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Needle Valve

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Stainless Steel Needle Valves

Needle Valve by SuperlokUSA®

Superlok needle valves are engineered for tight control and high-pressure performance in critical systems. With a fine-threaded stem and compact orifice, these valves provide precise flow adjustment in instrumentation and fluid handling applications especially where accuracy is non-negotiable.
Manufactured from 316 stainless steel, each Superlok needle valve delivers long-term durability, excellent corrosion resistance, and leak-free operation in harsh environments. Their compact, high-integrity design minimizes space while withstanding vibration, thermal expansion, and constant cycling. Whether you’re regulating flow in oil and gas, chemical processing, or laboratory systems, Superlok needle valves perform with consistent precision under demanding service conditions.

Request a quote today or call (805) 658-2043 to enhance your system with Superlok needle valves.

Offered in a wide range of pressure ratings, sizes, and end connections, these valves integrate cleanly into high-pressure piping systems, helping engineers dial in precise flow without compromise. They’re also a key component in hygienic valves and instrumentation setups that demand precise fluid control and corrosion-resistant alloys.

Needle valves from SuperlokUSA® are backed by fast delivery, clean in place instrumentation options, and North American inventory.

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Types of Superlok Needle Valves

SINV Needle Valves (3000 TO 5000 PSI)

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SBNV Needle Valves (6000 PSI)

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SHBNV High Pressure Bar Stock Needle Valves (10000 PSI)

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SUNV Union Bonnet Needle Valves (6000 PSI)

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Swagelok® needle valves by Superlok

Superlok’s precision-engineered stainless steel needle valves offer a powerful alternative to Swagelok®, delivering high-pressure performance, leak-tight reliability, and ease of installation in critical fluid and gas systems.

Manufactured from corrosion-resistant alloys, these needle valves are trusted across industries like oil and gas, chemical processing, pharmaceuticals, semiconductor manufacturing, and food and beverage. With clean threading, tight dimensional tolerances, and field-proven sealing integrity, Superlok needle valves are engineered for precise fluid control in even the harshest conditions.

Engineers also benefit from Superlok’s compatibility with clean in place instrumentation, allowing for safe disconnection, inspection, and reassembly without system contamination. SuperlokUSA backs every needle valve with fast nationwide shipping, a deep inventory of union and connector types, and responsive technical support.

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Swagelok® Alternate Parts Near

SuperlokUSA offers fully interchangeable alternatives to Swagelok® and Parker® needle valves, with the same form, fit, and function. Each Superlok needle valve is precision-machined to ASME B1.1 thread standards, ensuring consistent, leak-tight performance across all builds.

Every product is backed by the SGS intermix-ability and interchangeability burst-test certification, giving teams confidence to spec Superlok as a direct alternative without compromising system reliability or performance.

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Installation & Maintenance Best Practices

Superlok needle valves prioritize stem packing adjustment during setup to ensure precise flow throttling in high purity sanitary stainless steel instrumentation lines. Deburr ports with chamfer tools to 45° edges, achieving random roughness average (Ra) under 12 micro-inches for contaminant-free metering. Position valves in accessible gauge tees using panel mounts level within 0.4° to prevent stem binding and facilitate fine adjustments.
  • Connect via female NPT finger-tight then quarter-turn to 18 ft-lbs on 1/8-inch to 80 ft-lbs on 3/8-inch, using torque wrenches to verify packing compression without tip distortion in control circuits.
  • For high purity fluid processors, install with isolation unions and clean-in-place (CIP) adapters for 290°F solvent flushes that clear orifices below 0.005 micron without stem disassembly.
  • Anchor with set screws every 4 inches to dampen vibration, followed by flow testing at 1.5 times maximum allowable working pressure (MAWP) for 10 minutes to confirm no bypass leaks.
Flush with filtered process gas post-install for three volumes, monitoring Cv below 0.01 with calibrators. In sanitary applications, select soft-seated models for chemical compatibility, verifying no leakage via bubble tests under 0.001 scc/min. Semiannual inspections employ micrometers for tip wear below 0.0005 inches, checking packing for extrusion over 0.001 inches.
  • Service biannually in laminar flow hoods for stem inspection and repacking with low-outgassing compounds, followed by ultrasonic cleaning at 100°F and citric passivation to enhance resistance against chloride corrosion in corrosion-resistant alloys.
  • Re-lubricate stems post-380°F exposure, logging adjustment torques with digital gauges for accurate throttling optimization.
  • Document flush flows and Cv profiles in maintenance logs, linking to instrument ranges for predictive tip renewals in calibration protocols.
  • For hazardous instrumentation, integrate purged bonnets, confirming adjustment under 2 full turns to comply with NFPA 496 standards in analyzer panels.
These protocols boost valve precision to 30,000 adjustments, streamlining tuning in laboratories and semiconductor fabs. Recorded metrics cut calibration times by 25%. Packing and flushing emphasis guarantees contaminant-free control across applications.
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Quality & Standards Compliance

