4” Screwdown Valve — comprising: top tank weld-in pad,
stud kit and PTFE gasket; spring-loaded top operator;
4” poppet assembly with PTFE seal disc; 4” NB bottom
tank weld-in pad with replaceable seat area. Contact
parts manufactured in 316 stainless steel.
NOTE : 1” Sched. 10 tube not supplied.
Options — Hastelloy replaceable seat. Steam heated
bottom pad. High temperature seals. Range of 3½”
Screwdown valves.


Weight 31 Kg
Design Pressure (MAWP) 4 Bar (58 PSI)
Test Pressure 6 Bar (87 PSI)
Design Temperature -20°C to 250°C
(-4°F to 392°F)
Pre-load 1007 LbF @ 5.25mm
Max solid washers 10.50mm
Stroke 50mm