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10mm Safety Relief Valve 64610A1273

SKU: 64610A1273

10mm Nominal Bore Enclosed Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.07...

6mm Bore Safety Relief Valve 818061223

SKU: 818061223

6mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)4.0...

ASL57 LED

SKU: ASL57 LED

ASL57 LED – High-Contrast Illumination for Non-Ex Industrial Process Environments The ASL57 LED luminaire delivers powerful, high-contrast lighting for visual flow indicators, ...

Automotive Industry

SKU: Automotive Industry

Automotive Glass Solutions — Precision, Performance & Clarity At John Moncrieff Ltd, we engineer precision glass components for the UK’s automotive and motorsport sectors. ...

Blown Glass can utilise various glass types to create decorative pieces in clear or coloured glass, as well as more specialist glass types designed for resisting heat or chemical attack.. Each glass t...

Borosilicate Glass

SKU: Borosilicate Glass

Borosilicate Glass: The Premium Standard for Precision Applications Borosilicate glass is renowned for its outstanding resistance to thermal shock, chemical corrosion, and ...

Circular Sight Glass

SKU: Circular Sight Glass

John Moncrieff — Sight Glass Materials & Selection Guide Selecting the correct sight glass material is essential for ensuring long-term performance, safety, and clarity under vary...

Composite Type C – Underpressure

SKU: Composite Type C – Underpressure

Composite Type C – Underpressure Bursting Disc The Composite Type C – Underpressure bursting disc is engineered for precise, reliable protection at low to medium burst pre...

D Orifice Leser Valve 1" #150 x 2" #150 5262.0014

SKU: 5262.0014

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

DN15 LGS HI-FLOW Relief Valve H3615A3A77

SKU: H3615A3A77

15mm Nominal Bore Single Trim Enclosed Discharge Relief Valve for Liquid, Gas and SteamNotes:Maximum Pressure when used on Saturated Steam is 14 bar g. (203 psi g.)Overpressure = Set pressure +10% (o...

DN15 LGS Relief Valve L3615A3277

SKU: L3615A3277

15mm Nominal Bore Single Trim Enclosed Discharge Relief Valve for Liquid, Gas & SteamNotes:Maximum Pressure when used on saturated steam us 14 bar g. (203 psi g.)Overpressure = Set pressure +10% (...

DN20 P3W Relief Valve P3W20A4117

SKU: P3W20A4117

The P3W Pressure & Temperature valve provides protection against both excess temperature as well as over pressurisation. The valve will automatically discharge hot water at a predetermined s...

Duran® Standard Glass Tubes (3mm - 465mm Outside Diameter)

SKU: Duran Glass Tubing

DURAN® Standard Glass Tubes DURAN® Standard Glass Tubes are renowned for their exceptional quality, precision, and durability — making them the preferred choice for a wide range of...

ESL53 LED Ex

SKU: ESL53 LED Ex

Lumistar Explosion-Proof Sightglass Luminaire This compact, high-performance Lumistar Ex luminaire is engineered for powerful illumination of closed process environments...

Flow Indicator - Gunmetal

SKU: Flow Indicator - Gunmetal

Introducing Our Gunmetal Sight Flow Indicator John Moncrieff Ltd proudly presents the Gunmetal Sight Flow Indicator — engineered for precise, real-time liquid flow monitori...

Flow Indicator - Style F

SKU: Flow Indicator - Style F

Introducing Our Versatile Style F Sight Flow Indicator John Moncrieff Ltd presents the Style F Sight Flow Indicator — a versatile, precision-engineered solution for monitor...

Flow Indicator - Style P

SKU: Flow Indicator - Style P

Introducing Our Versatile Style P Sight Glass John Moncrieff Ltd presents the Style P Sight Glass — a precision-engineered solution for reliable liquid monitoring and inspe...

Flow Indicator - Style S

SKU: Flow Indicator - Style S

Introducing Our High-Performance Style S Sight Flow Indicator John Moncrieff Ltd presents the Style S Sight Flow Indicator — engineered for precise liquid-flow monitoring w...

Flow Indicator - Style T

SKU: Flow Indicator - Style T

Introducing Our Versatile Style T Sight Glass Tube John Moncrieff Ltd introduces the Style T Sight Glass Tube — a precision-engineered unit designed for full-visibility liq...

Flow Indicator - Style W

SKU: Flow Indicator - Style W

Introducing Our Durable Style W Sight Glass John Moncrieff Ltd introduces the Style W Sight Glass — a high-performance, durable visual inspection unit designed for precise...

Flow Indicator - Style WF

SKU: Flow Indicator - Style WF

Introducing Our Durable Style WF Sight Glass John Moncrieff Ltd proudly introduces the Style WF Sight Glass — a high-performance unit engineered for precise visual inspecti...

Flow Indicator - Vista Ball

SKU: Flow Indicator - Vista Ball

Introducing Our Vista Ball Flow Indicator John Moncrieff Ltd presents the Vista Ball Flow Indicator — a compact, high-visibility device engineered for accurate and reliable...

Flow Indicator - Vista Spinner

SKU: Flow Indicator - Vista Spinner

Introducing Our Vista ‘Spinner’ Type Flow Indicator John Moncrieff Ltd presents the Vista ‘Spinner’ Type Flow Indicator — an advanced, compact device designed for accurate...

Gauge Glass - Reflex

SKU: Gauge Glass - Reflex

John Moncrieff — Maxos Reflex Gauge Glass At John Moncrieff Ltd, we supply Maxos Reflex Gauge Glass, recognised worldwide for its clarity, strength, and precision engineering. ...

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