Superlok needle valves are machined from 316 stainless steel per ASTM A479, offering over 72 ksi tensile and ductility beyond 32% for endurance in fine-flow adjustments. Batches secure positive material identification (PMI) through X-ray fluorescence analysis, affirming molybdenum over 2.3% for pitting resistance equivalent numbers (PREN) above 23 in chlorinated media.
  • Orifice drilling matches ASME B16.11 specifications of ±0.0005 inches on diameter, verified by air plugs and coordinate measuring machines (CMMs) for Cv consistency within 4% to enable even throttling rates.
  • Packing integrity at 1.5 times rated working pressure (RWP) per API 598 utilizes clean dry air for retention below 10^-5 scc/sec, cycling 35,000 turns to emulate continuous duty without stem scoring.
  • Tip geometry per ISO 5167 guarantees conicity within 0.003 inches, with finite element analysis (FEA) predicting flows at 400 scfm for balanced needle dynamics.
Electropolishing achieves Ra 12 micro-inches, probed for 350-hour corrosion per ASTM G36 without crevice attack in moist process areas. Fabrication in ISO 14644 Class 7 zones caps ions below 15 ppm, tailored for high purity fluid processors.
  • Interchangeability with Swagelok®, Parker®, and Hy-Lok® affirmed by TUV cross-tests, enduring 1,800 psig without binding or leaks.
  • Rupture safety surpasses 4 times RWP, serialized via mill test reports (MTRs) with ultrasonic non-destructive testing (NDT) for inclusions under 0.0004 inches, compliant with ASME Section V.
  • Nitrogen suitability per ASTM G86 indicates no degradation at 2,500 psi, plus fatigue per ISO 8573 verifies no drift after 1,000 hours.
  • TUV external validations cover Cv mapping and eddy current NDT for thickness variance below 0.0006 inches, issuing certificates of compliance (CoCs) per ISO 9001:2015.
This system crafts valves for 15-year metering in analyzers and fume hoods, outpacing norms for precise flow barriers in fluid systems. Audit trails support FDA and SEMI reviews from stems to seats. Design accuracy spurs superior regulation.
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Frequently Asked Questions

