Silent Check Valve

PN10/PN16/125LB/150LB
2”~12” (50~300mm)
Cast Iron, Ductile Iron

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Non-Slam · Globe Type · Low Pressure Loss · BS 5153

Silent Check Valves for Water Hammer-Free Pipeline Protection

PN10/PN16, Class 125LB/150LB, sizes 2″ to 12″ (DN50~300mm), cast iron GG25 and ductile iron GGG50 per BS 5153 and MSS SP-71 — short face-to-face, metal sealing, maintenance free.

Overview

Silent check valve is also called globe type check valve or nozzle check valve, which can close without water hammer. Silent check valves are designed to react to the high deceleration rates by closing very quickly, prior to the reverse velocity reaching damaging levels. Globe type check valve is used widely in where forward flow can turn into reverse flow quickly. Flowspec Luokai design and manufacture the silent check valve according to BS5153 and MSS SP-71 with sizes of 2″ ~ 12″ (DN50~300mm). Just feel free to contact us now to get best prices. 30 years of experience. High quality. Big stock. Fast delivery.

1. Features

  • Non-slam closure
  • Low pressure loss
  • Friction-free valve disc guiding
  • Very short face-to-face length
  • Metal sealing
  • Low weight
  • Maintenance free

2. Technical Specifications

  • PN10 / PN16 / Class 125LB / Class 150LB
  • Size: 2″ ~ 12″ (DN50~300mm)
  • Materials: cast iron (GG25, ASTM A126 B), ductile iron (GGG50, GJS500, DIN1693, BS EN1563, ASTM A536 65-45-12)
  • Working pressure: 10bar, 16bar, 200psi
  • Applicable medium: water, sewage, waste water
  • Applicable temperature: -10℃~+80℃

3. Standards

  • Design & manufacturing: BS5153, MSS SP-71
  • Face to face: EN558-1
  • Flanged ends: EN1092-2, ASME B16.1/B16.42, AS4087
  • Inspection & testing: API598 / EN12266

4. Applications

  • Water supply plant
  • High building industry
  • Mining, steel industry
  • Metallurgy plant, power plant
  • Oil, chemical industry
  • Textile, pharmaceutical industry
  • Waste water, sewage treatment industry
  • Food, pharmaceutical industry
  • Fire fighting industry

Why Choose Flowspec Luokai

45+ Years Experience

Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.

Global Certifications

ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.

OEM Custom Solutions

Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.

Worldwide Delivery

Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.

Our Service Promise

Strict Quality Control

Every valve tested to API 598, EN 12266 before shipment

Timely Global Delivery

Reliable logistics to 5 continents with secure packaging

OEM & Custom Design

Tailored material, size, pressure and actuation to your specs

Dedicated After-Sales

Technical support and service throughout product lifecycle

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