WF-FQ11-4

1. Product Overview

2. Premium Technical Specifications

• Body Material: 304 stainless steel precision casting, matte passivated anti-rust finish, food & light marine sanitary compliant
• Connection Standard: Symmetrical BSP / NPT internal thread, available sizes DN15~DN50
• Sight Window: Thick high-pressure resistant round borosilicate glass, 270° vertical full top viewing without blind spots
• Indicator Core: Dual-color PP floating ball, light weight, corrosion resistant, floats up with medium flow
• Sealing Structure: Single-layer EPDM / FKM O-ring seal; EPDM for water & food media, FKM for weak solvent & brine
• Rated Pressure: PN16 standard; PN20 reinforced high-pressure version optional
• Operating Temperature: -10℃ ~ +120℃
• Flow Channel: Full straight full-bore cavity, zero extra pressure drop, smooth inner wall reduces residue adhesion
• Structural Feature: Compact integrated threaded T-body, threaded lock top glass cover, fully disassemblable for float ball cleaning without pipeline removal

3. Core Competitive Advantages

1. Integral Cast Anti-Corrosion Stainless Steel Mini Cylinder Body
   Seamless precision casting eliminates internal stagnant dead zones, compact cylindrical design occupies minimal installation space. Matte passivation effectively prevents rust under humid and weak salt fog environments; optional 316 material for stronger coastal anti-corrosion performance.
2. Universal Internal Thread Quick Screw Installation
   Symmetric standard internal threads fit all common threaded pipe fittings, no welding or flanges required, extremely convenient for small branch pipeline assembly, greatly shortening construction time.
3. Dual-Color Float Ball Intuitive Flow Visualization
   Distinct red & blue float balls create high contrast against clear glass, easy to observe flow state even from a distance. When medium flows, the ball rises; no flow means the ball sinks to the bottom, simple and reliable without complex dial or moving paddle.
4. Zero Pressure Loss Full-Bore Unobstructed Flow Path
   No protruding obstacles inside the cavity, original pipeline flow capacity fully retained, perfectly suited for low-flow low-pressure micro circulation pipelines.
5. Chemical-Inert Lightweight Float Ball Assembly
   PP floating ball resists weak acid, alkali and saltwater erosion, lightweight sensitive response to tiny flow changes, no jamming or sticking under long-term continuous operation.
6. Snap-On Threaded Top Cover Easy Maintenance
   Threaded locking top cover can be unscrewed by hand without tools, quickly take out float ball to flush limescale, fertilizer sediment and organic sludge, convenient regular maintenance.
7. Ultra-Compact Space-Saving Mini Layout
   Small cylindrical threaded structure fits densely arranged instrument racks, clean room tiny branch lines, narrow yacht engine room piping where large split sight glasses cannot be installed.
8. Simple Durable Low-Failure Design
   Only one moving part (float ball), no spring, pivot or fragile swing components, ultra-low failure rate, long service life for 24-hour continuous working conditions.

4. Global Cross-Industry Application Scenarios

• HVAC & Central Heating Industry: Building heating branch water threaded pipelines, boiler auxiliary cooling small circulation lines, solar hot water auxiliary circulation tubing; compact size matches heating equipment narrow installation space.
• Light Fine Chemical Industry: Low-concentration neutral solvent threaded branch pipelines, laboratory micro reagent delivery tubing, water-based coating circulation small loops; stainless steel body avoids medium contamination.
• Precision Large-Scale Agriculture: Greenhouse nutrient solution branch irrigation threaded lines, farm small dosing auxiliary pipelines, seedling watering sub-lines; anti-corrosion float ball resists weak fertilizer liquid erosion.
• Yacht & Coastal Light Marine Systems: Small yacht engine room cooling threaded circulation lines, coastal aquaculture low-salinity water auxiliary piping, fresh water circulation sub-loops; 304 stainless steel withstands weak coastal salt fog splash.
• Auxiliary Supporting Fields: Industrial pure water pretreatment small branch pipelines, fire protection micro clean water threaded lines, mechanical equipment cooling auxiliary circulation tubing.

5. Customization Support Service

1. Material: Standard 304 stainless steel, upgrade to 316 marine anti-corrosion grade
2. Thread Standard: Custom BSPP, BSPT, NPT thread specifications
3. Pressure Grade: PN16 standard, PN20 high-pressure reinforced variant
4. Sealing Material: EPDM food grade / FKM chemical resistant grade optional
5. Brand & Packaging: Laser engraved customer LOGO on cylinder body, neutral export wooden case packaging; full material & pressure test certificates for tender documentation
6. Caliber Customization: DN15, DN20, DN25, DN32, DN40, DN50 non-standard sizes available

6. Factory Quality Control Standards

Contact Information