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Needle Valve Manufacturer in India – Speciality Valve
Speciality Valve is a Needle Valve Manufacturer in India that designs and supplies precision-engineered valves for accurate flow regulation in low-flow and high-pressure systems. Our needle valves are built for reliability, leak-proof performance, and long service life in process control and instrumentation lines. Manufactured in accordance with ASME, API, and ISO standards, these valves are widely used across the oil and gas, chemical, power, and instrumentation sectors.
Function & Working
A needle valve controls the flow of fluids through a small orifice using a finely threaded stem and tapered needle-shaped plunger. When the handwheel is rotated, the plunger moves gradually toward or away from the seat, allowing precise adjustment of the flow rate. This design provides smooth modulation and tight shut-off, making it ideal for applications that demand accurate flow control, sampling, or calibration.
Advantages
Precise flow regulation with minimal leakage
Compact, corrosion-resistant construction
Suitable for both high pressure and high temperature conditions
Smooth and repeatable control for low flow rates
Long-lasting sealing integrity with minimal maintenance
Types of Needle Valves
Inline Needle Valve – Straight pattern for compact piping installations
Angle Needle Valve – 90° configuration for easy access and directional flow change
Bar Stock Needle Valve – Machined from solid bar for strength and pressure handling
Forged Needle Valve – Enhanced durability for severe service and high-pressure systems
Industries Served
Oil and Gas Processing
Petrochemical and Refining Plants
Chemical and Pharmaceutical Industries
Power Generation and Steam Systems
Aerospace and Automotive Sectors
Hydraulic and Pneumatic Systems
Laboratory and Instrumentation Equipment
Materials (Body, Stem, and Seat)
| Component | Material | Standard / Grade | Typical Application |
|---|---|---|---|
| Body | SS316 / SS316L / SS304 | ASTM A276 / A479 | General industrial and instrumentation service |
| Body | Duplex / Super Duplex (F51 / F53 / F55) | ASTM A182 / A890 | Offshore and chloride-rich applications |
| Body | Inconel 625 / Monel / Hastelloy | ASTM B564 | Corrosive and high-temperature systems |
| Body | CF8 / CF8M | ASTM A351 | Steam and process media |
| Stem | SS316 / SS410 / Monel | ASTM A276 | Strength and wear resistance |
| Seat | Metal-to-metal or Soft-seated (PTFE, PEEK) | — | Leak-tight sealing under pressure |
Technical Specifications
Design Standards: ASME B16.34, API 598, ISO 5208
Size Range: DN15 – DN50 (½″ – 2″)
Pressure Ratings: PN10 – PN450 / Class 150 – 2500 / up to 6000 psi
Temperature Range: –29 °C to +400 °C (depending on material and seat type)
End Connections: Threaded (NPT / BSP), Socket Weld (SW), Butt Weld (BW)
Operation: Handwheel operated, precision stem design for fine adjustment
Key Features
Leak-tight sealing for gas and liquid service
Compact body design for panel or inline mounting
Backseat arrangement for stem packing protection
Optional bonnet vent for pressure relief
Available in straight and angle patterns
High-pressure design suitable for up to 6000 psi