FAQ

Low pressure misting nozzle over 1000 pcs.
High pressure misting nozzle 1000 pcs.
Stainless steel tube fittings 100 pcs each item.
Nylon tube 1000 meters.
Stainless steel tube 1000 meters.

For small orders that delivery via express, such as DHL/FEDEX/UPS, we need 100% TT payment before delivery.

For orders those by sea, 40% TT deposit, the balanced against copy of BL.

Yes, with the support of high precisely CNC machines, we do OEM for customers.

For small orders, usually take 5-7 days.
For big orders, about 30 days.

With 10 years experience in misting products area, we win our customers by quality, for misting nozzle, we testing the spray effect by manual testing, for low pressure misting nozzle by auto testing machine, stainless steel tube by detector to check the welding seam, for stainless steel connect tube fittings, check the burs piece by piece.
All these processes are for supplying good quality for customers.

The core culture of our company is based on integrity and honesty.
Holding the advanced status in technology, quality, and after sale servicing of the products is our base for development.

Misting nozzles should be cleaned every 3-6 months to ensure optimal performance. Regular cleaning prevents clogging and maintains a fine mist.

A misting nozzle operates by converting liquid water into a fine spray through a process called atomization.

The pressure required for a mist nozzle depends on the desired droplet size, application, and nozzle design.
Longer tubing or multiple nozzles may require higher pressure to maintain flow consistency.

Misters can be water-efficient if designed and used properly, but their water consumption depends on several factors, including the system type, nozzle design, climate, and usage habits.

The lifespan of brass misting nozzles depends on several factors, including water quality, system pressure, usage frequency, and maintenance practices.
1.Water Quality:
Hard Water (high mineral content): Calcium, magnesium, and other minerals can clog nozzles and corrode brass over time. Frequent scaling shortens lifespan.
Soft Water: Less scaling and corrosion, extending nozzle life.
Solution: Install a water softener or inline filter to reduce mineral buildup.
2.System Pressure:
High-pressure systems (500–1,500+ PSI) wear down nozzles faster due to constant stress. Brass is durable but not immune to erosion at extreme pressures.
Low-pressure systems (20–250 PSI) are gentler on nozzles.
3.Usage Frequency:
Daily or continuous use accelerates wear.
Occasional use (e.g., weekends or events) preserves nozzles longer.
4.Environmental Exposure:
Saltwater, chlorine, or chemicals (e.g., in pools or agricultural sprays) corrode brass faster.
Outdoor exposure to UV light or extreme temperatures can degrade materials over time.
5. Maintenance:

Poor Maintenance: Clogged nozzles reduce efficiency and strain the system, leading to premature failure.
Regular Cleaning: Flushing the system, descaling nozzles, and replacing filters can double or triple nozzle lifespan.

Brass nozzles are a good choice for low- to medium-pressure applications with proper maintenance and soft water. However, they may not be ideal for high-pressure systems, harsh environments, or hard water conditions, where stainless steel or ceramic nozzles would perform better. The decision ultimately hinges on balancing cost, durability, and operational requirements.

Choosing the right misting nozzle depends on your specific needs, system setup, and environmental conditions.

1. Application
Cooling: Opt for high-pressure nozzles (500–1,500 PSI) producing droplets 10–30 microns for rapid evaporation.
Humidification (greenhouses, nurseries): Medium-pressure nozzles (250–500 PSI) with 30–50 micron droplets to avoid over-saturation.
Dust Suppression: Ultra-fine mist (5–20 microns) at high pressure to bind dust particles.
Decorative Misting: Low-pressure nozzles (20–100 PSI) for visible mist with minimal water use.

2.Pressure Compatibility
Low-Pressure Systems (20–250 PSI): Brass or plastic nozzles work well (e.g., garden hoses, basic misting kits).
Medium-Pressure Systems (250–500 PSI): Brass or stainless steel nozzles.
High-Pressure Systems (500–1,500+ PSI): Stainless steel or ceramic nozzles (durable under extreme pressure).

3.Material
Brass: Affordable and corrosion-resistant for low/medium pressure but prone to scaling in hard water.
Stainless Steel: Durable, corrosion-proof, and ideal for high-pressure or harsh environments (saltwater, chemicals).

