Spetec Pur F400 ~repack~ | Updated · 2024 |

Injecting behind walls to create an external waterproofing membrane. Technical Specifications at a Glance Appearance (Uncured) White Liquid Viscosity (at 25°C) ±340–350 cP Tensile Strength 290 psi (20 bar) Elongation at Break Density (Cured) 1.03–1.067 kg/dm³ Flash Point >302°F (>150°C) Installation and Best Practices

Using a single-component airless sprayer or hand pump, the resin is forced into the crack at pressures up to 100 bars.

| Pros | Cons | |------|------| | Outstanding mix ratio precision | High initial investment (€25k–40k) | | Handles high-viscosity & filled resins | Steep learning curve for optimal purge settings | | Vacuum degassing integrated | Replacement parts are costly | | Low waste during material change | Not ideal for very low volume (<100 mL/day) | | Robust for 24/7 industrial use | Requires clean, dry compressed air (6–8 bar) | spetec pur f400

By varying the percentage of Alchatek Gen Cat (accelerator), contractors can fine-tune the set time from a few minutes down to seconds, allowing for precise control in both slow seeps and high-pressure leaks.

Spetec PUR F400 is a solvent- and phthalate-free, water-reactive polyurethane resin. Unlike hydrophilic resins that absorb water, F400 is , meaning it uses water as a catalyst to react and expand but does not continue to absorb it once cured. Injecting behind walls to create an external waterproofing

It is NSF/ANSI/CAN 61 certified , making it safe for contact with potable drinking water in treatment plants and reservoirs.

Since the resin is water-reactive, moisture must be present. If the crack is dry, a small amount of water should be injected first to trigger the reaction. SPETEC® PUR F400 | Alchatek Spetec PUR F400 is a solvent- and phthalate-free,

Used for water cut-off in diaphragm walls, sheet piling, and secant piles.

| System | Accuracy | Viscosity Limit | Price (approx.) | |--------|----------|----------------|------------------| | | ±1% | 100,000 mPas | €30k | | Scheugenpflug Dos HP | ±1.5% | 80,000 mPas | €35k | | Graco PD44 | ±2% | 50,000 mPas | €18k | | ViscoTec 2K-Dispenser | ±0.5% | 500,000 mPas | €45k |