L Style Water Hammer Arrestor – ALF-S 304 Stainless Steel (JIS10K)

Description

Heavy-duty L-pattern stainless steel anti water hammer valve designed for corner pipe installations requiring higher pressure capability and corrosion resistance.

Key Features

→ Type: L-Style Anti Water Hammer Valve (ALF-S)
→ Sizes: DN50, DN65, DN80, DN100, DN125, DN150, DN200
→ Flange Standard: JIS10K
→ Body Material: 304 Stainless Steel
→ Working Pressure: 0–20 Bar
→ Test Pressure: 35 Bar
→ Air Chamber Volume: 1,490cc to 27,230cc (size dependent)
→ Pre-Charge Pressure: 2.5 Bar (adjustable via Schrader valve)
→ Pressure Gauge: Included
→ Mounting Position: Any position

Materials & Construction

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

The stainless steel body provides superior corrosion resistance and extended service life in aggressive water conditions, coastal installations and industrial environments.

Performance & Design

→ Corner Installation Design: Ideal for installation directly at 90° pipe bends
→ Dual Absorption Effect: Flow-directing internal mechanism stabilises pressure and dampens surge waves
→ Instant Response: Pressurised air chamber with flexible diaphragm eliminates lag
→ No Sliding Pistons: No friction wear or mechanical sticking
→ Higher Pressure Capability: Rated up to 20 Bar working pressure
→ Patent Protected: Patent No. 140580

Unlike traditional inline surge arrestors, the ALF-S integrates water hammer protection directly at the pipeline corner, reducing installation complexity while providing rapid surge damping.

Where Water Hammer Occurs

Water hammer commonly develops:

• Downstream of check (non-return) valves
• At pipeline direction changes
• In long horizontal runs (>50 metres)
• During pump start-up or shutdown

Installing the ALF-S significantly reduces pressure spikes, vibration, pipe stress and damaging shock waves caused by sudden changes in water flow.

Applications

✔ Food production water systems
✔ Pump stations
✔ Industrial process water
✔ Irrigation systems
✔ Coastal and corrosive environments
✔ Higher pressure installations

Technical Specification

Brand: Z-Tide Co Ltd

Model: ALF-S

Width: 210.00 mm

Height: 230.00 mm

Depth: 210.00 mm

Weight: 17.00 kg

Body Material: Stainless Steel

Port Size: 4 inch Flange DN100 , 5 inch Flange DN125 , 6 inch Flange DN150 , 8 inch Flange DN200 , 2 inch Flange DN50, 21/2 inch Flange DN65 , 3 inch Flange DN80

Pressure: 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, 13 Bar, 14 Bar, 15 Bar, 16 Bar, 17 Bar, 18 Bar, 20 Bar

Seals: NBR

Media: Fluid (Non Aggressive), Fluid (Slight Acid/Alkali), Water, Water (RO/Pure/Demin)

Options required: Anti Water Hammer

Orifice: 125mm, 150mm, 200mm, 50mm, 65mm, 80mm