How does the PDRO01 work?

It keeps the differential pressure between the inlet and outlet pressure points constant. The valve opens when the differential pressure rises. No external power is required.

What sizes and connections does the PDRO01 offer?

Sizes are 1/2" ~ 10" (15A ~ 250A) with flange, butt weld (BW) and socket weld (SW) connections. The pressure rating is ASME Class 150 ~ 300 (PN16 ~ 40).

VALVEPARK PDRO01 Pressure Differential Regulator (Opening Type)

Model: PDRO01

The PDRO01 is an opening type differential pressure regulator that keeps the differential pressure between the inlet and outlet pressure points constant without external power. The valve opens when the differential pressure rises. Sizes run from 1/2" to 10" (15A ~ 250A), and it suits the indirect connection method of district heating systems and return pipes.

Features

Self-Operated Differential Pressure Regulation: Maintains a constant differential pressure between the inlet and outlet pressure points without external power, delivering stable system performance in industrial heating applications.
Automatic Opening Pressure Response: The valve opens automatically when the differential pressure rises, relieving the pressure difference, keeping the pressure control range and stabilizing flow conditions.
Suitable for District Heating Return Systems: Widely used in city heating systems and large building heating networks, especially suited to the indirect connection method of district heating systems, and generally installed on the return pipe.

VALVEPARK PDRO01 Pressure Differential Regulator (Opening Type) PDRO01

VALVEPARK PDRO01 Pressure Differential Regulator (Opening Type) PDRO01 2

Specifications

Model	PDRO01
Size	1/2" ~ 10" (15A ~ 250A)
End Connection	Flange, BW, SW
Pressure Rating	ASME Class 150 ~ 300 (PN16 ~ 40)
Body Material	Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel
Plug Material	SS304, SS316, FKM, PTFE, PPL
Actuation Type	Self-operated opening type differential pressure regulator that maintains constant differential pressure between inlet and outlet pressure points with a fully balanced bellows/diaphragm design.

Frequently Asked Questions

How does the PDRO01 work?: It keeps the differential pressure between the inlet and outlet pressure points constant. The valve opens when the differential pressure rises. No external power is required.
What sizes and connections does the PDRO01 offer?: Sizes are 1/2" ~ 10" (15A ~ 250A) with flange, butt weld (BW) and socket weld (SW) connections. The pressure rating is ASME Class 150 ~ 300 (PN16 ~ 40).

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