Material Selection And Principle Of Stainless Steel Fan-shaped Spray Nozzle

A stainless steel flat jet spray nozzle transforms pressurized liquid into a uniform fan-shaped pattern through a precisely machined flow guide plane that controls fluid expansion and direction. Available in SS304, SS316, or brass with male threaded connections (NPT or BSPT), the nozzle body features a contoured internal chamber that accelerates flow toward a slit-shaped orifice. Select a spray angle (0°-110°) matching application coverage requirements. For CIP applications, the ss spray ball with Ra ≤ 0.8μm finish and self-draining geometry ensures hygienic operation.

Flow Guide Plane and Spray Formation

The flow guide plane determines spray uniformity. This machined surface redirects fluid from the circular inlet to the elongated outlet without turbulence. The transition creates a coherent liquid sheet that breaks into droplets after leaving the orifice. The guide plane ensures even distribution across the spray width. Tolerances maintain ±2° of specified spray angle.

Key functions of the flow guide plane:

• 🎯 Redirects flow from circular to elongated geometry

• 💧 Creates a uniform liquid sheet

• 📐 Maintains consistent spray angle

• 🔧 Enables precise coverage control

Fluid Dynamics of Impingement

Pressurized liquid impinges on the guide plane at velocities determined by inlet pressure. The flow divides and spreads laterally, forming a thin film that exits through the orifice. The impingement point geometry and surface characteristics control the liquid film's radial flow region, determining spray width and impact pattern. For stainless steel nozzles, the guide plane's surface finish influences flow behavior and wear resistance.

Material Selection

Surface Finish and Cleanability

For hygienic applications, the ss spray ball requires internal surfaces polished to Ra ≤ 0.8μm (32Ra) to prevent bacterial adhesion. No threads are permitted on product-contact surfaces; connection is via slip-fit with retaining pin or tri-clamp. The spray ball valve design incorporates self-draining geometry for CIP compatibility. Stainless spray ball surfaces must withstand caustic and acid cleaning cycles without degradation.

Male Threaded Connection

Male threaded connections enable direct installation into female pipe fittings. Standard thread types include NPT (National Pipe Thread) for North American installations and BSPT (British Standard Pipe Taper) for European and Asian markets. Thread sealant or PTFE tape is required for leak-tight sealing. The male thread design facilitates easy replacement and orientation adjustment.

Flat Jet vs. Spray Ball Configurations

Flat jet nozzle:

• Produces a single, fan-shaped spray

• Focused impact for localized cleaning

• Pressure range: 2-50 bar

• Male threaded connection

Sanitary spray ball:

• Creates 360° spray pattern

• Covers larger tank areas

• Operating pressure: 2-4 bar

For tank cleaning, static spray balls offer reliability with no moving parts, though they require 2-3 times the liquid flow of rotating nozzles.

Installation and Orientation

The nozzle connects via male threaded NPT or BSPT fittings. Orientation determines the spray plane relative to the target. Overlap of 25-30% is required for uniform coverage when using multiple nozzles. The spray ball valve can be installed in any position with minimum supply line pressure to achieve required flow.

Performance and Flow Rate

Flow rate is a function of orifice size and operating pressure. For flat jet nozzles, capacity doubles with a pressure increase factor of about 1.4. The nozzle's K-factor relates flow to pressure. Spray angle increases with pressure up to the design limit.

Selection priorities for the spray ball:

1. Select SS316 for aggressive CIP chemicals; SS304 for water and mild media; brass for non-corrosive service

2. Specify Ra ≤ 0.8μm surface finish for hygienic applications requiring 3-A compliance

3. Confirm thread type (NPT or BSPT) matches existing pipe fittings

4. Verify spray angle and pressure range meet coverage requirements

5. Choose flat jet for localized cleaning; spray ball for tank coverage

The ss spray ball with male threads provides straightforward installation in existing pipe systems. Stainless spray ball designs with Ra ≤ 0.8μm meet 3-A Sanitary Standards for food and pharmaceutical processing.

Stainless Steel Flat Jet Spray Nozzle

• The characteristic of Flat Jet Spray Nozzle is that it can produce narrow Angle fan spray with high impulse force.
• The spray produces an evenly distributed spray with medium droplet size.
• Flat jet nozzle spray shape edge definition is very clear.
• Flat jet nozzle with outer pipe thread street integral design.
• Large, fluid channels reduce congestion.The carefully crafted diversion plane provides a uniform, high-impact spray shape.

Product Description