Samson 3222/5757 - Manual (Page 6)

1.2 Technical data
6
EB 5766 EN
Design and principle of operation
1. Single-seated Type 3222 Globe Valve
Nominal size DN 15 20 25 32 40 50
Version with threaded ends
with flanges
as flanged body
• • • • • •
Thread size G ½ ¾ 1 – – –
Version with female thread • • • – – –
Nominal pressure PN 25
Seat/plug sealing Metal sealing for K
VS
≤ 2.5 · Soft sealing for K
VS
≥ 3.6
Rated travel mm 6 12
Rangeability 50 : 1
Leakage class acc. to DIN EN 1349 Class I (< 0.05 % of K
VS
coefficient)
Version for water, oil and other liquids
Max. permissible temperature 150 °C 1, 2)
Max. permissible differential pressure Δ p in bar
Types 5724 and 5725 20 12
Type 5757 20 –
Version for water and steam
Max. permissible temperature 200 °C
Max. permissible differential pressure Δ p in bar
Types 5724 and 5725 20 · 10 for 3.6 ≤ K
VS
≤ 8 8
Type 5757 20 3) · 5 4) 5 –
Materials
Valve body Red brass CC491K · EN-JS1049 (flanged body)
Seat Stainless steel 1.4104
Plug 1.4104/CW509L with soft sealing · 1.4104 for 0.1 ≤ K
VS
≤ 2.5
Valve spring Stainless steel 1.4310 K
Packing EPDM/FPM (FKM) · Oil-resistant version: FPM
Welding ends St 37
Threaded ends Red brass CC491K
Screwed-on flanges St 37.2