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Automatic float ball type drain valve

Product Details

1. Working Principle

Uses buoyancy to automatically open/close the valve according to liquid level.

When condensate rises → float lifts → valve opens to drain
When liquid level drops → float falls → valve closes
No power needed; zero air/steam loss, energy-saving

2. Key Features

Fully automatic drainage, no manual operation
Stainless steel float, long service life
Built‑in strainer, anti-clogging
Compact structure, stable performance
Suitable for saturated condensate, continuous drainage

3. Main Specifications

Pressure: Class 150–2500 / 0–16 bar (customizable)
Connection: Flanged RF/RTJ, BW, SW, Threaded
Size: NPS 1/2"–4"
Temperature: -20℃ to 425℃
Body material: WCB, CF8, CF8M, bronze
Medium: condensate water, steam condensate, compressed air condensate

4. Applications

Steam systems, compressed air systems, tanks, dryers, filters, separators, pipelines

5. Standards & Certifications

Design: API 600, API 6D, ASME B16.34, ASME B16.10 Test: API 598 Certificates: CE, ISO, API, ABS, FM, UL, SIL, TS, EAC

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Automatic Float Ball Type Drain Valve Parameter Specifications Industry Applications

Automatic Float Ball Type Drain Valve

Product Overview

The Automatic Float Ball Type Drain Valve is a self-operating valve designed for automatic discharge of condensate, wastewater, and liquid accumulation in pipelines, tanks, and compressed air systems. The valve utilizes a float mechanism: as liquid level rises, the float lifts to open the drain port; when the liquid is drained, the float lowers to close the valve, providing fully automatic operation without external power.

This valve is renowned for:

Reliable, maintenance-free operation
Energy-saving automatic drainage
High corrosion and temperature resistance
Leak-proof sealing and long service life
Compact, lightweight design suitable for space-limited installations
Simple installation and minimal maintenance requirements

It is widely used in compressed air systems, steam systems, water tanks, HVAC systems, industrial pipelines, and boiler equipment.

OEM & Customization Capabilities

OEM Service Scope

OEM & Private Label Manufacturing
Custom Logo, Nameplate, and Packaging
Technical Drawings and Engineering Support
Factory Acceptance Testing (FAT)
Third-Party Inspection Services

Customization Capabilities

Sizes from DN15 to DN100 (½"–4")
Pressure ratings from PN10 to PN40
Materials: Brass, Stainless Steel, Carbon Steel, PVC
Float material options: Stainless Steel, Plastic, Nylon
High-temperature or hot water service versions
Explosion-proof or corrosive-resistant designs
Customized connection types: Threaded, Flanged, Socket
Adjustable float settings for precise liquid level control
Special coatings for aggressive fluids

Available Materials

Component	Material
Body	Brass, Stainless Steel 304/316, Carbon Steel, PVC
Float	Stainless Steel, Plastic, Nylon
Seal	EPDM, NBR, PTFE
Valve Seat	Stainless Steel, PTFE
Spring / Lever	Stainless Steel

Certifications

ISO 9001 Quality Management System
ISO 14001 Environmental Management System
ISO 45001 Occupational Health & Safety System
CE Certification
UL / CSA Electrical Certification (for electrically assisted versions)
WRAS / NSF Certification (for potable water)
ATEX / IECEx Certification (for gas or flammable liquids)
RoHS Compliance
EN 10204 3.1 / 3.2 Material Certification
Third-party inspection available (SGS, TUV, BV, Lloyd’s Register)

Parameter Specifications

Parameter	Specification
Product Name	Automatic Float Ball Type Drain Valve
Valve Type	Self-Operating Float Drain Valve
Nominal Size	DN15–DN100 (½"–4")
Pressure Rating	PN10–PN40
Operating Temperature	0–120°C (standard), up to 200°C (high-temp version)
Body Material	Brass, Stainless Steel, Carbon Steel, PVC
Float Material	Stainless Steel, Plastic, Nylon
Seal Material	EPDM, NBR, PTFE
Connection Type	Threaded, Flanged, Socket
Operating Medium	Water, Hot Water, Condensate, Compressed Air
Action Type	Normally Closed, Auto-Open when liquid rises
Leakage Rate	Zero leakage
Maintenance	Minimal, self-cleaning float mechanism
Design Standard	ISO 9001, CE, API (optional)
Installation Orientation	Horizontal or Vertical
Special Options	High temperature, corrosion resistant, explosion-proof

Industry Applications

Compressed Air Systems

Automatic condensate removal from air compressors
Pneumatic pipeline drainage
Condensate recovery systems

Steam & Boiler Systems

Steam traps and condensate drainage
Boiler blowdown control
Hot water system drainage

Water & Wastewater Systems

Water storage tanks
Industrial and municipal water pipelines
Wastewater discharge control

HVAC & Building Systems

Air conditioning condensate drainage
Cooling tower water drainage
Heating and hot water circulation systems

Industrial & Manufacturing Facilities

Chemical process pipelines
Food and beverage production
Pharmaceutical and cleanroom systems
Industrial process water tanks

Key Advantages for SEO

Automatic Float Drain Valve for water, hot water, and steam
Reliable self-operating condensate removal
High-temperature and corrosion-resistant drain valve
Industrial, HVAC, and compressed air drainage solutions
OEM and customizable float ball type valves

CUSTOMIZED SERVICE Customized Product

Material customization plan

Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.

Structural optimization design

For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.

Interface standard adaptation

Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.