The document describes a Zwischenflansch-Rückschlagventil SR 30.40 wafer type lift check valve, suitable for fluids, steam, and gas, complying with Fluidgroup 1 according to PED 97/23/EC. It features replaceable elastic seat rings and various optional opening pressures. The materials used are 1.4404 stainless steel, and a Nimonic spring should be used for operating temperatures exceeding 300°C.
This document provides technical specifications for the RITAG SR 30.40 Wafer Type Lift Check Valve. It outlines the equipment's operating limits regarding temperature and pressure, lists compatible materials such as stainless steel grades 1.4404 and 1.45714, and specifies leakage rates according to EN 12266-1 standards.
The datasheet includes detailed dimensional data for various nominal diameters (DN) from 15 to 100, along with a pressure drop chart specifically calibrated for water at 20°C. It also covers opening pressures for different fluid groups and notes the availability of elastic seat rings.
| Valve Type | Wafer Type Lift Check Valve |
|---|---|
| Body Material (DN 15-100, PN 6-40) | 1.4404 |
| Spring Material | 1.45714 |
| Leakage Rate Standard | EN 12266-1, D or A |
| Max Operating Temperature (with Nimonic spring) | >300°C |
A Nimonic spring should be selected when operating temperatures exceed 300°C.
The leakage rate complies with EN 12266-1, class D (metal/PTFE) or A (NBR/EPDM/FKM).