D7/S is an air-actuated cutting valve produced by STAG company in Italy. It has excellent flow characteristics and sealing performance, and can be widely used in the petroleum, chemical, metallurgical and other industries.
This document provides technical specifications for the Nuova General D7 pressure reducing valve (reducer). It covers homologation standards, flow coefficients, and setting ranges for various pressure ratings including PN, GOST-R, ATEX, ASME, and Canadian regulations.
The datasheet details available configurations based on material (Brass, Mixed Brass, Stainless Steel) and the presence of ring nuts. It also lists compatible seal systems (N.B.R., E.P.D.M., VITON, SILICONE, TEFLON, KALREZ) with their respective temperature limits and standard connection sizes (1/4" to 3/8" NPT/EN10226). This manual is written in Italian.
| Setting Range (GOST-R) | 0,3 - 60,0 bar |
|---|---|
| Setting Range (ASME VIII Div.1) | 1,0 - 40,0 bar |
| Setting Range (Canadian Reg.) | 1,0 - 40,0 bar |
| Weight (D7/S) | 0,13 kg |
| Weight (D7/AO) | 0,10 kg |
| Standard Connection Size | 1/4" - 3/8" |
| Temperature Range (N.B.R.) | -10 / + 100 °C |
| Temperature Range (E.P.D.M.) | -50 / + 150 °C |
| Temperature Range (VITON) | -20 / +200 °C |
| Temperature Range (SILICONE) | -60 / +200 °C |
| Temperature Range (TEFLON) | -196 / +250 °C |
| Temperature Range (KALREZ) | -20 / +250 °C |
The standard connection sizes are 1/4" to 3/8".
The setting range for the valve is 0.3 to 60.0 bar.
The available inlet connection sizes are 1/4" to 3/8" NPT.
The VITON seal system is rated for a maximum temperature of +200°C.