Key Features

  • Type: I-Style Anti Water Hammer Valve (AIF-D)
  • Sizes: DN80, DN100, DN125, DN150, DN200, DN250, DN300
  • Flange Standard: PN16 (optional JIS10K or ANSI 150lb)
  • Body Material: Ductile Iron
  • 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

Ductile Iron Anti Water Hammer Valve – AIF Series (PN16)

£305.24 incl. VAT £254.37 ex. VAT

-40% Was £508.73 incl. VAT

Brand: Z-Tide Co Ltd

Model: AIF-D

Read Full Description

Description

Heavy-duty flanged water hammer arrestor designed to absorb pressure surges and eliminate damaging shock waves in pipeline systems up to 12 Bar.


Key Features

Type: I-Style Anti Water Hammer Valve (AIF-D)
Sizes: DN80, DN100, DN125, DN150, DN200, DN250, DN300
Flange Standard: PN16 (optional JIS10K or ANSI 150lb)
Body Material: Ductile Iron
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: Ductile Iron
Diaphragm: NBR standard (EPDM optional)
Air Chamber: Pressurised sealed design
Temperature Range: -5°C to +80°C
Media: Water

Performance & Design

Instant Surge Absorption: Pressurised air chamber and flexible diaphragm eliminate response lag
No Sliding Pistons: No friction wear or mechanical sticking
No Air Loss: Sealed chamber prevents air bubble migration into pipeline
Stable Operation: Maintains consistent damping performance over long service life
Patent Protected: Patent No. 140580
Unlike traditional piston or spring-type surge arrestors, the AIF-D operates on a diaphragm air-cushion principle, providing rapid compensation for sudden pressure spikes caused by pump start/stop or fast-closing valves.

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-acting valve systems
Installing the AIF-D in-line significantly reduces shock waves, vibration, pipe stress and banging effects, protecting pumps, valves and pipework from long-term fatigue damage.

Applications

Pump stations
Water distribution systems
Irrigation systems
Industrial process water
Fire protection pipework
Municipal water infrastructure Related 

Related Products & Categories


Pressure Relief & Limiting Valves

Air & Vacuum Release Valves

Water Hammer Arrestors



Pressure Sustaining Valves

Safety Pressure Relief Valves

Z-Tide Manufacturing Product Range
View Technical Specification

Technical Specification

Brand: Z-Tide Co Ltd

Model: AIF-D

Width: 218.00 mm

Height: 188.00 mm

Depth: 218.00 mm

Weight: 18.00 kg

Body Material: Ductile Iron

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: 0.02 Bar (20 mBar), 0.1 Bar (100 mBar), 0.2 Bar (200 mBar), 0.3 Bar (300 mBar), 0.4 Bar (400 mBar), 0.5 Bar (500 mBar), 0.6 Bar (600 mbar), 0.7 Bar (700 mBar), 0.8 Bar (800 mBar), 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), Water

Options required: Anti Water Hammer

Orifice: 125mm, 150mm, 200mm, 250mm, 300mm, 80mm

Seals: EPDM, NBR

Found in these Categories

Chat with our technical team in seconds — real engineers, not chatbots. We’ll help with sizing, specs, compatibility and stock availability.

Typically replies in minutes · Mon–Fri 08:00–17:30