Gimpel^® Steam Turbine Valves

Steam turbine protection valves are part of the overall rotating equipment protection system.

Dresser-Rand’s Gimpel® electro-hydraulic trip throttle valve (EHTTV) is a microprocessor-controlled trip throttle valve with a self-contained electro-hydraulic actuator. Designed to prevent the catastrophic failure of steam turbines, the EHTTV stops the flow of steam to the turbine in less than 0.3 seconds, a closing force that is 4-10 times faster than typical latch-type valves.

As a protection and safety device, Gimpel valves are designed and manufactured in accordance with rigorous industry specifications including the following:

API 611 and 612
ASME / ANSI B16.34 and B16.5
NEMA SM 23/24
CEMARK / PED Certification
CRN

Dresser-Rand’s Gimpel steam turbine protection valves handle a wide range of applications and are in operation in petrochemical facilities and power plants around the world.

Model	Type	Operation	Size NPS	Pressure ANSI Class	Temperature °F (limit)	Model Image
TMTTV - (Top Mechanism Trip Throttle Valve)	Mechanical Latch	Push-to-close	2 - 14 (50-350)	150 - 1,500	950 (510)	Click to View
INTTV (Inverted Trip Throttle Valve)	Mechanical Latch	Pull-to-close	3 - 20 (80 - 500)	150 - 1,500	950 (510)	Click to View
OOTV - Oil (hydraulic) Operated (Oil Operated Trip Valve)	Oil Operated	Pull-to-close	3 - 24 (80 - 600)	150 - 2,500	1,004 (540)	Click to View
OOTTV - Oil (hydraulic) Operated (Oil Operated Trip Throttle Valve)	Oil Operated	Pull-to-close	3 - 24 (80 - 600)	150 - 2,500	1,004 (540)	Click to View
OOPTV - Oil (hydraulic) Operated (Oil Operated Trip Positionable Valve)	Oil Operated	Pull-to-close	6 - 24 (150 - 600)	150 - 2,500	1,004 (540)	Click to View
EHTTV - Electro-Hydraulic Trip Throttle Valve	Electro-Hydraulic	FPull-to-close	3 - 24 (80 - 600)	150 - 2,500	1004 (540)
SDNRV - Swing Disc Non-return Extraction / Induction Power-assisted Valve	Swing Disc Non-return	Free-swinging	4 - 36 (100 - 900)	150 - 900	950 (510)	Click to View