Adjustable Stainless Steel Spigot #2205
Industrial-grade 2205 duplex stainless steel glass spigot, engineered to North American railing load standards and independently lab-tested to ISO 9227:2017 — 200 hours of neutral salt spray exposure with no visible corrosion. Built for residential, commercial, and marine-exposed installations from Vancouver to Miami.
Why duplex 2205 (and not 304 or 316)?
Most glass spigots on the market are made from 304 or 316 stainless. We use duplex 2205 — a high-performance alloy specifically engineered to outperform both in corrosive environments. The numbers tell the story:
- Pitting Resistance Equivalent (PREN) above 35 — versus ~25 for 316
- Yield strength 623 MPa — nearly 3× stronger than 304 (~210 MPa)
- 200 hours salt spray exposure with zero significant corrosion — the equivalent of years of coastal weathering
This is the same grade specified for offshore oil platforms, desalination plants, and waterfront architecture. It's not "marine-grade" as a marketing phrase — it's marine-grade as a metallurgical specification.
Key features
- Premium duplex 2205 stainless steel (Cr 22.7% / Ni 5.2% / Mo 3.18%)
- Independently lab-tested — ISO 9227:2017 salt spray, 200h, no visible corrosion
- Load-rated to 750 N/m vertical and horizontal — meets AS1170 and equivalent North American railing load requirements
- Compatible with 12mm toughened (tempered) glass
- Available in Brushed Satin and Matte Black finishes
- Matte Black powder coating passes ASTM 5B-4B cross-cut adhesion test
- Complete mounting kit included — no extra hardware to source
Technical specifications
| Material | Duplex Stainless Steel 2205 (UNS S32205 / EN 1.4462) |
| Total height | 158 mm (6.22 in) |
| Cross section | 41.5 × 41.5 mm |
| Base plate | 100 × 100 mm |
| Base mounting holes | 4 × M10, 53.6 mm diagonal pattern |
| Glass slot width | 17 mm (± 0.2 mm) |
| Glass clamping screws | 2 × M10, 50 mm apart (vertical) |
| Compatible glass thickness | 12 mm toughened (tempered) |
| Weight | 1.4 kg (3.1 lb) |
| Finishes | Brushed Satin, Matte Black |
| Standards & tests | ISO 9227:2017, ASTM D3359 (5B–4B), AS1170 load compliance |
Material composition (lab-verified)
Independent laboratory analysis by RELLAB Testing Services — Report No. WX220418-013. Every element measured within the strict UNS S32205 / EN 1.4462 specification window:
| Element | Required range | Measured |
|---|---|---|
| Chromium (Cr) | 22.0 – 23.0% | 22.715% |
| Nickel (Ni) | 4.5 – 6.5% | 5.208% |
| Molybdenum (Mo) | 2.5 – 3.5% | 3.182% |
| Nitrogen (N) | 0.08 – 0.20% | 0.102% |
| Carbon (C) | ≤ 0.030% | 0.022% |
| Manganese (Mn) | ≤ 2.00% | 1.101% |
| Silicon (Si) | ≤ 1.00% | 0.887% |
| Phosphorus (P) | ≤ 0.030% | 0.024% |
| Sulfur (S) | ≤ 0.020% | 0.002% |
Mechanical properties: Hardness 49–50 HRC · Tensile strength 825 MPa · Yield strength 623 MPa · Elongation 29%
Corrosion testing
Subjected to 200 continuous hours of neutral salt spray testing per ISO 9227:2017 — the international benchmark for marine-grade hardware certification.
- Test conditions: 35°C chamber temperature, 5% sodium chloride solution, pH 6.8
- Continuous exposure: 200 hours (verification samples photographed at 48h, 96h, 144h, 192h, 200h)
- Result: no significant change to the sample surface
For context, standard 304 stainless typically shows visible corrosion well before 200 hours in the same test. This level of resistance is what makes duplex 2205 the right choice for poolside, coastal, and high-humidity installations.
Load capacity
Independently load-tested using a 12mm toughened glass panel (1170 × 2000 mm) supported by two spigots at 1390 mm spacing:
Uniformly distributed vertical load
- 350 N/m applied (1050 N total): 0 mm permanent deflection
- 750 N/m applied (2250 N total): 0 mm permanent deflection
Uniformly distributed horizontal load
- 350 N/m applied (1050 N total): 3 mm permanent deflection
- 750 N/m applied (2250 N total): 16 mm permanent deflection (maximum allowable: 30 mm)
All tests passed within engineering tolerance, meeting AS1170 railing load standards and exceeding typical North American residential and commercial guardrail load requirements.
Applications
- Pool fencing and surrounds (residential and commercial)
- Glass deck and patio railings
- Balcony balustrades
- Outdoor stair handrails
- Marine and coastal installations
- Commercial entrance railings
- Mezzanine and interior guardrails
Suitable for both interior and exterior use across all North American climates — from indoor humidity-controlled spaces to direct coastal salt-air exposure.
What's included
- 1 × Adjustable Spigot #2205 (your selected finish)
- 4 × M10 base mounting bolts
- 2 × M10 glass clamping screws
- Pre-installed rubber gaskets for glass protection
- Allen keys (sized for provided hardware)
- Installation instructions
Installation & support
Designed for straightforward installation on concrete, structural metal sub-frame, or reinforced wood substrate. The adjustable plumb mechanism compensates for surface irregularities to achieve a true vertical line across multi-spigot runs.
For project-specific load calculations, custom finishes, or volume orders for contractor projects, contact our team at info@gvhardware.com or 514-295-3883.
Custom finishes for trade & contractor orders
Beyond our standard Brushed Satin and Matte Black finishes, this spigot is also produced in Mirror Polish, White, and Golden for volume orders and contractor projects. Contact our team for trade pricing and lead times.
Warranty
Lifetime warranty against corrosion on the 2205 stainless steel material — backed by independent ISO 9227:2017 lab testing showing no visible corrosion after 200 hours of accelerated salt spray exposure.
5-year warranty on powder-coated finishes (Matte Black). Coating passes ASTM D3359 5B-4B cross-cut adhesion test for long-term durability.
Warranty covers defects in materials and workmanship for the original purchaser. Does not cover damage from improper installation, accidental impact, or modifications.
Certifications & standards
- ISO 9227:2017 — Neutral Salt Spray Test (independent verification by RELLAB Testing Services, Report WX220418-013)
- ASTM D3359 — Cross-Cut Adhesion Test for powder-coated finishes (5B–4B rating)
- AS1170 — Australian Structural Design Action Standard for railing loads (equivalent to ICC/IBC commercial guardrail requirements)
- Material conforms to ASTM A240 / EN 1.4462 / UNS S32205
