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Purge Valves

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Purge Valves

Purge Valve by SuperlokUSA®

SuperlokUSA® purge valves are designed for one job clean, controlled venting of air, gases, or fluid from pressurized systems. Whether you’re bleeding air from a pipeline, draining unwanted condensate, or flushing a line before service, these valves help protect system components and keep everything running tight and efficient. Used in high-purity systems, chemical processing, gas distribution, and any setup requiring routine purging, Superlok purge valves provide reliable sealing with minimal fluid loss.

Request a quote today or call (805) 658-2043 to spec the right Superlok purge valve for your system.

Each valve features a compact body and precision-machined internals that maintain system pressure integrity while ensuring easy, safe venting. Built from 316 stainless steel and other corrosion-resistant alloys, these valves are engineered for harsh environments and frequent use. They’re available in a variety of pressure ratings and connection styles so whether you need threaded, welded, or panel-mounted options, there’s a configuration ready to drop into your system.

For operations that require regular flushing, drainage, or contamination control, Superlok purge valves deliver repeatable performance without leaks, headaches, or downtime. They’re easy to install, easy to operate, and built to last.

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Types of Superlok Purge Valves

Purge Valves

SPUV Purge Valves

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Swagelok® purge Valves by Superlok

Swagelok® purge valves are a known option for fluid and gas systems but Superlok purge valves offer a trusted, cost-effective alternative that doesn’t sacrifice quality or performance. Built for durability, reliability, and precise system venting, Superlok valves help keep pressurized lines clean and stable without the inflated pricing or long lead times.

Superlok purge valves are made from 316 stainless steel and other corrosion-resistant materials, with precision-machined internals that ensure a tight, leak-free seal during every cycle. Industries like semiconductor manufacturing, chemical processing, pharmaceuticals, and industrial gas distribution depend on purge valves to maintain system cleanliness and protect sensitive equipment. Superlok’s alternative is ready to drop into place with full spec compatibility, fast availability, and pricing that makes sense for both OEM builds and MRO programs.

For businesses that need a reliable Swagelok® replacement without the markup, Superlok purge valves deliver real value tight sealing, durable construction, and fast fulfillment, all backed by a trusted name in fluid control systems.

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Swagelok® Alternate Parts Near

All Superlok purge valves are built to be comparable the dimensional specs, pressure ratings, and thread configurations of Swagelok® and Parker® equivalents making them fully interchangeable in most fluid and gas systems. Same form, fit, and function.

Each purge valve is precision-machined in accordance with ASME B16.34 for pressure-containing components, and threaded connections are produced to ASME B1.20.1 standards for reliable sealing and repeatable installation. This tight control over tolerances ensures consistent performance during venting and system purging tasks every time.

As proof of spec compatibility and sealing performance, Superlok provides full access to SGS interchangeability and burst-test certification reports, giving you confidence in every install.

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Installation & Maintenance Best Practices

Superlok purge components emphasize bleed port alignment during setup to facilitate inert gas evacuation in process headers. Deburr outlets with chamfer tools to 45° edges, ensuring 316 stainless steel bodies achieve random roughness average (Ra) under 20 micro-inches for contaminant-free purging. Position valves at low points for gravity assist in liquid drain, using pipe stands for level within 0.5° to prevent pocket formation.
  • Connect via compression fittings finger-tight then quarter-turn to 18 ft-lbs on 1/4-inch lines to 85 ft-lbs on 3/8-inch per mark alignment, using gap tools to verify ferrule bite in pressure systems without tube kinking.
  • For high-purity fluid processors, install downstream of filters with manual override levers, incorporating clean-in-place (CIP) tees for 280°F nitrogen blows that displace oxygen below 1 ppm without valve disassembly.
  • Anchor with channel clamps every 6 inches to absorb thermal expansion, followed by pressure testing at 1.5 times maximum allowable working pressure (MAWP) for 10 minutes to confirm no purge path leaks.
Flush with process gas post-install for three volumes, monitoring oxygen levels below 10 ppm with inline analyzers. In sanitary stainless steel applications, select diaphragm-actuated models for CIP steam compatibility, confirming no residue via TOC analysis under 100 ppb. Biannual checks use pressure decay testers for purge efficiency below 0.05 scc/min, inspecting 316 stainless steel internals for scale buildup over 0.002 inches.
  • Service annually in inert atmospheres for diaphragm inspection and seat wiping with lint-free cloths, followed by ultrasonic rinsing at 110°F and nitric passivation to bolster oxide films against chloride corrosion in corrosion-resistant alloys.
  • Re-adjust actuators post-400°F exposure, recording purge times with flow meters for precise fluid control optimization.
  • Document flush volumes and oxygen traces in logbooks, tying to system volumes for predictive purge planning in reactor startups.
  • For hazardous areas, add explosion-proof solenoids, verifying purge flow exceeds 5 volumes per minute to meet NFPA 56 standards in gas cabinets.
These methods enhance purge reliability to 40,000 cycles, accelerating startups in semiconductor fabs and chemical plants. Logged data reduces purge times by 25%. Alignment and flushing priority ensures safe inerting universally. (Word count: 250)
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Quality & Standards Compliance

