufacturing defects. Post-warranty technical support remains available through our service network to address field questions or application challenges.
Manufacturing quality follows strict international standards to ensure reliable field performance. Our production facility maintains ISO 9001 Quality Management System certification, ISO 14001 Environmental Management System certification, and ISO 45001 Occupational Health and Safety Management System certification.
Each valve undergoes comprehensive testing before shipment. Stem concentricity verification ensures perfect alignment for smooth torque transmission. Hydrostatic pressure testing confirms shell and seat integrity per API 598 protocols.
Torque testing at full extension validates that break-away and running torque meet specifications. This prevents field surprises where actuators prove undersized or manual operation becomes unexpectedly difficult.
Third-party inspections from TÜV, BV, and HSE auditors validate manufacturing processes and final product compliance. These independent verifications provide assurance that your valves meet stated performance criteria.
Our quality control extends beyond factory testing. We provide traceability documentation including material certifications, test records, and compliance declarations to support your equipment qualification requirements.
Q: How do I specify the correct stem extension length for my application?
A: Measure the vertical distance from your pipe centerline to the desired operating position, typically a walkway or platform surface. Add 200-300mm for comfortable handle positioning. Our engineering team reviews your dimensions during order confirmation to verify suitability.
Q: Can the valve handle high-solids drilling mud without clogging?
A: Yes. The butterfly disc design offers minimal flow restriction compared to gate or ball valves. Combined with abrasion-resistant seating, the valve maintains clear flow paths even with high-density mud containing sand and cuttings.
Q: Does the extended stem affect response time during emergency shutoff?
A: Properly designed extended stems with internal guide bushings maintain rapid shutoff capability. Our torque testing validates consistent performance. For critical emergency service, we recommend pneumatic or electric actuation for fastest response.
Q: Are replacement parts available for field maintenance?
A: Yes. We stock replacement seats, stem packing, and bushings for immediate shipment. Most wear components are field-replaceable without removing the valve from the pipeline. Detailed maintenance procedures are included with your documentation package.
Q: How does this valve compare to gate valves for mud service?
A: Butterfly valves offer faster operation, lower torque requirements, and reduced weight compared to gate valves. The quarter-turn operation provides quicker flow adjustment. For on-off service where throttling isn't required, this design delivers superior cost-efficiency.
Ready to improve your solid control system safety and efficiency? Our Extended Stem Butterfly Valve is prepared to discuss your specific requirements and recommend optimal valve configurations.
Contact Us today at oliver@zcgukong.com for technical specifications, quotations, and delivery timelines.
February 28, 2024
Anonymous, On-site Drilling Engineer, Domestic Oilfield Operator
Zhongcheng’s mud circulation system has been running continuously at our Xinjiang desert site for 8 months, with no major breakdowns or costly operational halts. Its solid build and wear-resistant components have helped keep our maintenance and repair costs in check. In the harsh downhole conditions here, its durability reliably meets our daily operational needs.
January 15, 2025
Anonymous, Technical Project Lead, International Oilfield Service Provider
We had an urgent need for a custom mud zero-discharge system for a coalbed methane project, and Zhongcheng delivered. Their engineering team locked in the designand shipped the full system in 45 days, and it integrated perfectly with our existing ZJ50 rig. On-site commissioning even finished ahead of schedule. Their technical know-how and speed are exactly what we need for time-sensitive projects.
February 28, 2024
Anonymous, On-site Drilling Engineer, Domestic Oilfield Operator
Zhongcheng’s mud circulation system has been running continuously at our Xinjiang desert site for 8 months, with no major breakdowns or costly operational halts. Its solid build and wear-resistant components have helped keep our maintenance and repair costs in check. In the harsh downhole conditions here, its durability reliably meets our daily operational needs.
January 15, 2025
Anonymous, Technical Project Lead, International Oilfield Service Provider
We had an urgent need for a custom mud zero-discharge system for a coalbed methane project, and Zhongcheng delivered. Their engineering team locked in the designand shipped the full system in 45 days, and it integrated perfectly with our existing ZJ50 rig. On-site commissioning even finished ahead of schedule. Their technical know-how and speed are exactly what we need for time-sensitive projects.
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