*mydirectindustry

Catalogs
Belgicast
ERHARD DVF

ERHARD DVF

Product catalog summary

Overview: The document provides technical specifications and operational details for the ERHARD DVF pressure reducing valve, designed to transform higher, fluctuating inlet pressures into lower, constant downstream pressures. It highlights the valve's robust design and operational features.

Specifications:

The valve is directly controlled and made from spheroidal cast iron, suitable for water applications up to 70°C.
Available in nominal sizes DN 50 to 200 with pressure ratings PN 10, 16, and 25.
Two types of springs are available: Spring A (blue) for 1.5 to 6 bar and Spring B (red) for 5 to 12 bar.
Materials include spheroidal cast iron for the body, lamellar cast iron for the plug, and Alu-Bronze for the body seat and guide.
Corrosion protection is provided by a fusion bonded epoxy coating.

Operational Features:

The valve opens when downstream pressure drops below the preset value and closes when it exceeds the value.
Features include a guide piston located outside the medium, a stable rolling diaphragm, and high maintainability with accessible inner parts.
Two integrated pressure gauges with check valves are included for convenience.
No external energy is required for operation.

Installation and Dimensions:

Dimensions and weights vary by nominal size, with detailed measurements provided for each size.
Flange dimensions and packing mass are specified for each nominal size.

Additional Information:

Special versions in PN 40 are available on request for certain sizes.
When ordering, specify minimum and maximum volume flow rate, maximum upstream pressure, and required downstream pressure range.

Contact Information: ERHARD GmbH & Co. KG, Heidenheim, Germany. Contact details including phone, fax, email, and website are provided.

Catalog excerpts

Data sheet ERHARD DVF pressure reducing valve

Open the catalog to page 1

The directly controlled pressure reducing valve Pressure reducing valves such as the ERHARD DVF pressure reducing valve transform a higher, fluctuating inlet pressure into a lower, constant downstream pressure. The desired downstream pressure value is set by pretensioning the spring. There are two types of springs available for the ERHARD DVF pressure reducing valve: spring A (blue) for a pressure range of 1.5 to 6 bar and spring B (red) for a pressure ranging between 5 and 12 bar. When the downstream pressure drops below the preset value, the valve will open and when it exceeds the value, it...

Open the catalog to page 2

ERHARD DVF pressure reducing valves PN 10/16/25 directly controlled, spheroidal cast iron Area of application: Water max. 70° C Nominal size DN Max. allow. gauge working pressure = max. upstream pressure bar Hydrostatic test pressure (bar) Spring A bar 1,5 - 6 – 1,5 - 6 – 1,5 - 6 – 1) Special version in PN 40 for DN 50, 65, 80 on request. When ordering, please specify min. and max. volume flow rate, max. upstream pressure and the required downstream pressure range. Flange B, DG, Type 21, ISO 7005-2, PN 10/16/25. Materials and equipment Corrosion protection Fusion bonded epoxy (FBE) coating in...

Open the catalog to page 3

Your Choice in Waterflow Control TALIS is always the number one choice whenever water transport or control is required. TALIS has the best solution for water and energy management, as well as for industry and municipal applications. With a varied range of products we offer comprehensive solutions for the entire water cycle. From hydrants to butterfly valves. From the knife-gate valves to the needle valves. Our experience, innovative technology, global expertise and individual consultation process form the basis for developing sustainable solutions for the efficient handling of the vital resource...

Open the catalog to page 4

ERHARD DVF

ERHARD DVF

Catalog excerpts

All Belgicast catalogs and technical brochures