Contact Platform Support
Help CenterNeedle Valve With Fine Threaded Stem for Accurate Flow Control
Related Products
-
304 Stainless Steel Needle Valve With PTFE Seal for High-Pressure SystemsNegotiableMOQ: 1 Set -
High Durability Needle Valve for Harsh Environment ApplicationsNegotiableMOQ: 1 Set
-
Precision Engineered Needle Valve With Excellent Shut-Off PerformanceNegotiableMOQ: 1 Set
-
Industrial Grade Needle-type Flow Control Valve for High Pressure SystemsNegotiableMOQ: 1 Set
-
Eccentric Half Ball Valve for Water Treatment Plants, Anti-Corrosion Coating, PN10/16 RatingNegotiableMOQ: 1 Set
As a leading valve manufacturer certified under ISO9001, Shanghai Sote Valve Co., Ltd. delivers precision-engineered flow control solutions trusted across North America, Western Europe, and 12 other global markets. Our needle valve with fine-threaded stem represents decades of expertise in creating instruments for applications demanding micrometer-level flow accuracy. Engineered in Shanghai, this valve enables operators to achieve repeatable flow adjustments in critical processes where standard valves prove inadequate.
The core innovation lies in its 16 TPI (threads per inch) stem design, providing 8x finer adjustment than typical needle valves. This allows operators to make incremental changes as small as 0.01 GPM without pressure spikes. Unlike ball valves or gate valves that offer only coarse control, our solution maintains stable flow rates even with viscosity variations up to 500 cP. The precisely tapered needle tip and seat geometry create a linear flow characteristic curve (R²=0.98) across 10-90% opening positions.
Technical Specifications:
| Body Material | Brass ASTM B16 (standard), SS304/316 (optional) |
| Pressure-Temperature Rating | ASME B16.34 Class 150 |
| Leakage Class | ANSI/FCI 70-2 Class IV |
| Flow Coefficient (Cv) | 0.07 to 0.35 (size-dependent) |
| Stem Material | 17-4PH Stainless Steel with electroless nickel plating |
Key advantages for industrial users include:
- Zero-seepage shutoff achieved through lapped sealing surfaces (surface finish Ra 0.4μm)
- Vibration-resistant stem locking via integrated jam nut prevents calibration drift
- Bidirectional flow capability with symmetrical fluid passage design
- Maintenance-friendly packing system allows gland adjustment under pressure
In chemical dosing systems, our valves reduce concentration fluctuations to ±2% compared to industry average ±8%. For gas chromatography instruments, they enable carrier gas flow stability within 0.5% over 24-hour operations. The non-rotating stem design prevents packing wear while the blow-out proof stem ensures failsafe operation up to 150% rated pressure.
With installations across Oceania’s mining sector and Eastern Europe’s pharmaceutical industry, Shanghai Sote Valve has demonstrated reliability in extreme conditions. Our needle valves undergo 100% hydrostatic testing at 1.5x working pressure and stem torque verification. Supported by OHSAS18001-certified safety protocols, we deliver traceable quality with material certificates compliant with EN 10204 3.1.
Request a flow calibration test report to validate performance for your specific media. Contact our engineering team in Shanghai for:
- Custom stem travel lengths (10mm to 100mm)
- Specialized trim materials for corrosive media
- Panel mounting kits and multi-valve manifolds
Frequently Asked Questions:
Q1: What maintenance intervals are recommended?
A: Under clean service conditions, repacking is recommended every 5,000 cycles or 24 months. The packing nut design allows maintenance without valve removal.
Q2: Can this valve handle slurries?
A: Standard models are for clean fluids. Ask about hardened Stellite® tipped versions for slurries with particles below 100 microns.
Q3: Is the flow direction marked?
A: Flow direction arrows are laser-etched on all valves above 1/4" size. Smaller valves have directional markings upon request.
Q4: What is the stem rotation per 1% flow change?
A: Approximately 3.6° rotation per 1% Cv change due to 100:1 turndown ratio. Full documentation provided.
Q5: Are compatible handles available?
A: Yes, four-spoke handwheels (standard) or locking T-handles (optional) in various materials.
Q6: What thread standards are offered?
A: NPT (standard), BSPP, BSPT, SAE, and metric threads. Specify when ordering.
Q7: How is leakage performance verified?
A: Each valve undergoes bubble-tight seat test per MSS SP-61 using helium mass spectrometry.
Q8: Can I get samples for testing?
A: Evaluation units available for qualified buyers. Contact our Southeast Asia office for regional support.
Send Inquiry to This Supplier
You May Also Like
-
Eccentric Half Ball Valve for Pipeline Systems, Anti-Blowout Stem, Double Flange ConnectionNegotiableMOQ: 1 Set
-
High-Performance Eccentric Half Ball Valve, Double Flange End, Top-mounted Eccentric Half Ball ValveNegotiableMOQ: 1 Set
-
High Pressure Brass Hydraulic Manual Valve Static Balancing ValvesNegotiableMOQ: 1 Set
-
Low Price Wholesale Selling Rising Stem Gate ValveNegotiableMOQ: 1 Piece
-
Synthetic Rubber Flange Center Line Plate Butterfly Valve in Water PlantNegotiableMOQ: 1 Set
-
China Manufacturer Supply Direct Operating Reducing ValveNegotiableMOQ: 1 Piece
-
Reduced Pressure Small Pilot Valve for Industrial UsageNegotiableMOQ: 1 Piece
-
High-End Pressure Relief Small Pilot ValveNegotiableMOQ: 1 Piece
-
New Type Brass Pressure and Flow Regulating Control Valve, Static Balance ValveNegotiableMOQ: 1 Set
-
Wholesale Two-Piece Internal Wire Stainless Steel Ball ValveNegotiableMOQ: 10 Sets
