H42X-16 Silent Check Valve Flange Vertical Fire Non Return Valve DN50-DN300

H42X16 Silent Vertical Check Valve Flange Fire Non Return Valve

Product Overview

H42X-16 silent check valve is vertical flange type. It is widely used in fire pipeline, water supply and drainage, central air conditioning, water pump outlet and industrial circulating water pipeline. It automatically opens and closes by medium pressure, preventing water backflow, eliminating water hammer impact and running silently.

Specification & Parameter

• Model: H42X-16

• Nominal Pressure: PN16 / 1.6Mpa

• Working Temperature: 0℃～80℃

• Applicable Medium: Clean water, fire water, domestic water

• Connection Type: Flange Connection

• Installation: Vertical Installation

• Caliber Size: DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 Full size in stock

Material

• Valve Body: Ductile Iron QT450, high pressure resistance, anti-crack and durable

• Disc: Stainless steel + rubber composite structure

• Seal: NBR Rubber, wear-resistant, aging-resistant, zero leakage

• Spring: Stainless steel spring, sensitive rebound, long service life

Features

✔ Silent operation, no impact and water hammer noise
✔ Soft seal design, tight sealing, no water leakage
✔ Sensitive opening and closing, stable pressure and anti-backflow
✔ Compliant with fire protection acceptance standard
✔ Easy flange installation, maintenance-free for long-term use

Application

Fire protection engineering, building water supply, municipal water pipe network, central air conditioning, industrial water circulation, water pump outlet anti-backflow system.