ZJSVA/ZXSVA

– Robust body made of billet-forged steel.

– Extremely robust material with a very dense, homogeneous and fine-grained microstructure enables the valve to withstand high stresses.
– Ideal for very high pressures and temperatures.
– Compared with cast bodies no risk of porosity and shrinkage cavities, excellent weldability.
– Available as straight-way or angle valve.

– Additional features ensure safe sealing to atmosphere:

– Pressure seal design: The higher the pressure in the valve body, the tighter the bonnet joint. Metal-capped pure graphite gasket. Very low risk of leakage, particularly at high pressures and temperatures. Compact design.
– Graphite gland packing with packing end rings, protected against oxidation by metal caps.

– Insensitive to thermal cycling loads
– Reliable, tight shut-off and service-friendly design

– Very robust design: Single-piece stem and throttling plug assembly or perforated throttling plug (optional) enable the valve to cope with very high differential pressures.
– Standard DIN/ISO top flange simplifies actuator mounting. No modifications required. No need to dismantle pressure-retaining components.

– Additional safety and blow-out protection by standard back seat.
– Long service life and high functional reliability

– of the gland packing due to non-rotating stem with burnished shank.
– Threaded bush runs in cylindrical roller thrust bearings for smooth actuation.
– Hard-faced seat/disc interface made of wear-resistant and corrosion-proof Stellite as standard.

Globe valve