{"id":3734,"date":"2022-08-24T14:05:12","date_gmt":"2022-08-24T06:05:12","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?post_type=product&p=3734"},"modified":"2026-07-29T19:24:57","modified_gmt":"2026-07-29T11:24:57","slug":"liquid-nitrogen-control-valve","status":"publish","type":"product","link":"https:\/\/raymonvalve.com\/it\/product\/liquid-nitrogen-control-valve\/","title":{"rendered":"Valvola di regolazione per azoto liquido"},"content":{"rendered":"
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Engineering scope<\/div>\n

What controls a responsible Liquid Nitrogen Control Valve selection<\/h2>\n

A Liquid Nitrogen Control Valve is evaluated for modulating process control. A throttling element changes effective flow area in response to a control signal. Installed characteristic, Cv, pressure recovery, trim velocity and actuator resolution determine control quality.<\/p>\n

Use the name as a starting point. Technical approval still depends on cryogenic control with flashing, low-temperature materials and heat-leak management, the complete service envelope, installed interfaces and measurable acceptance.<\/p>\n

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Liquid Nitrogen<\/h3>\n

Cryogenic control with flashing, low-temperature materials and heat-leak management. Provide liquid\/vapor phase conditions, minimum temperature, pressure drop, flow range, flashing, stem extension and cryogenic test scope.<\/p>\n<\/div>\n

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Application envelope<\/h3>\n

Confirm every pressure, temperature, differential-pressure and cycling case for this Liquid Nitrogen Control Valve.<\/p>\n<\/div>\n

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Installed interface<\/h3>\n

Verify ends, bore, flow direction, orientation, operator envelope, loads and maintenance access.<\/p>\n<\/div>\n

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Order-specific boundary<\/h3>\n

Published information supports initial screening; final size, class, materials, trim, operation, tests and documents are fixed in approved order records.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Existing listing data<\/div>\n

Published configuration data for Liquid Nitrogen Control Valve\u2014confirmation required<\/h2>\n

The values below are transcribed from the previous public product listing so useful model information is not lost during the quality rebuild. They are not a universal available range, certificate or order commitment. Confirm every value in the accepted quotation, tag datasheet and approved drawing.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nPrevious listing<\/th>\nRequired order check<\/th>\n<\/tr>\n<\/thead>\n
Product type<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm the exact model, construction and supplied configuration.<\/td>\n<\/tr>\n
Nominal size \/ DN<\/b><\/td>\n15-50<\/td>\nConfirm each ordered tag and available trim or bore combination.<\/td>\n<\/tr>\n
Pressure rating<\/b><\/td>\nPN250-420 ANSI Class 1500-2500<\/td>\nConfirm governing rating standard, class and temperature basis.<\/td>\n<\/tr>\n
Temperature<\/b><\/td>\n17~+230\u2103<\/td>\nConfirm design, operating, startup and upset metal temperatures.<\/td>\n<\/tr>\n
End connection<\/b><\/td>\nRF, RJ, BW, Lens Pad<\/td>\nConfirm standard, facing, schedule, bore and mating interface.<\/td>\n<\/tr>\n
Flow coefficient \/ characteristic<\/b><\/td>\nLinear<\/td>\nConfirm calculated cases, trim, travel and installed behavior.<\/td>\n<\/tr>\n
Body \/ bonnet material<\/b><\/td>\nForged 25, Forged 1Cr18Ni9 Forged 0Cr17Ni12Mo2<\/td>\nConfirm component grade, product form, heat treatment and records.<\/td>\n<\/tr>\n
Trim \/ closure material<\/b><\/td>\nForged 9Cr18MoV+N Forged 1Cr18Ni9 Forged 00Cr17Ni12Mo2+N Optional: none Features: – Cast straight, angle, or forged straight, angle body -Labyrinth type multi-stage throttling of fluid channel, constantly changing the direction of fluid, controlling fluid velo<\/td>\nConfirm every wetted component, hardness, coating and pairing.<\/td>\n<\/tr>\n
Seat \/ seal material<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm compatibility, leakage criterion and pressure-temperature limit.<\/td>\n<\/tr>\n
Operation \/ actuator<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm worst-case load, fail state, utilities, speed and accessories.<\/td>\n<\/tr>\n
Leakage basis<\/b><\/td>\nClass IV Material:<\/td>\nConfirm standard, edition, test direction, medium and measurable acceptance.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Evidence boundary:<\/b> where the previous listing was incomplete or awkwardly translated, this page does not guess a value. Raymon Valve should replace provisional web data with the controlled product datasheet when it is available.<\/p>\n<\/div>\n<\/section>\n

