PVDF Dual Block 2 Way Ball Valve

A PVDF Dual Block 2 Way Ball Valve is a specialized PVDF (Polyvinylidene Fluoride) ball valve designed to provide complete isolation of a pipeline in both upstream and downstream directions. It is essentially a two-ball, two-seat valve system in a single body, allowing dual block and bleed functionality for maximum safety and leak prevention in critical chemical processes. PVDF Dual Block 2 Way Ball Valve Series is suitable for the wastewater industries and is also the best choice for heavy-duty chemical industries. When two seating surfaces are used to lock off the pressure from both ends of a PVDF Dual Block 2 Way Ball Valve, that valve is known as a Dual Block 2 Way Ball Valve.

The intended function of the valve, on the other hand, may be the most essential consideration. In operating conditions where vibration or thermal expansion may compromise the performance of the standard, the PVDF Dual Block 2 Way Ball Valve technology allows the P2 Valve to shine. A patented union-nut locking device prevents back-off during harsh service conditions. The system is easy to install and does not require any special tools.

PVDF Dual Block 2 Way Ball Valve Details

d – Outer Diameter of Pipe (mm)
DN – Nominal Diameter (Diameter Nominal)
PN – Pressure Nominal (Pressure Rating, usually in bar)
B1 – Thickness or Width of Flange (mm)
C – Overall Length of Assembly (mm)
C1 – Bolt Circle Diameter or Inner Length (mm)
E – Thickness of Hub/Flange (mm)
H – Total Height (mm)
H1 – Height to Center or Raised Face Height (mm)

d (mm)	DN (mm)	PN (Bar)	B	C	C1	E	H	H1
16	10	16	29	67	40	54	102	65
20	15	16	29	67	40	54	102	65
25	20	16	34.5	85	49	65	114	70
32	25	16	39	85	49	73	126	78
40	32	16	46	108	64	86	141	88
50	40	16	52	108	64	98	164	93
63	50	16	62	134	76	122	199	111
75	65	16	87	225	175	162	213	133
90	80	16	105	327	272	202	239	149
110	100	16	129	385	330	236	268	167

Specification	Typical Value / Description
Valve Type	Dual Block® 2‑Way Ball Valve (Quarter‑turn)
Body Material	PVDF (Polyvinylidene Fluoride) — high chemical resistance/purity
Ball Material	PVDF with high‑surface finish (floating full bore)
Seats / Seals	PTFE or thermoplastic elastomer (FKM/Viton, EPDM)
Connection Types	Socket weld, threaded (BSP/NPT), butt weld, flanged
Nominal Pressure	PN16 (~16 bar) at 20 °C
Temperature Range	Approx. –10 °C to +120 °C / +140 °C
Operating Principle	Quarter‑turn rotary ball for flow control
Flow Configuration	2‑Way (inlet/outlet)
Ball Bore	Full bore (minimizes pressure drop)
Seat Adjustment	SEAT STOP® patented micro‑adjustment system
Union Lock System	Dual Block® patented lock for vibration/thermal security
Stem & O‑Ring	Double stem with dual O‑rings (reduced operating torque)
Handle / Actuation	Manual lever (locked 0°–90°); ISO 5211 for actuators
Maintenance	Radial disassembly (seats/O-rings replaceable in-line)
Anchoring	Integrated brackets for mounting and actuation
Standards / Tests	ISO 9393 and ISO/EN valve standards
Typical Sizes (DN)	DN10 to DN100
Applications	Acid/base lines, high‑purity water, industrial process piping

1. Core Design & Materials

PVDF (Polyvinylidene Fluoride) body – excellent chemical resistance, low permeability and suitable for aggressive media (acid/base/solvent) applications.
True Union construction – allows the valve body to be fully separated from the pipeline without disturbing adjacent piping, simplifying maintenance and replacement.
Full bore ball – minimal flow restriction and low pressure drop when valve is open.
High surface finish on ball for smooth operation and reduced wear on seals.

2. Mechanical & Functional Features

DUAL BLOCK® patented lock system – ensures union nut tightness even under vibration, heat expansions, or harsh conditions.
Patented SEAT STOP® ball carrier system – micro‑adjustable seals help balance force on seats, improving sealing reliability and reducing operational torque.
Easy radial disassembly – allows quick replacement of O‑rings and seat components without tools.
Integrated anchoring bracket – facilitates mounting or automation upgrades after installation.
Option for actuators – manual lever handles can be replaced or upgraded to electric or pneumatic actuators (often via ISO standard actuator bores).
Handle lock and micro switches – handles can be lockable (0°–90°) and optionally equipped with limit switches for position feedback.

