Full Flow Silent Check Valve – CHF Series (PN16)

Description

Heavy-duty full open silent non-return valve designed to prevent backflow and eliminate water hammer in pump and pipeline systems.

Key Features

→ Function: Silent non-return (check) valve with anti-water hammer design
→ Sizes: DN50, DN65, DN80, DN100, DN125, DN150, DN200
→ Flange Standard: PN16 (optional JIS10K or ANSI 150lb)
→ Working Pressure: Up to 20 Bar
→ Test Pressure: 33 Bar
→ Body Material: Ductile Iron or 304 Stainless Steel
→ Temperature Range: -15°C to +80°C
→ Installation: Vertical or horizontal

Performance & Flow Design

→ Full Open Flow Design: Water flow does not directly lift against the gate, reducing restriction and pressure loss
→ Silent Closing Action: Spring-assisted plug prevents reverse flow shock and pump damage
→ Heavy-Duty Convex Plug: Automatically locates and seals under all pressure conditions
→ Cantilever Hung Plug: Ensures stable operation and long service life
→ Anti Water Hammer Performance: Reduces noise and impact during pump shutdown

Unlike traditional swing check valves, the CHF silent check closes rapidly before reverse flow accelerates, preventing damaging pressure spikes and mechanical shock.

Sealing & Construction

→ Seal Type: NBR U-Ring for tight soft sealing
→ Spring: Stainless steel
→ Plug / Seat / Retainer Materials: Brass or Stainless Steel (matched to body material)
→ Bypass Valve: Brass or Stainless (DN50–DN150 only)
→ Pin & Internal Components: Brass or Stainless Steel

The unique U-ring sealing design provides excellent tightness across low and high pressure conditions while maintaining long-term durability.

Applications

✔ Pump discharge lines
✔ Water distribution systems
✔ Irrigation systems
✔ Industrial water pipelines
✔ Municipal infrastructure

Technical Specification

Brand: Z-Tide Co Ltd

Model: CHF

Width: 122.00 mm

Height: 183.00 mm

Depth: 122.00 mm

Weight: 9.00 kg

Valve / Product Type: Check Valve

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 , 2 inch Flange DN50, 21/2 inch Flange DN65 , 3 inch Flange DN80

Operation: Pressure Assisted

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

Seals: NBR

Media: Fluid (Non Aggressive), Oils + Fuels 50cSt Max, Water

Orifice: 125mm, 150mm, 200mm, 250mm, 300mm, 50mm, 65mm, 80mm

Body Material: Ductile Iron, Stainless Steel

Options required: Anti Water Hammer, Manual Override