Installation:Fixed orifice double regulating valves must always be installed with a minimum of 5 pipe diameters of straight pipe, without intrusion, upstream of the orifice plate. Downstream of the valve a minimum of 2 pipe diameters of straight pipe are required.

SizingOnce the required flow rate has been calculated, the size of the fixed orifice double regulating valve can be determined based on the following: The minimum signal at the design flow rate of 1 kPa.

For minimum pressure loss, a maximum signal of 4.7 kPa, which corresponds to the maximum differential pressure range of a fluorocarbon manometer.

Pressure

Equipment

DirectiveUnder the Pressure Equipment Directive (PED) these fixed orifice double

regulating valves have been specified for Group 2 Liquids i.e. non-hazardous. Sizes 1/2" to 2" are classified as SEP (Sound Engineering Practice)

ConnectionBSP Parallel F/F Ends

Pressure16 Bar Rated

Temperature-10°C to +120°C

Approvals/otherEPDM Seat

Gate Valve

Part No.ART 175

DescriptionBrass Gate Valve 25 Bar Rated

ConnectionBSP Taper F/F Ends

Pressure25 Bar Rated

Temperature-20°C to +180°C

Approvals/otherFull Bore BS 5154 Approved Kite Marked KM 553179

Globe Valve

Part No.ART 350

DescriptionBronze Globe Valve

ConnectionBSP Taper F/F Ends

Pressure32 Bar Rated

Temperature-10°C to +200°C

Approvals/otherBS 5154 Approved. Renewable PTFE Seat

Flexible Connectors

Part No.ART 430/440

DescriptionFlanged Flexible Connector

ConnectionFlanged PN16

Pressure16 Bar Rated

Temperature-20°C to +100°C EPDM

-20°C to +80°C NBR