Types 2010 – 2175
Flowline pilot valves



These flowline pilot valves are pilot-operated, three port, two position valves with a spring return action. The pressure at which the valve functions is variable by adjusting the spring force – a wide range of pressure settings is covered by using seven interchangeable sensing head assemblies.
The pilots can be supplied with either nomally open or normally closed slide configurations, and function with a 'block before bleed' action.		 The pilots are used to switch a pneumatic or hydraulic control pressure on rising or falling flowline pressures in pipeline valve and wellhead safety control systems.
Construction materials, predominantly 316 stainless steel and CA104 aluminium-bronze, and seals of fluoroelastomers and PTFE materials ensure high corrosion resistance and comply with NACE Standard MR-01-75 (latest revision as applicable).

These pilot valves conform to Directive 94/9/EC relating to equipment intended for use in potentially explosive atmospheres and is ATEX (ATmosphere EXplosible) certified.
Marshalsea Hydraulics has been assessed by SGS Société Générale de Surveillance SA and certified as meeting the requirements of ISO 9001:2000 for the design, development, manufacture and servicing of hydraulic pumps, relief valves and intensifiers.


Operating parameters
Working pressure – standard 17.3 bar (250 psi).
Working pressure – high Available on request.
Process pressure 690 bar (10,000 psi).max
380 bar (5,510 psi) max – 2xX1x only.
Operating media Mineral oils, water, water-glycol mixtures, air, natural and sour gases.
Connections – controls 1/4" NPT.
Connections – process 1/2" or 3/4" NPT.
Flow rate, nominal 4.5 litres/min (1.0 imp gall/min).
Working temperature – standard –20°C to + 130°C.
Working temperature – arctic Available on request.
recommended filtration 25 micron.

Type numbers and specifications
Type number
N/ON/C		 Pressure
(bar)(psi)		 Process
connection
20102110 3.5 – 17.3 50 – 250 1/2" NPT
20152115 3.5 – 17.3 50 – 250 3/4" NPT
20202120 13.7 – 31 200 – 450 1/2" NPT
20252125 13.7 – 31 200 – 450 3/4" NPT
20302130 31 – 59 480 – 850 1/2" NPT
20352135 31 – 59 480 – 850 3/4" NPT
20402140 59 – 152 850 – 2,200 1/2" NPT
20452145 59 – 152 850 – 2,200 3/4" NPT
20502150 152 – 372 2,200 – 5,400 1/2" NPT
20552155 152 – 372 2,200 – 5,400 3/4" NPT
20602160 372 – 690 5,400 – 10,000 1/2" NPT
20652165 372 – 690 5,400 – 10,000 3/4" NPT
20702170 15.9 – 89 230 – 1,300 1/2" NPT
20752175 15.9 – 89 230 – 1,300 3/4" NPT