Stainless Steel High-Pressure Cryogenic Globe Valve with Bolted Bonnet

Overview

The IRELAND 160700HP is a high-integrity, bolted-bonnet stainless steel globe valve engineered for demanding cryogenic and high-pressure process applications. Designed in accordance with ISO 5208, EN 1515-1, and ASME B16.34, it employs a precision-machined, integral seat and lapped sealing surface—validated to pass bubble-tight shutoff testing per ISO 5208 Class A. Its core architecture integrates a thermally extended bonnet and stem fabricated from low-carbon austenitic stainless steel (304L/316L), minimizing conductive heat transfer between ultra-cold process media (down to –220 °C) and the packing assembly. This thermal decoupling preserves graphite packing integrity under sustained cryogenic cycling and high differential pressure, ensuring long-term leak-tight performance without external heating or insulation.

Key Features

• Full copper-free construction: All wetted surfaces—including body, seat, stem, and external components exposed to ambient air—are free of copper and copper alloys, complying with oxygen service compatibility requirements per CGA G-4.4 and ASTM G93.
• Stellite™-hardfaced integral seat: Provides exceptional resistance to galling, erosion, and micro-wear during frequent throttling or high-velocity flow of abrasive or reactive gases (e.g., liquid nitrogen, oxygen, argon, hydrogen).
• Dynamic-load graphite packing system: Engineered for stable sealing force retention across wide thermal excursions and pressure differentials up to PN630; qualified for repeated cycling at –196 °C without cold-flow relaxation.
• Bolted bonnet design with extended neck: Facilitates maintenance access while maintaining structural rigidity and thermal isolation; allows integration of extended-stem actuators without compromising cold box envelope integrity.
• Fire-safe certification: Complies with ISO 10497 and API RP 2510 for hydrocarbon and cryogenic service; metal-to-metal secondary seal engagement activated upon packing failure at elevated temperatures.
• Modular configuration options: Includes throttling plug geometry, PCTFE (Kel-F™)-coated plug for enhanced chemical resistance, socket-weld or ANSI/EN flanged ends, lockable handwheel, and ISO 5211-compatible pneumatic actuation (fail-open or fail-closed).

Sample Compatibility & Compliance

The 160700HP is validated for continuous service with liquefied industrial gases—including O₂, N₂, Ar, H₂, LNG, and CO₂—as well as aggressive process streams in petrochemical, air separation (ASU), hydrogen energy infrastructure, and cryogenic transport systems. It meets material cleanliness requirements per ASTM A351 CF3M and ASTM A182 F316L, with full traceability documentation (3.1 material test reports). All valves undergo 100% shell and seat pressure testing per ISO 5208, including helium leak testing at ≤1 × 10⁻⁹ mbar·L/s for critical applications. The absence of copper-containing alloys satisfies strict oxygen compatibility protocols mandated by NFPA 51B, EIGA Doc. 130/05, and ISO 20471.

Software & Data Management

While the base 160700HP is a manually operated mechanical device, its actuated variants support integration into DCS/SCADA environments via standard analog (4–20 mA) or digital (HART, Foundation Fieldbus, PROFIBUS PA) communication protocols. Actuator position feedback, stroke time logging, and diagnostic event timestamps are recorded with audit-trail capability compliant with FDA 21 CFR Part 11 when deployed with validated control systems. Configuration data—including setpoint limits, travel calibration, and failure mode parameters—is stored in non-volatile memory and exportable for QA/QC reporting and regulatory review.

Applications

• Air Separation Units (ASUs): Liquid oxygen/nitrogen feed control, reboiler bypass, and high-purity product take-off lines.
• Hydrogen Refueling Stations: High-pressure (up to 900 bar pre-stage) cryogenic hydrogen isolation and metering.
• LNG Terminals: BOG (boil-off gas) recirculation, LNG loading arm isolation, and cold box inter-stage pressure regulation.
• Chemical & Pharmaceutical Synthesis: Precise dosing of cryogenic solvents (e.g., liquid ethylene, propylene) in exothermic reaction trains.
• Transport & Storage: ISO tank container inlet/outlet isolation valves and emergency shutdown systems for cryogenic hazardous material carriers.

FAQ

What is the maximum allowable operating temperature for this valve?

The valve is rated for continuous service from –220 °C to +200 °C, with material selection and thermal expansion compensation optimized for stability across this full range.
Does the valve meet fire-safe standards for hydrocarbon service?

Yes—it is certified to ISO 10497 and designed to ISO 15848-1 for fugitive emissions, with a metal-to-metal backup seal that engages automatically during fire exposure.
Can this valve be used in oxygen service above 21% concentration?

Yes—its copper-free construction, electro-polished wetted surfaces, and particle-free cleaning per ASTM G93 Level C qualify it for high-concentration gaseous and liquid oxygen applications.
Is third-party type testing documentation available?

All production units are supplied with EN 10204 3.1 mill test reports, ISO 5208 leakage test certificates, and fire-test reports from accredited laboratories (e.g., TÜV SÜD, Bureau Veritas).
What actuator interface standards does the valve support?

It features ISO 5211 mounting flange (F03/F04/F07), enabling direct coupling with pneumatic, electric, or electro-hydraulic actuators meeting IEC 60534-6 and NAMUR standards.