PVDF Dual Block 3 Way Ball Valve
A PVDF Dual Block 3 Way Ball Valve is a type of industrial plastic valve designed to control the direction of fluid flow in piping systems. Let’s break it down clearly: The PVDF Dual Block 3 Way Ball Valve has two modes of operation: input and output. A PVDF Dual Block 3 Way Ball Valve may be recommended in some systems when more than one medium is used. Instead of just two ports (entries), PVDF Dual Block 3 Way Ball Valve has three. PVDF Dual Block 3 Way Ball Valve is a high performance thermoplastic known for Excellent chemical resistance (acids, alkalis, solvents), High temperature tolerance (typically up to ~140°C depending on pressure), UV and weather resistance, and High purity (used in chemical industries).
This multiport arrangement can divert fluid from the primary valve input in two different directions (instead of just one) via two independent valve outputs. The primary flow line is served by two separate and alternate inlets, which is another common application of the PVDF Dual Block 3 Way Ball Valve. Flow pattern, handle direction, and the range of 90 degree spin that the handle can make are all used to classify PVDF Dual Block 3 Way Ball Valve. Depending on how the PVDF Dual Block 3 Way Ball Valve is drilled and the pipe design, gas and liquid flow can be diverted, mixed, blocked, or completely stopped in one direction.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PVDF Dual Block 3 Way Ball Valve Details
General Dimensions
DN: Nominal Diameter
D: Outer Body Diameter
d: Internal Bore Diameter
b: Center to Top Height
B1: Center to Bottom Height
H: Total Overall Length
H1: Body End Distance
L: Socket Connection Depth
Mounting & Stem Details
G (ISO Pattern): ISO Mounting Standard (e.g., F03)
ØC (Stem/Square): Stem Square Diameter
ØE (Bolt Hole Dia): Bolt Hole Diameter
4-ØE: Four Bolt Holes
Dimensional Data Specifications
| SIZE (DN) | D | d | b | B1 | H | H1 | L |
| 15 | 54 | 14 | 53 | 30 | 137 | 81 | 22 |
| 20 | 69 | 22 | 65 | 38.5 | 172 | 109 | 24.5 |
| 25 | 82 | 25 | 68 | 46 | 200 | 130 | 28 |
| 32 | 82 | 25 | 68 | 46 | 208 | 130 | 32 |
| 40 | 117 | 38 | 92 | 65 | 240 | 154 | 35 |
| 50 | 117 | 38 | 92 | 65 | 246 | 154 | 38 |
ISO Mounting Pattern and Stem Details
| SIZE (DN) | G (ISO Pattern) | ØC (Stem/Square) | ØE (Bolt Hole Dia) |
| 15 | F03 | 11 | 5.5 |
| 20 | F03 | 11 | 5.5 |
| 25 | F03 | 11 | 5.5 |
| 32 | F03 | 11 | 5.5 |
| 40 | F03 | 14 | 8.5 |
| 50 | F03 | 14 | 8.5 |
| Parameter | Details |
| Product Type | Dual Block 3 Way Ball Valve (True Union Type) |
| Material (Body & Ball) | Virgin Polyvinylidene Fluoride (PVDF) |
| Seat Material | PTFE (4-seat design for stability) |
| Seal Material | EPDM / FPM (Viton) / PTFE |
| Valve Design | 3-way multiport (L-port / T-port) |
| Construction | Dual Block® True Union design |
| Function | Mixing / diverting / shut-off flow |
| Working Principle | Quarter-turn (90° rotation of drilled ball) |
| Connection Type | Socket weld / Threaded (BSP/NPT) / Flanged |
| Available Sizes | DN15 to DN50 (½″ to 2″) |
| Pressure Rating | Up to PN10 (10 bar / 145 PSI) |
| Operating Temperature | -20°C to +120°C |
| Flow Direction | Multi-directional (3 ports) |
| Flow Control | Diverting / Mixing / Isolation |
| Actuation Options | Manual / Pneumatic / Electric (actuator-ready) |
| Operation Angle | 90° (can be limited to 90°/180° with stopper) |
| Handle Type | Ergonomic handle with locking option |
| Dual Block System | Prevents loosening of union nuts under vibration/thermal stress |
| Ball Design | Floating ball, full bore / reduced bore |
| Surface Finish | High polished internal surface for smooth flow |
| Pressure Drop | Low (efficient flow path) |
| Density (PVDF) | ~1.75 – 1.78 g/cm³ |
| Tensile Strength | ~35 – 50 MPa |
| Chemical Resistance | Excellent (acids, alkalis, solvents, oxidizers) |
| UV Resistance | Excellent (outdoor applications) |
| Thermal Stability | High temperature resistance |
| Stem Design | Blow-out proof with double O-ring sealing |
| Maintenance | Easy (true union allows quick dismantling) |
| Mounting Standard | ISO 5211 actuator mounting pad |
| Standards Compliance | ASTM D3222, ISO 9393, ISO 5211 |
| Safety Feature | Dual Block locking system for secure sealing |
| Applications | Chemical processing, water treatment, pharma, high-purity systems |
1. PVDF Body Construction
- Made from high-performance PVDF material
- Excellent resistance to corrosive chemicals
- Suitable for high-temperature applications
2️. Three-Way Flow Control
- Available in L-Port (diverting) and T-Port (mixing/splitting)
- Allows flexible fluid routing in a single valve
3️. Dual Block (Double Union) Design
- Easy removal from the pipeline
- Simplifies maintenance and replacement
- Reduces downtime
4️. Leak-Tight Sealing System
- PTFE seats for bubble-tight shutoff
- EPDM or FKM O-rings for reliable sealing
- Suitable for chemical and high-purity systems
5️. Automation Compatibility
- Manual lever operation
- Can be fitted with pneumatic or electric actuators
- Ideal for automated industrial processes
| Temperature (°C) | Max Working Pressure (bar) | Comments |
| 0–20 °C | 10 bar (~145 psi) | Typical max rating for PN10 valves at room temp. |
| 40 °C | ~10 bar | PVDF material maintains full pressure capability at moderate temperatures. |
| 60 °C | 8–9 bar | Slight derating with rising temperature (typical behavior). |
| 80 °C | 6–8 bar | Further reduction due to material softening. |
| 100 °C | 5–6 bar | Many PVDF ball valves are rated up to ~120 °C, but at lower pressure. |
| 120 °C | ~4 bar | Near the upper temperature limit of typical seals and the PVDF body. |
Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.