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Specification workflow<\/div>\n

Connect each selection decision to a controlled record<\/h2>\n

Record the question, accepted answer and proof so the Liquid Nitrogen Control Valve proposal can be audited across disciplines.<\/p>\n

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Review area<\/th>\nEngineering question<\/th>\nRequired record<\/th>\n<\/tr>\n<\/thead>\n
Sizing cases<\/td>\nMinimum, normal, maximum, startup and upset cases require verified fluid properties and pressures.<\/td>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/td>\n<\/tr>\n
Trim duty<\/td>\nCavitation, flashing, choked gas flow, noise, erosion and rangeability must be evaluated.<\/td>\nCapture the selection basis, approved deviation if any and the record used for acceptance.<\/td>\n<\/tr>\n
Actuator<\/td>\nRequired thrust or torque, fail action, stroking speed and utility supply must be coordinated.<\/td>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/td>\n<\/tr>\n
Accessories<\/td>\nPositioner, solenoids, limit switches, air set and hazardous-area requirements form one package.<\/td>\nName the controlling document, responsible reviewer and inspection or calculation record.<\/td>\n<\/tr>\n
Liquid Nitrogen<\/td>\nProvide liquid\/vapor phase conditions, minimum temperature, pressure drop, flow range, flashing, stem extension and cryogenic test scope.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

A standard title alone is not acceptance. Map its scope, edition and required evidence to the valve tag.<\/p>\n<\/div>\n<\/section>\n

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Application boundaries<\/div>\n

Where this configuration may fit\u2014and what can make it fail<\/h2>\n

Do not size a control valve from pipe diameter alone; incorrect Cv can cause poor resolution, noise, cavitation or premature trim damage. The final decision must cover system interactions, end-of-life loads, degradation and how failure will be detected or contained.<\/p>\n

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Fluid composition plus minimum, normal, maximum, startup and upset cases for the Liquid Nitrogen Control Valve<\/div>\n
Isolation\/control\/non-return function, frequency, directionality and measurable shutoff acceptance<\/div>\n
Piping class, mating ends, bore, installed length, orientation, loads and maintenance clearance<\/div>\n
Body, trim, seat, packing, bolting, lining or coating materials as applicable<\/div>\n
Manual or actuated operation, maximum load, fail action, speed, utilities and accessories<\/div>\n
Exact standards and editions, ITP points, material\/NDE\/pressure\/leakage tests and turnover index<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Evidence and quality<\/div>\n

Define the manufacturing and test proof before release<\/h2>\n

Evidence should identify the supplied configuration, revision, heat or lot and applicable test procedure. Use the valve standards guide<\/a> to separate product, rating, dimensional, end-connection and test scope.<\/p>\n

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Design basis<\/h3>\n

Tag requirements, design review, materials list and approved exception register.<\/p>\n<\/div>\n

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Material identity<\/h3>\n

Tag-to-component material mapping with certificates, processing records and identity checks.<\/p>\n<\/div>\n

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Inspection and tests<\/h3>\n

Approved ITP, procedures, calibrated instruments, results, witness records and NCR closeout.<\/p>\n<\/div>\n<\/div>\n

Liquid-nitrogen control requires verified low-temperature materials and phase-aware sizing.<\/p>\n

Do not infer certification or guaranteed performance from this page. Accept only the order-specific evidence required by the purchaser.<\/p>\n<\/div>\n<\/section>\n

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RFQ checklist<\/div>\n

Data to send for a technically complete quotation<\/h2>\n

A useful RFQ combines process data, piping class, construction and materials, operator\/actuator requirements, acceptance criteria and delivery documents.<\/p>\n

For a Liquid Nitrogen Control Valve, also highlight cryogenic control with flashing, low-temperature materials and heat-leak management. Keep an open-point register for any item that could change safety, function, cost or delivery.<\/p>\n

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Request a tag-level technical review<\/h2>\n

Send the valve list and project requirements. Raymon Valve will identify missing inputs, clarify construction and return an order-specific quotation basis.<\/p>\n<\/div>\n

Submit Your Datasheet<\/a>Compare Control Valve Options<\/a><\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Related engineering route<\/div>\n

Continue the selection review<\/h2>\n
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Product family<\/h3>\n

Compare the main constructions and selection boundaries in this valve family.<\/p>\n

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Project Valve Review<\/h3>\n

Resolve interacting pressure, temperature, corrosion, wear or project risks.<\/p>\n

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Testing and inspection<\/h3>\n

Define pressure-test scope, acceptance, instruments, witness points and records.<\/p>\n

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