WF-FQ11-27,Products,Wenzhou WeiFeng Technology Co., Ltd.

1. Product Overview

WF-FQ11-27 double-sided disassembly vertical T-type internal thread float ball sight flow indicator is a heavy-duty fully maintainable inline visual flow monitor independently developed by TechWF. It adopts integrated precision cast 304 stainless steel vertical T cylindrical body, horizontal symmetrical dual BSP/NPT internal thread ports, top & bottom double detachable hexagonal sight flange, built-in anti-corrosion dual-color floating ball indicator. The double-end split structure realizes full cavity access for complete cleaning and component replacement, widely applied in industrial precision cooling, medium corrosive fine chemical, large-scale agricultural irrigation, HVAC central heating, yacht and coastal marine threaded auxiliary pipeline systems.

This sight glass is integrally seamless cast from 304 stainless steel vertical T cavity, horizontal dual identical internal threads support bidirectional screw installation. Unique upper and lower hexagonal detachable flanges enable full disassembly of the entire sight cavity without cutting pipelines, allowing full extraction of float balls, filter screens and sealing parts for deep sanitization and replacement. When fluid flows along the marked arrow, buoyancy lifts the high-contrast float ball to display normal circulation; the float sinks to the bottom to warn of cut-off, empty pipe or reverse flow. It provides full-cycle maintainable flow monitoring for precision cooling pumps, chemical dosing pipelines, farm branch irrigation lines and yacht auxiliary cooling loops, eliminating blockage risks from medium sediment and avoiding pump dry-running & equipment overheating failure.

All finished units pass hydraulic burst pressure testing, salt spray anti-corrosion aging testing, dual-flange thread sealing leakage testing and hot-cold alternating cycle validation before factory delivery, maintaining stable zero-leak continuous operation under purified water, glycol, weak acid/alkali and low-salinity seawater media worldwide.

2. Premium Technical Specifications

Body Material: 304 stainless steel precision seamless casting, matte passivated anti-rust finish, food & marine anti-salt corrosion certified
Connection Standard: Horizontal dual symmetrical BSP / NPT internal thread, customizable sizes DN15~DN50
Sight Window: Double-sided upper & bottom hexagonal detachable thick borosilicate glass, 360° all-angle omnidirectional observation without blind spots
Indicator Core: Dual-color PP floating balls, lightweight, acid & alkali resistant, floats upward with medium buoyancy
Sealing Assembly: Double-layer reinforced EPDM / FKM composite gaskets; EPDM for clean water & edible media, FKM for weak solvent & brine media
Nominal Working Pressure: PN16 standard grade; PN20 high-pressure reinforced marine version optional
Operating Temperature Range: -10℃ ~ +120℃
Flow Channel: Horizontal straight full-bore inner cavity, zero extra pressure drop, polished smooth inner wall reduces crystal, limescale and fertilizer sediment adhesion
Structural Feature: Vertical T integrated threaded body, upper & bottom double hexagonal split flange design, fully openable full cavity for complete component removal and deep flushing

3. Core High-End Competitive Advantages

Integral Seamless Cast 304 Stainless Steel Vertical T Anti-Corrosion Body

One-piece seamless precision casting eliminates casting pores and internal stagnant dead zones. Matte passivation delivers excellent rust resistance under humid indoor and coastal weak salt fog environments, far superior to brass fittings for weak acid and saltwater working conditions. Smooth horizontal flow channel effectively reduces medium sediment accumulation.
Innovative Double-Sided Upper & Bottom Detachable Flange Full Maintainable Structure

Exclusive top+bottom double hexagonal split design allows full opening of the entire sight cavity, unlike single-top disassembly models that limit cleaning range. Users can completely take out float balls, filter screens and aging seals without removing the whole fitting from pipelines, realizing full cavity deep cleaning and zero dead residue retention, ideal for viscous, crystal-prone chemical & fertilizer media.
Universal Symmetric Horizontal Dual Internal Thread Bidirectional Installation

Identical standard internal threads on both inlet and outlet support bidirectional assembly, compatible with all mainstream threaded pipe fittings without transition nipples, drastically shortening construction cycles for small-branch industrial pipeline networks.
High-Contrast Dual-Color Float Ball Intuitive Flow Visualization

