Stainless Steel Anti Water Hammer Valve – AIF Series (PN16)

Description

Heavy-duty 304 stainless steel water hammer arrestor designed to absorb pressure surges and protect pipeline systems from damaging shock waves in water applications up to 12 Bar.

Key Features

→ Type: I-Style Anti Water Hammer Valve (AIF)
→ Sizes: DN80, DN100, DN125, DN150, DN200, DN250, DN300
→ Flange Standard: PN16 (optional JIS10K or ANSI 150lb)
→ Body Material: 304 Stainless Steel
→ Working Pressure: 0–12 Bar
→ Test Pressure: 32 Bar
→ Air Chamber Volume: 2,465cc to 67,860cc (size dependent)
→ Pre-Charge Pressure: 2.5 Bar (adjustable via Schrader valve)
→ Pressure Gauge: Included
→ Mounting Position: Vertical, horizontal or inverted

Materials & Construction

→ Body: 304 Stainless Steel
→ Diaphragm: NBR standard (EPDM optional)
→ Air Chamber: Sealed pressurised design
→ Temperature Range: -5°C to +80°C
→ Media: Water

The stainless steel construction provides improved corrosion resistance compared to ductile iron models, making this version suitable for aggressive water conditions, coastal environments and hygienic installations.

Performance & Design

→ Instant Surge Absorption: Flexible diaphragm backed by pressurised air chamber eliminates response lag
→ No Sliding Pistons: No friction wear or mechanical sticking
→ No Air Bubble Migration: Sealed chamber prevents air loss into pipeline
→ Long Service Life: Stable damping performance without internal wear components
→ Patent Protected: Patent No. 140580

Unlike spring or piston-type surge arrestors, the AIF stainless model operates on a diaphragm air-cushion principle, delivering rapid and consistent compensation for sudden pressure spikes.

Where Water Hammer Occurs

Water hammer commonly develops:

• Downstream of check (non-return) valves
• In horizontal pipelines exceeding 50 metres
• During pump start-up or sudden shutdown
• In fast-closing valve systems

Installing the AIF stainless steel series in-line significantly reduces shock waves, vibration, pipe stress and the damaging banging effects caused by sudden changes in water velocity.

Applications

✔ Foos production water systems
✔ Pump stations
✔ Industrial process water
✔ Irrigation networks
✔ Fire protection systems
✔ Coastal or corrosive environments

Technical Specification

Brand: Z-Tide Co Ltd

Model: AIF-304

Width: 218.00 mm

Height: 188.00 mm

Depth: 218.00 mm

Weight: 18.00 kg

Body Material: Stainless Steel

Port Size: 4 inch Flange DN100 , 5 inch Flange DN125 , 6 inch Flange DN150 , 8 inch Flange DN200 , 10 inch Flange DN250, 12 inch Flange DN300 , 3 inch Flange DN80

Pressure: 1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar, 12 Bar

Media: Fluid (Non Aggressive), Oils + Fuels 50cSt Max, Water, Water (RO/Pure/Demin)

Seals: EPDM, NBR