EN593 Design Standard Butterfly Valve

As an important specification in the field of industrial valves in Europe, the EN593 design standard provides a systematic framework for the design, manufacture and testing of metal butterfly valves. This article will deeply analyze the core requirements of the standard and explore the technical advantages of butterfly valves that meet this standard (EN 593 design standard butterfly valve) in industrial scenarios.

Core specifications of EN593 standard

EN593 was developed by the European Committee for Standardization (CEN) and is applicable to the design of metal butterfly valves in flanged or butt-welded pipeline systems, covering isolation, regulation and control functions. Its technical highlights include:

Pressure and size range:

1. Nominal pressure (PN): 2.5 to 40 bar; American standard grade (Class): 150 to 300;

2. Nominal diameter (DN): DN20 to DN2400, with a maximum support of 2.4-meter diameter design (DN2400);

3. Special applications (such as process control) require reference to EN1349 and EN60534-2-1 supplementary standards.

Material and structural requirements:

1. The valve body must be made of corrosion-resistant metal (such as carbon steel, stainless steel or duplex steel) and meet EN 10204 material certification;

2. The valve stem and butterfly plate must have torsional strength, and the valve seat seal must be adapted to soft seals (EPDM/FKM) or metal-to-metal hard seals;

3. The flange connection dimensions strictly follow the EN 558 standard to ensure global interchangeability.

Performance test specifications:

1. Sealing test: According to ISO 5208 standard, zero leakage is achieved at 1.1 times the rated pressure;

2. Operating torque verification: After the actuator is installed, it must pass 1000 opening and closing cycle tests, and the torque fluctuation is≤5%;

3. Pressure strength test: The valve body must withstand a hydrostatic pressure test of 1.5 times the PN pressure for 3 minutes without deformation

OurEN593 design standard butterfly valve strictly follow these standard, if you need confirm other standard please just contact us.

Technical advantages

Technical advantages:

The butterfly valve that complies with the EN593 standard ( EN593 design standard butterfly valve) performs well in the following scenarios:

Adaptability to harsh media:

1. By optimizing the butterfly plate surface with Halar, PTFE or metal plating, it can withstand strong acid, high-temperature steam and abrasive granular media13;

2. For example, the DN1600 valve can withstand H2S corrosion at 150℃ and PN16 conditions for a long time in the sulfur recovery system of a petrochemical plant.

High-efficiency sealing design:

1. The bidirectional sealing structure (double eccentric or triple eccentric) reduces the friction of opening and closing and extends the life of the valve seat;

2. The leakage level of the soft seal valve seat reaches Class VI (bubble-level seal), and the hard seal meets the fire safety standard (API 607).

Intelligent upgrade potential

1. The standardized ISO5211 square shaft interface (F05-F25) supports the rapid integration of electric/pneumatic actuators;

2. Combined with the Industrial Internet of Things (IIoT), the valve torque, temperature and leakage warning data can be monitored in real time.