Distinct red & blue dual float balls form sharp visual contrast against transparent glass, easy to judge flow state even from long distance. Pure buoyancy-driven mechanical design without fragile springs or swing paddles, ultra-low failure rate and long service life.
Zero Pressure Loss Horizontal Full-Bore Unrestricted Flow Path

No protruding throttle obstacles inside the horizontal cavity, fully retains original pipeline flow capacity, perfectly matching low-loss flow control demands of precision machine cooling, fine chemical dosing and agricultural branch irrigation threaded systems.
Chemical-Inert Lightweight Float Ball Assembly

PP float balls resist weak acid, alkali and light saltwater erosion, ultra-lightweight sensitive response to tiny flow changes, no jamming or sticking after long-term 24-hour continuous operation.
360° Omnidirectional Observation, No View Blockage

Double-sided transparent glass creates all-angle viewing, no matter horizontal or vertical pipeline layout, operators can clearly observe float ball status without adjusting installation orientation.
Heavy-Duty Reinforced Split Flange High Safety Performance

Hexagonal thickened flange evenly distributes clamping force, effectively preventing glass rupture under pressure fluctuation; double-layer composite gaskets enhance sealing stability for long-term variable temperature industrial working conditions.

4. Global Cross-Industry Application Scenarios

Precision Industrial Machinery & HVAC Cooling

CNC precision machine tool cooling threaded pipelines, injection molding auxiliary circulation lines, building central heating small branch water pipes, solar multi-loop hot water auxiliary tubing; double-sided disassembly solves sediment blockage pain point of precision cooling micro pipelines.

Medium Corrosion Light Fine Chemical Industry

Weak acid/alkali solvent threaded branch pipelines, laboratory continuous reagent delivery tubing, water-based coating circulation loops; full disassembly design facilitates regular crystal sludge removal to avoid pipeline clogging and medium leakage accidents.

Large-Scale Precision Agriculture

Greenhouse nutrient solution branch irrigation threaded lines, farm fertilizer dosing auxiliary pipelines, seedling watering micro sub-lines; complete cavity flushing prevents fertilizer sediment buildup that causes uneven irrigation.

Yacht & Coastal Light Marine Anti-Corrosion Systems

Small yacht auxiliary engine cooling threaded circulation lines, coastal aquaculture low-salinity water auxiliary piping, onshore oil field light cooling water sub-loops; 304 stainless steel passivation layer withstands ocean salt fog splash erosion.

Supplementary Auxiliary Fields

Industrial pure water pretreatment small branch pipelines, fire protection micro clean water threaded lines, compressor & hydraulic equipment auxiliary cooling circulation tubing.

5. Customized Engineering Support Service

Material Customization: Standard 304 stainless steel, upgrade to 316 / 316L marine high anti-corrosion sanitary grade
Thread Standard Customization: Custom BSPP, BSPT, NPT internal thread specifications and pressure class
Pressure Grade Customization: PN16 standard, PN20 high-pressure reinforced variant
Sealing Material Matching: Food-grade EPDM for water & edible media, FKM fluororubber upgrade for weak acid/alkali organic solvent transportation
Brand & Packaging Customization: Laser engraved customer LOGO on vertical T body, neutral anti-collision export wooden case packaging; complete material & pressure test certificates provided for tender documentation
Caliber Customization: DN15, DN20, DN25, DN32, DN40, DN50 non-standard threaded sizes available

6. Factory Premium Quality Control Standards

All WF-FQ11 series double-sided split vertical T threaded float ball sight indicators implement mandatory 100% full inspection prior to shipment. Standard factory testing items include hydraulic burst pressure test, double-flange uniform compression sealing leakage test, salt spray long-cycle anti-corrosion aging test, float ball flow sensitivity test and cold-hot alternating cycle validation.

Complete stainless steel material certification, sanitary inspection reports and full pressure vessel test packages can be supplied to support global machinery cooling, light chemical, agricultural and coastal marine engineering tender reviews and equipment safety compliance audits.