Alco Instrumentation Valves

Alco Valves are a leading British valve manufacturer and as proud Alco instrumentation valve distributors, MGA Controls can offer a comprehensive selection of their services. Alco’s wide range of instrumentation valves come in a multitude of sizes and materials, to fit your application’s specific requirements. At MGA, we can offer a variety of exceptional Alco instrumentation valves, ranging from Alco manifold valves to ball valves and more!

The extensive selection of Alco instrumentation below offers innovative solutions through a variety of valve designs. Our portfolio of Alco instrumentation valves includes double block and bleed valves, instrument needle valves, valve manifolds and high-pressure ball valves.

As Alco instrumentation valve distributors, our technical team are on hand to offer expert advice about Alco’s entire range of instrumentation valves. We can guide you to the most suitable valve for your industry needs. We are able to match an Alco valve to your specifications, whether you need a specialised valve for oil and gas applications or for general industrial use.

If you have any questions about specific Alco instrumentation products on our website, or would like to place an order, call us today on 01704 898980 or email us on store@mgacontrols.co.uk to talk to one of our team.


The 3VR Alco 3 valve remote needle manifold is a three-valve isolation manifold remote mounted (pipe to pipe). Used mainly in differential pressure transmitters and static instrument applications, the 3VR Alco 3 valve has two process isolation valves and one equalisation valve to equalise the two sides. The 3VR includes all the features of the N series Alco needle valve, multi-ring piston style packing and a back sealing facility. Process and instrument sides are both on 54mm centres to correspond with transmitter connections.

Further features and benefits include:

• 2 x isolation and 1 x equalising valve
• Temperature range -40°C to 230°C
• Ingress seals fitted as standard
• Positive no slack stem action
• 2-piece non-rotating hardened (17-4PH) tips
• Exotic materials available
• 2 x 6mm diameter mounting holes as standard
• Full material traceability

The UN series is a single isolation valve that uses a metal to metal seat and body to bonnet connection for superior capabilities at both extreme pressures and temperatures. Manufactured in 316/316L S11 stainless steel this unit is 670bar (10,000psi) rated and can operate up to a temperature of 230°C. Threaded end connections include NPT, BSPP and BSPT. The Alco UN series valve also offers a non-rotating hardened tip for extended service life. For extra safety, this unit also has a unique anti-vibration cam locking device at the body bonnet connection.

Further features include:

• 316 Stainless Steel
• 17-4ph hardened non-rotating tip
• “T” bar – stainless steel handle
• 1/4″. . . 1″ Size Range
• 10,000psi (690 bar) @ 38ºC
• -40ºC to 230ºC Temperature Range
• Full Material Traceability
• NACE MR-0175

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