Principle of operation
Self-operated pressure regulators are control devices whose measuring units draw their energy from the process mediun which creates sufficient force to move the final control element(plug with plug stem).
The regulators consist of a valve and an actuator which either opens or closes the valve when the pressure increases.The regulators are proportional regulators controlled by the process medium.Each deviation from the adjusted set point is assigned a certain valve plug position.
Pressure reducing valves
Pressure reducing valve or pressure reduing stations withdraw as much energy from a pressure vessel with a higher pressure level as needed to maintain a nearly constant pressure level in downstrem equipment, although consumption fluctuates.
The pressure p2 to be controlled (controlled variable x) produces the force fm=p2 x a, which is proportional to the controlled variable, on the diaphragm area a.This force corresponds to the actual value and is compared at the plug stem with the spring force fs=set point
Media:water
Port size:1/2''~12''
The temperature regulators consist of a valve(globe or three-way valve), or including temperature sensor, set point adjuster, capillary tube and operating element.
Special features
Low-maintenance p-regulators requiring no auxiliary energy.
Globe or three-way valve for liquids, gases and vapors, especially for the heat transfer media of water, oil and steam or for coolants, for example cooling water or brine.
Valve body material optionally available as cast iron, spheroidal graphite iron(din version only), cast steel, cast stainless steel or red brass.Din and ansi versions available.
Media:water
Port size:1/2''~12''
1)the force limiter with internal excess pressure limiter in the acutator protects the seat and plug against damage on exceeding the permissible differential pressure.
2)cast iron only in pn16.Spheroidal graphite iron only in pn25
3)temperature seat point can be adjusted in all versions
4)optionally also as a flow and pressure regulator
5)higher temperatures on request
6)for some sizes also available of stainless forged steel 1.4571
Media:water
Port size:1/2''~12''
Size01001100160„67501001100160„692501001100160„6730106¥730106¥9801001100160„67301001100„30…20801001100160„6730106¥730106¥98 (dn125 ~ dn200)
Rating01001100160„67501001100160„692150 01001100160„67301001100„30…20600lb (pn16~pn100)
Body materials01001100160„67501001100160„692carbon steel, stainless steel, alloy steel, duplex steel
Body materialscarbon steel,
Type: straight-through, cast globe valve
Size: 1-1/2'', 2'', 2-1/2'', 3'', 4'', 5'', 6'', 8'' (dn40 – dn200)
Pressure rating: ansi 125 ~ ansi 600 (pn16~pn100, jis10k~jis40k)
Body material: carbon steel, stainless steel, alloy steel
Operation: pneumatic diaphragm actuator, pneumatic piston actuator, electric actuator