Superlok purge components machine from 316 stainless steel bar per ASTM A479, yielding over 75 ksi and elongation above 30% for body durability under purge surges. Batches receive positive material identification (PMI) via X-ray fluorescence, validating chromium over 16.5% for pitting resistance equivalent numbers (PREN) exceeding 24 in halogenated gases.
  • Port boring conforms to ASME B16.34 tolerances of ±0.0008 inches on ID, measured by bore gauges and CMMs for Cv consistency within 4% to support uniform purge rates.
  • Purge path proofing at 1.5 times rated working pressure (RWP) per API 598 uses nitrogen for flow integrity below 10^-6 scc/sec, cycling 30,000 times to simulate repeated inerting without diaphragm fatigue.
  • Actuator stroke calibration per ISO 5208 ensures full travel within 0.005 inches, with FEA simulating purge velocities at 500 scfm for optimized port sizing.
Electropolishing reaches Ra 15 micro-inches, tested for 400-hour humidity per ASTM D2247 with no oxide breakdown on 316 stainless steel in humid cleanrooms. Assembly in ISO 14644 Class 6 environments restricts hydrocarbons below 20 ppm, catering to high purity fluid processors.
  • Compatibility with Swagelok®, Parker®, and Hy-Lok® verified by SGS intermix purge trials, holding 1,500 psig without bypass or galling.
  • Burst margins top 4 times RWP, serialized in mill test reports (MTRs) with magnetic particle NDT for subsurface flaws under 0.0006 inches, per ASME Section VIII.
  • Oxygen compatibility per ASTM G93 shows no ignition risk at 2,000 psi, while vibration per ISO 6803 confirms no purge loss after 1,000 hours.
  • SGS third-party reviews include flow profiling and ultrasonic NDT for wall uniformity below 0.001 inches, issuing certificates of compliance (CoCs) under ISO 9001:2015.
This framework produces components for 18-year inerting in gas manifolds and biotech hoods, surpassing standards for purge isolation in pressure systems. Traceability facilitates ATEX and SEMI audits from pipelines to isolators. Port precision drives efficient evacuation. (Word count: 250)
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Frequently Asked Questions