By balancing these factors, you'll optimize misting efficiency, minimize water waste, and extend nozzle lifespan. For most residential cooling, stainless steel high-pressure nozzles (500–1,000 PSI) strike the best balance of performance and durability.

Misting increases humidity optimally in dry, warm, and still environments. It's a temporary solution, with effectiveness diminishing in cool, humid, or well-ventilated areas. Balance usage to avoid moisture-related issues.

Choosing the right misting nozzle depends on your specific needs, such as the purpose (cooling, gardening, humidifying), water pressure, droplet size, and the environment.
Match nozzle specs to your pump's pressure and flow rate.
Prioritize durability (material) based on environment.
Test droplet size and coverage for your application.

Yes, all stainless steel tube fitting in Roundphi fitting company could be customized on size and OEM service.

Maintaining and cleaning stainless steel check valves is essential for ensuring their longevity and proper function. Here's a structured approach to do so effectively:
1. Regular Inspections

Frequency: Monthly or quarterly, depending on usage intensity and environmental conditions.

Check For: Wear, leaks, corrosion, and proper sealing. Inspect moving parts (hinge, spring, disc) and seals for damage.

2. Lubrication

When Needed: Consult the manufacturer's manual. Lubricate hinges, springs, or other moving parts with a compatible lubricant (e.g., silicone-based) to ensure smooth operation.

3. Cleaning Procedures

Exterior: Use mild soap, water, or a stainless steel cleaner. Avoid abrasive pads; opt for soft cloths/sponges to prevent scratching.

Interior: Disassemble the valve (if possible) and soak components in a descaling solution (e.g., diluted vinegar or citric acid) to remove mineral deposits. For stubborn debris, ultrasonic cleaning may be effective.

Fluid Compatibility: Ensure cleaning agents do not contain chlorides or harsh chemicals that could corrode stainless steel.

4. Debris Removal

Flushing: Regularly flush the system to prevent sediment buildup. Use filters upstream to minimize debris entry.

5. Corrosion Prevention

Passivation: If corrosion appears, consider passivation using citric or nitric acid solutions to restore the protective oxide layer. Always follow safety guidelines.

Environment: Avoid exposure to chlorides or salty conditions. Rinse valves thoroughly after exposure to corrosive fluids.

6. Component Replacement

Worn Parts: Replace worn seals, springs, or discs promptly. Keep spare parts on hand for common wear items.

7. Testing Post-Maintenance

Functional Test: After reassembly, test the valve under operational conditions to ensure proper sealing and flow direction. Conduct pressure tests if necessary.

8. Documentation & Safety

Records: Log maintenance dates, replaced parts, and observations for future reference.

Safety: Isolate and depressurize the valve before maintenance. Use PPE (gloves, goggles) when handling chemicals.

9. Manufacturer Guidelines & Installation

Follow Manuals: Adhere to specific instructions for valve type (swing, lift, ball) and application (e.g., corrosive fluids).

Alignment: Ensure proper installation to avoid stress on the valve, which can lead to premature wear.

10. Storage

Spare Valves: Store in a dry, clean environment. Use protective coatings if long-term storage is required.

By systematically addressing each aspect-from inspection to testing-you can maintain the efficiency and durability of stainless steel check valves, tailored to their specific design and operational context.

Use a ferrule (ring) that compresses between the fitting body and the tube when the nut is tightened, creating a seal.
Two-piece ferrules (front and back) or single-piece ferrules may be used, depending on the design.

Key features:
Tools: Requires a wrench or spanner; no special equipment (e.g., soldering, threading).
Pressure rating: Suitable for low to high pressure .
Advantages:
Quick installation, reusable, and suitable for thin-walled tubing.
No need for welding, reducing the risk of heat damage to the tube.

Disadvantages:
Not ideal for high-vibration or cyclic loading applications (ferrules may loosen over time).
Requires precise tube cutting and deburring for a reliable seal.

The fitting is permanently joined to the tube via welding

Advantages:
Strong, leak-tight permanent joints; ideal for high-stress or high-temperature use.
No mechanical components (e.g., ferrules) to fail under extreme conditions.

Disadvantages:
Requires skilled welders and proper post-weld heat treatment (PWHT) for certain alloys to prevent corrosion (e.g., sensitization in 304/316).
Not easily (non-reusable) and may require specialized equipment.