Precision Injection Valve for Cryogenic Systems | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Precision Injection Valve

Definition

The Precision Injection Valve is a component used in cryogenic injection systems to regulate the flow of liquefied gases such as liquid nitrogen or other cryogenic media into a process chamber. It is engineered for exact metering and minimal leakage, ensuring accurate dosing for applications like thermal management, chemical reactions, or material processing. The valve operates across a temperature range of -196°C to 80°C and is available in connection sizes from DN15 to DN50, with flanged or welded ends. Its body is made of 316L stainless steel, and the seat material is PCTFE, which provides reliable low-temperature sealing. The valve is designed for an operating pressure range of 1.0 to 1.6 MPa, with a flow coefficient (Cv) between 0.2 and 2.5. It achieves a leakage rate of ≤0.001 ml/min at rated pressure and temperature, and a response time of ≤50 ms from signal to full stroke. Repeatability is ±0.5% of full stroke. Actuation is via solenoid or pilot operation with a 24 V DC supply (±10%), and power consumption is ≤12 W. The valve has an ingress protection rating of IP65, making it dust-tight and protected against water jets. Weight varies from 2.5 to 8.0 kg depending on size and actuation. The working principle involves an actuator (pneumatic, hydraulic, or electric) moving a valve stem to open or close an orifice, with precision achieved through tight-tolerance machining, specialized low-temperature seals, and feedback control systems. For selection, verify model-specific parameters such as pressure, flow, and connection size with the manufacturer. Maintenance signals include increased leakage or response time, and failure boundaries are defined by the operating limits. Always confirm values and standards with the legal manufacturer or supplier.

Working Principle

The valve uses an actuator (pneumatic, hydraulic, or electric) to move a valve stem, which opens or closes an orifice to control fluid flow. Precision is achieved through tight-tolerance machining of sealing surfaces, specialized low-temperature seals, and often feedback control systems that adjust position based on flow or pressure sensors. This ensures repeatable and accurate injection volumes even under cryogenic conditions.

Common Materials

Stainless Steel (e.g., 316L), Cryogenic-grade Elastomers (e.g., PTFE, Kalrez), Hardened Tool Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Pressure	1.0–1.6 MPa
Flow Coefficient (Cv)	0.2–2.5 Cv	Select based on required flow rate
Leakage Rate	≤0.001 ml/min	At rated pressure and temperatureISO 15848-1
Operating Temperature	-196–80 °C	Cryogenic to ambient
Response Time	≤50 ms	From signal to full stroke
Repeatability	±0.5 %	Of full stroke
Actuation Voltage	24 ±10% V DC	Solenoid or pilot operated
Power Consumption	≤12 W	At nominal voltage
Ingress Protection	IP65	Dust-tight and water-jet protectedIEC 60529
Body Material	316L SS	Cryogenic serviceASTM A276
Seat Material	PCTFE	Low temperature sealingASTM D1430
Connection Size	DN15–DN50 mm	Flanged or weldedISO 7005
Weight	2.5–8.0 kg	Depending on size and actuation

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Valve Body
Main structural housing that contains fluid and mounts to the system.

Material: Stainless Steel
Stem and Seat Part
Precision-machined components that form the sealing interface to control flow.

Material: Hardened Tool Steel
Cryogenic Seal
Specialized seal (e.g., bellows or spring-energized) that maintains integrity at low temperatures.

Material: PTFE or Kalrez
Actuator
Moves the stem to open or close the orifice.
Feedback Control System Optional
Trims valve position from flow or pressure feedback, on closed-loop versions.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Cryogenic Injection System

View system integration details

Manufacturers of Precision Injection Valve

Manufacturer profiles associated with Precision Injection Valve.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the operating pressure range of this valve?

The operating pressure range is 1.0 to 1.6 MPa. Always verify the exact range for your specific model.

What materials are used for the body and seat?

The body is made of 316L stainless steel (ASTM A276), and the seat material is PCTFE (ASTM D1430) for low-temperature sealing. These materials are suitable for cryogenic service.

What is the leakage rate and response time?

The leakage rate is ≤0.001 ml/min at rated pressure and temperature, per ISO 15848-1. The response time from signal to full stroke is ≤50 ms. These values should be confirmed for your application.

What are the available connection sizes?

Connection sizes range from DN15 to DN50, with flanged or welded ends, per ISO 7005. The weight varies from 2.5 to 8.0 kg depending on size and actuation.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 100 bar (0 to 1450 psi)
flow rate:	0.1 to 10 L/min (adjustable)
temperature:	-196°C to +50°C (cryogenic to ambient)
slurry concentration:	Up to 20% solids by weight (non-abrasive)

Precision Injection Valve

Product Specifications

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