Benefits of Using PVDF Dual Block 3 Way Ball Valve
1️. Excellent Chemical Resistance
- Highly resistant to strong acids, alkalis, and aggressive chemicals
- Ideal for chemical processing and corrosive environments
- Long service life with minimal material degradation
2️. High Temperature Capability
- Can operate up to ~140°C (depending on pressure)
- Performs better at elevated temperatures compared to PVC or PP
3️. Dual Block (Double Union) Design
- Easy removal from the pipeline without cutting pipes
- Quick maintenance and replacement
- Reduced downtime and labor costs
4️. 3-Way Flow Control Flexibility
- Available in L-Port (diverting) and T-Port (mixing/splitting)
- Reduces the need for multiple valves and fittings
- Compact and space-saving installation
5️. Corrosion & UV Resistance
- Suitable for outdoor installations
- Resistant to weathering and sunlight exposure
6️. High Purity Material
- Low contamination risk
- Suitable for pharmaceutical, chemical treatment, and semiconductor industries
7️. Smooth Operation
- Low torque manual operation
- Bubble-tight shutoff
- Suitable for automation (pneumatic or electric actuator option)
8️. Leak-Free Sealing
- PTFE seats provide tight sealing
- EPDM/FKM O-rings available for chemical compatibility
9️. Lightweight & Easy Installation
- Much lighter than metal valves
- Lower installation and support structure costs
10. Cost-Effective Long-Term Solution
- Lower maintenance costs
- Longer lifespan in corrosive applications
- Reduced replacement frequency
Types of PVDF Dual Block 3 Way Ball Valve
1. By Flow Path / Port Configuration
Type | Flow Pattern | Use Case |
L-Port 3-Way Ball Valve | Directs flow between two paths (one inlet → one of two outlets) | Switching/diverting flow |
T-Port 3-Way Ball Valve | Can route flow among all three ports | Mixing or splitting the flow |
2. By End Connection Type
Type | Description |
Socket (Solvent/Weld) Ends | PVC/PVDF pipe is solvent-welded into the valve ends |
Threaded (BSP/NPT) Ends | Screw-in connections for easy assembly/disassembly |
Flanged Ends | Bolted flange connection — good for larger lines and maintenance |
3. By Actuation Method
Type | How It Operates |
Manual Lever Operated Valve | Turned by hand for simple open/close/divert action |
Pneumatic Actuated Valve | Air-driven actuator for automated control |
Electric Actuated Valve | Motor/gear actuator for remote or automated systems |
4. By Size Range
Typical sizes (varies by manufacturer):
- Small: ½″, ¾″, 1″ (DN15, 20, 25)
- Medium: 1½″, 2″ (DN40, 50)
- Large: 3″, 4″ (DN80, 100)
5. By Special Features / Options
Variant | Feature |
With Drain/Bleed Ports | Extra ports for system draining or venting |
With Bypass Port | Alternate flow path around the valve |
High-Pressure Rated | Reinforced seals/body for higher pressure service |
Purity / Low-Contamination Versions | Optimized for pharma/semiconductor use |
Vacuum Service Ready | Enhanced seals for low-pressure/vacuum systems |
Applications of PVDF Dual Block 3 Way Ball Valve
Process Industry
High Purity Applications
Electronic Industry
Electrical Industry
Semi-conductors Industry
Pharmaceutical Industry
Solar power panels
Sugar Industry
Paper & Pulp Industry
Nuclear Power Industry
Automotive Industry
DI water plants
Why Choose Petron Thermoplast?
Petron Thermoplast is a trusted manufacturer and supplier of PVDF Dual Block 3 Way Ball Valves engineered for smooth operation, reliable shut-off, and long-term performance in demanding industrial environments.
1. Wide Size & Connection Options
Available with different sizes of valves, compatible with DIN, ANSI, and other international standards.
2. Smooth Flow Control & Throttling
Our PVDF Dual Block 3-Way Ball Valve allows accurate flow regulation, making titsuitable for both on/off and throttling applications.
3. Lightweight & Easy Installation
Compared to metal valves, PVDF Dual Block 3-Way Ball Valves are lighter and easier to install, reducing installation time and pipeline load.
4. Tested for Industrial Performance
Every valve undergoes strict quality checks for dimensional accuracy, sealing performance, and operational reliability before dispatch.