3. Installation & Service Advantages

Connection versatility – available with solvent weld, threaded, or flanged ends (depending on model).
Service with valve closed – in many designs you can disassemble downstream piping without opening the valve.
Radial design – compact footprint and True Union body allows easier installation in tight spaces.
Adjustable seat carriers – using specialized kits to fine‑tune valve performance.

Temperature (°C)	Maximum Working Pressure (PN16)	Unit	Notes
20°C	16	bar	Maximum rated pressure at room temperature
40°C	14	bar	Slight derating due to temperature
60°C	12	bar	Standard operating derating
80°C	10	bar	Suitable for most chemical lines
100°C	8	bar	High temperature applications
120°C	6	bar	Upper limit of standard PVDF service
140°C (Max)	4	bar	Maximum allowable temperature; careful use recommended

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 2 Way Ball Valve

1. Dual Isolation (Dual Block)

Two independent balls provide complete upstream and downstream shutoff.
Minimizes leakage risk during maintenance or valve replacement.
Enhances safety in handling hazardous chemicals.

2. Excellent Chemical Resistance

PVDF material resists strong acids, alkalis, solvents, and oxidizing agents.
Suita63ble for aggressive chemical and industrial fluids.

3. Tight Shut-Off

PTFE or FKM seats provide bubble-tight sealing.
Ensures no backflow or contamination in critical lines.

4. High Temperature Capability

Can operate up to 120–140°C depending on design.
Maintains structural integrity at elevated temperatures.

5. Maintenance-Friendly Design

Dual block with optional bleed port allows safe line maintenance without shutting down the entire system.
Seats and seals are replaceable, reducing downtime.

6. Lightweight & Durable

PVDF is much lighter than exotic alloys.
Corrosion-proof, reducing wear and extending service life.

7. Versatile Installation Options

Available in flanged, threaded, or wafer designs.
Can be operated manually or automated with pneumatic/electric actuators.

8. High Purity & Non-Contaminating

Ideal for pharmaceutical, semiconductor, and ultra-pure chemical systems.
Low extractables prevent contamination of fluids.

9. Safety Enhancements

Optional bleed/vent port between the two balls allows pressure relief or sampling.
Reduces risk of overpressure and chemical exposure during maintenance.

10. Cost-Effective Alternative

PVDF provides similar chemical resistance as titanium or Hastelloy, but at a fraction of the cost.
Reduces total cost of ownership in corrosive process lines.

Types of PVDF Dual Block 2 Way Ball Valve

1. Flanged PVDF Dual Block 2 Way Ball Valve

Equipped with flanged ends for bolted pipeline connections.
Medium to large pipelines
High-pressure systems in chemical and industrial plants
Strong, secure connection
Easy alignment and installation

2. Threaded PVDF Dual Block 2 Way Ball Valve

Features BSP/NPT threaded ends for smaller pipelines.
Compact piping systems
Low to medium pressure lines
Easy installation without flanges
Cost-effective for small diameter pipes

3. Wafer / Socket PVDF Dual Block 2 Way Ball Valve

Slim design installed between pipe flanges using bolts or solvent welding (socket type).
Limited space applications
Systems requiring lightweight valves
Compact, lightweight, reduces piping support needs
Simplifies retrofit installations

4. Pneumatic or Electric Actuated PVDF Dual Block 2 Way Ball Valve

Integrated with a pneumatic or electric actuator for remote or automated operation.
Automated chemical dosing
Remote control in hazardous or hard-to-reach areas
Enables remote opening/closing
Reduces manual handling and enhances safety

5. Bleed-Port / Sampling PVDF Dual Block 2 Way Ball Valve

Includes a small port between the two balls for pressure relief, venting, or sampling.
Chemical processes requiring safe maintenance
Systems where pressure equalization or sampling is needed
Increases operational safety
Allows line isolation without system shutdown

Applications of PVDF Dual Block 2 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?

In the field of Oil, gas, water fluid, and chemical injection technology, Petron Thermoplast Company played a leading role, known for innovation and reliability. Petron Thermoplast has engineered high performance PVDF Dual Block 2 Way Ball Valves that maximize mixing efficiency and durability. Their design is patented to ensure consistent performance across a wide range of flow rates and pressures.

Petron Thermoplast PVDF Dual Block 2 Way Ball Valves are particularly favored in chemical treatment applications due to their precision, long service life, and compatibility with corrosive water.

Suitable for Industrial & Utility Applications

Our PVDF Dual Block 2 Way Ball Valves are widely used in Oil, gas treatment plants, effluent systems, cooling water lines, chemical handling (mild chemicals), and industrial utilities.

Export Grade Quality & Standards Compliance

All PVDF Dual Block 2 Way Ball Valves are manufactured under strict quality control and comply with international standards, making them suitable for domestic and global projects.