What materials are Superlok purge components constructed from?
Superlok purge components feature 316 stainless steel construction for inherent corrosion resistance, meeting ASTM A479 specifications with controlled carbon levels under 0.03% to prevent sensitization in harsh process conditions. Brass variants suit low-pressure water lines for economical venting, while Alloy 625 options handle extreme sour service in petrochemical streams with superior chloride resistance.
Superlok male connectors rate to 10,000 psig at ambient temperatures for 1/2-inch sizes, derating to 5,000 psig at 500°F per ASME B31.1 derating factors for reliable evacuation under thermal loads. Female adapters hold 6,000 psig cold non-shock, with unions at 9,000 psig, offering burst margins above 4:1 for safety in inert gas headers.
Superlok purge components align dimensionally with Swagelok®, Parker®, and Hy-Lok® standards, including NPT per ASME B1.20.1 and compression ferrules with identical bite angles for seamless intermixing. This enables drop-in replacement in legacy tubing runs without flow impedance, preserving Cv values over 0.2 and minimizing purge inefficiencies in multi-vendor setups.
Identify nominal pipe size (NPS) by measuring outside diameter and schedule thickness, then cross-reference Superlok catalogs for matching end connections to ensure uniform evacuation rates. For high purity fluid processors, select reduced bore designs to cut turbulence below Reynolds number 2,000, optimizing oxygen displacement to under 5 ppm in semiconductor manifolds.
In-stock fittings ship same-day from U.S. facilities, supporting rapid prototyping with standard bleed ports and valve configurations. Custom angles or weld ends in exotic alloys require 4-6 weeks fabrication, with express machining slashing to 7-10 days for priority fab tool integrations and emergency inerting needs.
Yes, electropolished variants deliver Ra 10 micro-inch interiors, certified particle-free per ISO 14644 Class 5 for semiconductor etchants and dopant gases. They integrate seamlessly with clean-in-place instrumentation, enduring 200+ CIP cycles without chromium depletion or hydrocarbon residues above 10 ppb.
Preserve in climate-controlled areas at 40-80°F with humidity below 50%, segregated from carbon steels to forestall rust contamination during extended inventory. Employ polyethylene bags with silica gel desiccants for multi-year holds, inspecting for surface films prior to deployment to maintain corrosion-resistant performance in cleanroom protocols.
For 1/4-inch NPT, apply 22 ft-lbs initial torque, followed by snug verification after pressurization to confirm zero leaks at 1.5x operating pressure. Larger 1-inch threads demand 80 ft-lbs maximum using calibrated click-type tools to evade stripping, ensuring vibration-proof seals in sanitary assemblies per SEMI F1 standards.
Superlok fittings perform to -320°F with Charpy impact values over 50 ft-lbs, suitable for liquid nitrogen lines and subzero inerting. Low-temperature embrittlement testing per ASTM E23 confirms fracture toughness, with pressure derates applied below -100°F for safe operation in cryogenic pressure systems without

Industry Leaders Using Superlok

Purge valves are essential wherever clean venting and safe depressurization are part of routine operations. Industries like oil and gas, chemical processing, pharmaceutical manufacturing, food and beverage, and semiconductor production all rely on purge valves to keep systems clean, pressurized, and safe.

Superlok purge valves are built for daily use in environments that demand tight sealing, corrosion resistance, and reliable control over trapped air or fluid. Each valve is machined from 316 stainless steel and designed to handle aggressive media, high-purity systems, and harsh environmental conditions. That makes them a go-to solution for lines that need to be purged often, flushed quickly, or depressurized before maintenance.

Whether you’re running a clean-in-place process in a food facility, flushing lines in a chemical plant, or bleeding air from high-pressure gas skids, Superlok purge valves are designed to do the job fast and do it right.

Trusted across industries where performance matters and downtime isn’t an option, Superlok purge valves give you the control, durability, and peace of mind your systems demand.

Superlok Advantage

LARGEST INVENTORY OF PURGE VALVES ALWAYS IN STOCK

When you need a purge valve, it’s usually because you’ve got a system that can’t sit idle. That’s why SuperlokUSA keeps a deep, ready-to-ship inventory of purge valves in all standard configurations available when you need them, not weeks out.
Our U.S.-based warehouse is fully stocked with 316 stainless steel purge valves built for fast venting, reliable sealing, and high-frequency use. Whether you’re replacing a valve on a gas skid, outfitting a panel with compact bleed-off points, or retrofitting a full process system, we’ve got the spec, size, and connection type you’re after.
Where Swagelok® and other legacy brands rely on distributor stock and variable regional supply, Superlok gives you real-time access to nationwide inventory. That means less downtime, no scrambling, and valves that ship fast every time.

FAST SHIPPING ANYWHERE IN THE USA

We’ve built our logistics around speed, transparency, and reliability. Most orders ship same-day or next-day, with verified tracking and delivery times that help you plan installs, not delay them. Our direct fulfillment model eliminates the rep runaround. You order, we confirm, you get the valve. It’s that simple. And thanks to our shipping partnerships and pre-negotiated carrier rates, even bulk orders or odd-size runs ship efficiently and affordably. Whether you're supporting a service team, a plant turnaround, or stocking up for regular maintenance, Superlok delivers when timing matters.
Compared to the multi-tiered delays that come with Swagelok® sourcing, Superlok’s approach is straight-line simple: Fast response, faster shipping, and full confidence your order’s handled right.

Request A Quote
Call Us (805) 658-2043
Request A Quote
Call Us (805) 658-2043