RTG 411


Pilot operated pressure regulator

RTG 411

Pilot operated pressure regulator RTG 411

RTG 411 regulators are of indirect action type and are used for reducing and regulating the pressure of non-corrosive gases (natural gases, LPG, etc.). The regulators ensure constant maintenance of outlet pressure within the limits of the regulation class, irrespective of the fluctuations of inlet pressure and flow rate. They are designed for natural gas transportation and distribution networks. RTG 411 regulators can be used for all installations with rapid variations of the flow rate. The highly special performance of the pilot system ensures pressure accurate regulation and regulator rapid response.
Reference standards: EN 334 and EN 14382
CE Certificate according to PED 97/23/EC

MODEL RTG 411• RTG 411 SB • RTG 411 M
TECHNICAL CHARACTERISTICS Maximum allowable pressure: 16/20 bar
Inlet pressure range: 0,2 ÷ 20 bar
Outlet pressure range: 0,015 ÷ 16 bar
Minimum working differential pressure: 0,2 bar
Accuracy class (AC): ±1 ÷ 5%
Lock-up pressure class (SG): 2,5 ÷ 10%
Intervention accuracy class (AG):
- minimum up to 2,5%
- maximum up to 1%
(depending on the control pressure)
Normally open (RTG 411 FTO)
CONNECTION TYPE Equal flanges: PN 16, PN 20/ANSI Class 150
Nominal diameter: DN 25 ÷ DN 400
OPTIONAL ACCESSORIES Incorporated silencer (AM)
Minimum/maximum safety shut-off valve (SB)
Monitor (M)
Pilot electric gas preheater (WE)
OPERATING CONDITIONS Ambient temperature: -30°C ÷ +80°C
Working fluid temperature: -20°C ÷ +60°C
WORKING MEDIUM Natural gas and other non-corrosive gases

Pilot operated pressure regulator RTG 411

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