HQ41X Spherical Check Valve

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HQ41X Spherical Check Valve

HQ41X Spherical Check Valve

The HQ41X Spherical Check Valve is a swing-type check valve featuring a spherical disc design that provides superior sealing performance and reliable backflow prevention.

Performance and characteristics:

Product Overview

The HQ41X Spherical Check Valve is a swing-type check valve featuring a spherical disc design that provides superior sealing performance and reliable backflow prevention. Its unique spherical disc movement ensures quick response and minimal pressure drop, making it ideal for water and wastewater applications.

Key Features

Spherical Disc Design– Ensures tight sealing and smooth operation
Quick Response– Immediate closure prevents backflow effectively
Low Pressure Drop– Full flow design minimizes energy loss
Bubble-Tight Seal– Resilient seat prevents leakage
Corrosion Resistance– Stainless steel components
Compact Structure– Saves installation space
Maintenance-Free– Durable construction for long service life

Technical Specifications

Parameter	Specification
Size Range	DN50～DN600 (2″～24″)
Pressure Rating	PN10～PN16 (Class 150)
Temperature Range	0℃～80℃ (standard), -20℃～120℃ (extended)
Cracking Pressure	0.01～0.05MPa
Flow Direction	Horizontal or vertical (flow upward)
Connection Types	Flanged, Wafer, Lug
Body Material	Ductile Iron (GGG50), Cast Steel (WCB),Stainless Steel (304/316)
Disc Material	Stainless Steel with EPDM/NBR coating
Seat Material	EPDM, NBR, FKM (Viton)
Test Standards	ISO 5208, EN 12266, API 598

Working Principle

The HQ41X valve operates through a spherical disc that swings open with forward flow and closes by gravity and flow reversal. The spherical movement of the disc ensures smooth operation and tight sealing against the resilient seat when closed. The disc’s center of gravity design enables quick response to flow changes, preventing backflow effectively.

Structural Features