Technical data

01

Nominal size	DN15 – DN300
Pressure rating	PN16
Service temperature	NBR −30 °C … +100 °CEPDM −50 °C … +150 °CFKM −20 °C … +200 °CSilicone (VMQ) −55 °C … +200 °CPTFE −196 °C … +260 °CMetal −196 °C … +538 °C Depends on the seal option; may be narrower depending on body and trim material. Exact value in the quotation.
Standard	DIN
Connection type	Flanged
Design	Short pattern, full bore (in-house design)
End connection standard	DIN 2501DIN 2501Flange connection dimensions (former DIN series; superseded by EN 1092)
Test	TS EN 12266-1EN 12266-1Industrial valves — testing of valves · pressure tests

The standards listed apply to stocked products. Contact us for other standards.

Material

02

Material options for short pattern check valves are listed below.

Body	SS316CuSn10Rg5Rg10ST-37GG25GGG 40.3
Disc	SS316SS304TiSuper duplex (1.4410)Duplex (1.4462)AlBronzRg5Rg101040ABSPTFE
Lock, bolts	SS316SS304
Seal	NBREPDMViton (FKM)SiliconePTFE (virgin, carbon-filled)Metal
Coating for Fe-C materials	Cataphoretic coatingGalvanizingZincNickelElectrostatic powder coatingAnti-corrosion primerWRAS-approved epoxy coating

Features

03

Advantages

Low pressure drop: minimal resistance to flow.
Fast closing: reduces the risk of water hammer.
Low maintenance: few moving parts, long service life.

Applications

HVAC and water treatment systems
Industrial process lines and pump discharges
Chemical and petrochemical process lines
Fire-fighting systems
Power plants
Marine and ship machinery
Heating, cooling and air-conditioning systems

Accessories

04

Disc support spring

The support spring keeps the disc closed in horizontal or inclined installations and when there is no flow. The spring can also be designed so that the disc opens at a specific pressure.