What materials are they constructed from?
Superlok needle valves employ 316 stainless steel builds for robust corrosion resistance, per ASTM A479 with sulfur under 0.005% to minimize inclusions in reactive process fluids. PCTFE or Kel-F tips provide low-friction adjustment for precise control, while Inconel stems suit high-temperature oxidizers in furnace gas lines.
Superlok bodies rate to 6,000 psig ambient for 1/4-inch ports, derating to 3,000 psig at 400°F via ASME B31.3 curves for stable throttling under thermal stress. Ports sustain 4,000 psig non-shock, with Cv ranging from 0.001 to 0.1 for fine metering in laboratory and industrial applications.
Superlok valves conform to Swagelok®, Parker®, and Hy-Lok® norms, featuring JIC per ASME B18.3 and stem threads with matching pitch for drop-in instrumentation upgrades. This allows plug-and-play in retrofit setups without Cv variance, maintaining beta ratios above 500:1 in multi-vendor chromatography systems.
Assess nominal bore by inner diameter and required Cv, consulting Superlok charts for configurations that balance adjustment torque and flow range for optimal performance. For high purity fluid processors, pick micro-metering designs to hold flows under 1 sccm, ensuring effluent clarity below 0.01 NTU in analytical columns.
In-stock assemblies ship next-day from distribution centers, supporting just-in-time inventory for standard threads and tip materials in continuous labs. Bespoke Cv ranges or alloys take 2-4 weeks, expedited to 4-7 days via priority queue for urgent cleanroom instrument qualifications.
Affirmative, Ra 10 micro-inch electropolished internals ensure <0.5 particles per ml per ISO 14644 Class 6 for pharmaceutical injectables and etchant delivery. They endure 150+ autoclave cycles without compromise, with extractables below 5 ppb total organic carbon (TOC) for biocompatible flow control.
Keep in dry storage at 45-75°F with humidity <45%, apart from abrasives to shield needle tips from dulling during long-term hold. Nitrogen-purged bags with moisture indicators support multi-year readiness, with pre-use torque checks confirming smoothness below 5 in-lbs.
1/8-inch NPT connections require 18 ft-lbs snug torque, re-torqued post-flow to verify no bypass at 1.5x operating pressure for reliable seating. 3/8-inch sizes cap at 70 ft-lbs using torque multipliers, sidestepping thread damage in sanitary assemblies under vibration while achieving uniform packing compression.
Superlok valves withstand -250°F with V-notch toughness >35 ft-lbs for helium circuits in superconductivity labs per ASTM E399 validation. Low-temperature testing upholds Cv retention above 99%, with derates under -200°F preventing housing contraction issues in subcooled gas lines for consistent performance.

Industry Leaders Using Superlok

Needle valves are critical in industries where fine-tuned control, leak prevention, and reliable shutoff are non-negotiable. You’ll find Superlok needle valves in systems across oil and gas, chemical processing, pharmaceuticals, food and beverage, and semiconductor manufacturing industries that demand precise, responsive flow control under high pressure.

Built from 316 stainless steel and machined to exacting tolerances, Superlok needle valves provide excellent corrosion resistance, durability, and leak-proof performance, even in harsh or chemically aggressive environments. Their compact size minimizes footprint, while the robust internals are made for consistent, repeatable adjustments and safe shutdowns.

Whether you’re maintaining sterile processes in pharmaceuticals, handling instrumentation in refineries, or controlling ultra-precise flow in lab applications, Superlok needle valves deliver unmatched performance, reliability, and longevity making them the go-to solution for pressure systems, clean in place instrumentation, and precise fluid control across every sector.

Superlok Advantage

LARGEST INVENTORY OF NEEDLE VALVES THAT’S ALWAYS IN-STOCK

SuperlokUSA stocks one of the largest inventories of precision needle valves in the United States, ready for rapid shipment coast-to-coast. This ensures quick lead times, minimal downtime, and a critical edge over slower competitors. With Superlok's reputation for accessibility and fast response, businesses can rely on timely deliveries for everything from new installations to last-minute replacements. And because Superlok needle valves are made from 316 stainless steel and engineered for precise fluid control, SuperlokUSA remains the preferred partner for operations that demand corrosion-resistant alloys, leak-tight reliability, and consistent supply.

FAST DELIVERY ANYWHERE IN THE USA

SuperlokUSA’s national shipping advantage ensures your needle valves get where they need to go fast. Thanks to negotiated rates and fulfillment hubs across the U.S., Superlok needle valves ship out quickly and cost-effectively, helping customers avoid costly project delays.
Whether you’re working in chemical processing, clean in place instrumentation, or pressure systems, Superlok’s combination of delivery speed, inventory scale, and price transparency gives you what competitors can’t: peace of mind and product on hand.

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