DN15 J21W-160p Welded/Industrial/High Pressure/NPT/RC/G Thread/Stainless Steel Needle Valve 304/316 Instrument Valve

Customization: Available
Media: Water
Material: Stainless Steel

Product Description

Basic Information
Model NO. J21W-160P Connection Form Thread
Driving Mode Manual Nominal Pressure Pn160
Channel Straight Through Type Structure Full Bore
Type Check Valve / Needle Valve Temperature Normal Temperature
End Connection NPT/BSPT/BSPP Specification DN6-DN25
Material Stainless Steel 304/316 HS Code 8481804090
Needle Valve Overview
Product Description

A needle valve is a precision-engineered component essential for high-accuracy fluid control systems. Designed to regulate flow with extreme precision, it features a slender, tapered needle that fits into a matched seat.

Needle Valve Detail 1
Needle Valve Detail 2
Needle Valve Detail 3
Key Technical Features
01. Premium Stainless Steel (304SS/316SS)

Manufactured from high-grade stainless steel, offering excellent corrosion and oxidation resistance. Ideal for water, oil, gas, and mildly corrosive media across a wide temperature range.

02. Precision M20×1.5 Threaded Connection

The metric fine thread ensures a superior seal, high vibration resistance, and ease of installation, even in high-pressure or confined space applications.

03. High Pressure Capacity (PN160)

Rated for nominal pressures up to 16 MPa (approx. 160 bar). The forged body construction prevents deformation or leakage under extreme conditions.

04. Ergonomic Operation

Designed for low operating torque. The valve stem provides clear tactile feedback, allowing operators to feel exactly when the valve is fully seated to prevent overtightening.

Technical Specifications
How It Works

The needle valve operates by rotating the stem, which moves the needle-shaped core vertically relative to the seat. As the gap increases, the flow rate rises; as the gap decreases, flow is restricted until it is completely cut off. This allows for fine-tuned adjustment of reagents, hydraulic oils, and gases in laboratories and industrial processing.

Internal Mechanism
Service & Quality Assurance

Pre-Sales: Technical consultation and model selection to maximize efficiency and minimize cost.

On-Sales: Timely delivery with strict quality inspections and supervision documents provided.

After-Sales: 12-month warranty from the date of acceptance. Comprehensive technical support and repair/replacement commitments under normal use conditions.

Frequently Asked Questions
What is the maximum pressure rating for this needle valve?
The J21W-160P model is rated for PN160, which corresponds to a nominal pressure of 16 MPa or approximately 160 bar.
What materials are available for the valve body?
The valve is primarily manufactured from forged 304 or 316 Stainless Steel, providing excellent resistance to corrosion and high temperatures.
Which thread sizes are supported?
Standard connections include M20×1.5 metric threads, but we also support NPT, BSPT, and BSPP thread standards for global compatibility.
Can this valve be used for gases as well as liquids?
Yes, needle valves are ideal for controlling the flow of various media including water, oil, gas, and other mildly corrosive fluids.
How long is the warranty period?
We provide a 12-month quality assurance warranty from the date of acceptance, covering any manufacturing defects under normal operating conditions.
Are custom sizes or specifications available?
Yes, our design team can provide reasonable improvements and customizations according to specific customer requirements and non-standard project needs.

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