PPH Pressure Release Valve

The PPH Pressure Release Valve (also known as a pressure relief valve) is a safety device designed to automatically relieve excess pressure from pipelines, tanks, or equipment to protect systems from overpressure conditions. Constructed using Polypropylene Homopolymer (PPH), this valve is highly resistant to chemical corrosion, making it ideal for aggressive and hazardous fluid systems.This valve is an essential component in chemical processing plants, dosing systems, and industrial fluid networks, offering reliable and accurate pressure control to maintain operational safety and system integrity.

A PPH Pressure Release Valve is a safety device made from Polypropylene Homopolymer (PPH) that is designed to automatically release excess pressure from a piping system or tank when the internal pressure exceeds a preset limit. This helps to protect equipment, pipelines, and personnel from damage or failure due to overpressure conditions.A PPH Pressure Release Valve is a protective valve that prevents overpressure by safely releasing excess fluid or gas from the system.

PPH Pressure Release Valve Details

DN: Nominal Diameter (Internal size).
L: Total Face-to-Face Length.
H: Total Height from the bottom of the body to the top of the bonnet/handle.
D: Outer Diameter of the valve body or flange.
d / z / h: Typically refer to socket depth, port diameter, or specific bolt-hole center dimensions.

DN	L	H	D	d	z	h
15	170	172	82	20	21	27
20	170	172	82	25	21	27
25	212	202	107	32	26	35
32	226	202	107	40	28.5	35
40	292	259	148	50	37	58
50	305	259	148	63	37	58

Parameter	Specification
Valve Type	Pressure Release (Relief) Valve
Operation	Automatic, spring-loaded
Material (Body)	Polypropylene Homopolymer (PPH)
Seat Material	EPDM / FKM (Viton) / PTFE
Spring Material	Stainless Steel (SS316) / Encapsulated
Connection Type	Socket Weld / Threaded / Flanged / Butt Weld
Size Range	DN15 to DN100 (½” to 4”)
Pressure Range (Set Pressure)	0.5 bar to 10 bar (adjustable)
Pressure Rating	PN10
Temperature Range	0°C to +95°C (approx.)
Flow Direction	Uni-directional
Mounting Position	Vertical (preferred) / Horizontal
Leakage Class	Bubble-tight (Class VI)
Actuation Method	Spring-loaded self-actuated
Adjustment	Manual set pressure adjustment (optional locking cap)
Standards	ISO 4126 / DIN 3440 / ISO 15494
Applications	Chemical plants, water treatment, dosing systems, storage tanks

Feature	Description
Density	Low (lightweight material)
Chemical Resistance	Excellent resistance to acids, alkalis, and corrosive fluids
Temperature Resistance	Suitable up to ~95–100°C
Mechanical Strength	High stiffness and impact resistance
Corrosion Resistance	Non-corrosive (no rust or scaling)
UV Resistance	Good (suitable for outdoor use)
Thermal Stability	Maintains performance under temperature variation
Surface Finish	Smooth, reduces friction and scaling
Hygienic Properties	Non-toxic, suitable for clean fluid handling

Automatic Pressure Relief – Releases fluid when system pressure exceeds preset limits.
Chemically Resistant Material – Ideal for aggressive media like acids, alkalis, and corrosive chemicals.
Non-Corrosive and Durable – PPH body ensures long service life in harsh environments.
Adjustable Set Pressure – Offers flexibility to match different system requirements.
Leak-Tight Performance – Precision sealing to avoid unwanted fluid loss.
Compact Design – Easy to install in limited space.
Maintenance-Friendly – Simple construction allows easy inspection and servicing.

Temperature (°C)	Maximum Pressure Rating (Bar)	Pressure Class
20°C	10 Bar	PN10
30°C	9 Bar	PN10
40°C	8 Bar	PN10
50°C	7 Bar	PN10
60°C	6 Bar	PN10
70°C	5 Bar	PN10
80°C	4 Bar	PN10
90°C	3 Bar	PN10

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 PPH Pressure Release Valve

Flow Diversion Capability

The L-port design allows fluid to be directed between two different pipelines from a single inlet, making it ideal for switching or diverting flow.

Corrosion Resistance

Made from PPH material, the valve resists chemicals, acids, and alkalis, making it suitable for aggressive industrial environments.

Compact Piping System

One 3-way valve can replace multiple 2-way valves, reducing piping complexity and saving installation space.

Leak-Proof Sealing

Ball valves provide tight shut-off with high-quality seats and seals, ensuring minimal leakage and reliable operation.

Low Maintenance

Simple internal design with fewer moving parts results in long service life and minimal maintenance requirements.

Easy Operation

Quarter-turn (90°) operation allows quick opening or closing, making flow control fast and efficient.

Lightweight & Durable

PPH material makes the valve lightweight yet strong, allowing easy installation and long-term durability.

Suitable for Automation

Can be fitted with pneumatic or electric actuators for automated industrial systems.

Prevents Cross-Contamination

The L-port directs flow to only one outlet at a time, preventing mixing between lines.

Types of PPH Pressure Release Valve

Socket End Type

This type has socket connections that allow it to be welded or glued to PPH pipes, making it common in chemical and water treatment systems.

Threaded End Type

Equipped with threaded connections (BSP or NPT), this type is easy to install or remove and is often used in smaller pipelines where maintenance accessibility is important.

Flanged End Type

Flanged connections are used for large-diameter or high-pressure pipelines, providing strong and secure installation in industrial plants.

True Union Type

Features union nuts that allow the valve to be removed from the pipeline without cutting the pipes, which makes maintenance and cleaning very convenient.

Manual Operated Type

Operated with a hand lever or handle, offering quick 90° rotation for flow switching between two outlets.

Actuated Type (Pneumatic or Electric)

Designed for automation, these valves are fitted with pneumatic or electric actuators to control flow remotely or automatically in industrial processes.

Horizontal L-Port Design

Ports are arranged horizontally for standard pipeline layouts.

Vertical L-Port Design

One port is positioned vertically, which is useful for compact piping systems or tight installations.

Applications of PPH Pressure Release 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 has selected the right provider of PPH 3 Way Ball Valve L Port Type to require balancing material quality, actuation needs, and system compatibility. For high-performance applications involving steam, chemicals, or automated control. Petron Thermoplast is a certified valves dealer to deliver the optimal reliability. While the entry level of options exists for non-critical uses, investing in a well-engineered valve reduces downtime and maintenance costs over time.