Starting from July 2025, we will launch new WN misting products. The old series will discontinued after they are sold out. Thank you for your understanding.

 
Total : 4

Classic Sprayers

WULI Classic Power Sprayer Series delivers industrial-grade performance with flow rates from 7 to 182 L/min (1.8–48.0 GPM) across the 25, 45, 51, and 160 series. Engineered and manufactured in Taiwan with ductile iron manifolds (cylinders) and heavy-duty triplex plunger systems, these pumps offer exceptional pressure stability and high durability for orchard spraying, crop protection, and commercial washing.

Key Features & Technical Advantages

  • Ductile Cast Iron Cylinder (Manifold): Heavy-duty construction built to withstand high pressure, chemical corrosion, and daily continuous use.
  • Dual Plunger Options:
    • Stainless Steel Plungers: Precision-machined, corrosion-resistant, and cost-effective standard choice.
    • Ceramic Sleeve Plungers: Ultra-hard industrial ceramic that reduces friction, dissipates heat rapidly, and extends seal lifespan under severe operating conditions.
  • Air Chamber & Valve System Options:
    • W Series (Cast Iron Chamber + Safety Relief Valve): Heavy-walled design for vibration damping, pressure smoothing, and shock absorption.
    • WL Series (Stainless Steel Chamber + Safety Relief Valve): 100% rust-proof chamber, ideal for aggressive liquid fertilizers, chemical sprays, and continuous liquid transfer.
    • AS Series (Chamberless + Automatic Unloader Valve): Instantly bypasses liquid and drops manifold pressure to zero when the spray gun is closed, eliminating line pressure, protecting hoses, and lowering engine/motor load.
  • Reliable Triplex Plunger Drive: Time-tested 3-piston mechanism delivers smooth fluid delivery with low mechanical vibration and easy routine servicing.
  • Wide Flow Range (1.8–48.0 GPM / 7–182 L/min): A versatile lineup (25, 45, 51, 160 series) tailored for everything from greenhouse misting to large-scale crop spraying and bulk water transfer.

Standard Sprayers vs. WULI Classic Series

FeatureStandard Commercial SprayersWULI Classic Series (W / WL / AS)
Pump Head / Cylinder Thin aluminum or gray iron prone to rusting, pressure stress cracks, and internal erosion. Ductile iron manifold with high tensile strength. Choose W (shock absorbing), WL (rust-proof chamber), or AS (chamberless) configurations.
Plungers & Seals Rough-machined metal plungers that cause rapid packing seal wear and leakage. High-precision stainless steel or ultra-smooth ceramic sleeves engineered to minimize friction and extend seal service life.
Pressure Regulation Basic manual valves; prone to pressure spikes, overheating, and hose bursts when guns shut off. Select AS Series (Automatic Unloader) for spray gun duty, or W/WL Series (Safety Relief Valve) for continuous pumping and liquid conveyance.
Manufacturing & Parts Inconsistent quality control with non-standard replacement parts. 100% Engineered & Made in Taiwan with standardized spare parts for reliable long-term global maintenance.

Selection Guide: How to Choose the Right Classic Model

Step 1: Choose Model by Flow Rate Demand

  • 25 Series (1.8–4.8 GPM / 7–18 L/min): Compact capacity for greenhouses, small orchards, and light washing applications.
  • 45 Series (4.2–10.0 GPM / 16–38 L/min): Mid-range capacity for fruit orchards, tea plantations, and farm livestock disinfection.
  • 51 Series (7.6–15.3 GPM / 29–58 L/min): Heavy-duty output for commercial crop protection, multi-gun spraying, and long-distance water conveyance.
  • 160 Series (20.6–48.0 GPM / 78–182 L/min): Ultra-high flow for commercial agricultural spray booms and large-scale liquid transfer.

Step 2: Select Valve System & Plunger Material

  • Air Chamber & Valve System Options:
    • W Series: Cast Iron Chamber + Safety Relief Valve (durable, vibration damping).
    • WL Series: Stainless Steel Chamber + Safety Relief Valve (rust-proof, ideal for liquid fertilizer and chemical spraying).
    • AS Series: Chamberless Design + Automatic Unloader Valve (drops pressure to zero instantly when spray gun trigger is released).
  • Plungers: Choose Stainless Steel (durable standard choice) or Ceramic Sleeve (extreme abrasion resistance for long hours).
ModelFlow RatePressure RangeValve ConfigurationsPrimary Applications
25 Series 1.8–4.8 GPM
(7–18 L/min)		 280–710 PSI
(20–50 kgf/cm²)		 W / WL (Safety Valve)
AS (Unloader Valve)		 Greenhouses, small orchards, light pressure washdown.
45 Series 4.2–10.0 GPM
(16–38 L/min)		 280–710 PSI
(20–50 kgf/cm²)		 W / WL (Safety Valve)
AS (Unloader Valve)		 Medium orchards, crop protection, livestock farm sanitation.
51 Series 7.6–15.3 GPM
(29–58 L/min)		 280–710 PSI
(20–50 kgf/cm²)		 WL (Safety Valve)
AS (Unloader Valve)		 Large agricultural acreage, multi-gun spraying, long-distance water transfer.
160 Series 20.6–48.0 GPM
(78–182 L/min)		 280–710 PSI
(20–50 kgf/cm²)		 WL (Safety Valve)
AS (Unloader Valve)		 High-volume commercial farming booms and industrial high-flow pumping.

Frequently Asked Questions (FAQ)

Q: What is the main difference between WULI W, WL, and AS Series power sprayers? The primary distinction lies in the air chamber and valve configuration: W Series features a cast iron chamber with a Safety Relief Valve for shock absorption; WL Series utilizes a rust-proof stainless steel chamber for spraying liquid fertilizers; and AS Series features a chamberless design with an Automatic Unloader Valve that drops pressure to zero when trigger guns are closed.
Q: When should I choose the AS Series (Automatic Unloader Valve) over standard safety valve models? Choose the AS Series if you frequently use spray guns with trigger shut-offs. When the trigger is released, the unloader valve automatically bypasses fluid back to the source and drops internal line pressure to zero, preventing hose ruptures, saving energy, and extending pump life.
Q: What are the benefits of choosing Ceramic Sleeve Plungers over Stainless Steel? While standard Stainless Steel plungers offer great corrosion resistance and affordability, Ceramic Sleeve Plungers feature extreme surface hardness and lower friction. They dissipate operational heat rapidly, drastically reducing packing seal wear and doubling service life under intense commercial duty.