UL Listed & NSF Certified Wafer Type Butterfly Valves for Flanged Piping Systems

The Wafer Type Butterfly Valve, Hants Model HBF-300W, is a compact flow-control valve designed for fire protection systems, potable water applications, municipal water distribution, and industrial fluid networks.

This model series is available in multiple certified configurations for different project requirements, including UL-listed configurations for fire protection systems, NSF-certified configurations for drinking water applications under NSF/ANSI/CAN 61 and NSF/ANSI 372, and AWWA-compliant configurations for municipal waterworks systems.

Application of Hants wafer butterfly valve for potable water, fire protection, and underground waterworks

Applications of UL Wafer Type Butterfly Valve

Certified to meet strict health standards for municipal and commercial drinking water networks, ensuring lead-free and contaminant-free water delivery under AWWA specifications.
Fully listed and tested to handle high-pressure fire sprinkler networks, ensuring immediate readiness and structural integrity during emergency fire suppression.
The ultimate all-in-one solution for modern facilities utilizing shared piping networks for both domestic drinking water (NSF safe) and automatic fire protection systems (UL reliable).
Perfect for isolation plumbing and fluid control within water purification, desalination, reverse osmosis, and municipal waterworks facilities.
Designed to AWWA structural standards with an ultra-short face-to-face wafer layout, making it ideal for compact pumping rooms, limited-clearance pits, and dense pipeline manifolds where installation space is at a premium.

Key Features and Benefits of Wafer Butterfly Valve

Features dual certifications with UL listing and NSF certification, fully complying with stringent fire safety standards and potable water sanitation regulations to ensure ultimate system safety and compliance.
Designed for both efficient fire sprinkler networks and safe drinking water or industrial water systems, providing highly reliable, lightweight, and cost-effective fluid control.
Equipped with a high-visibility yellow indicator that allows operators to instantly and accurately verify the current open or closed position of the valve disc.
Includes an integrated electronic tamper switch that seamlessly connects with central control panels to trigger an immediate alarm if the valve is operated or moved unauthorizedly.
Features a precision compact wafer design conforming to ISO 5211 and API 598 standards, facilitating easy installation between flanges and reducing maintenance downtime.

Signal switch wiring diagram — Signal Switch Wiring Diagram

Installation Guide for Wafer Butterfly Valve

Set auxiliary screw at proper place, to regulate distance between two flanges or groove faces.
Insert the valve and screw on the rest bolts, align inner circles on the pipeline, make sure valve center and flange center are concentric and disc switch position are not blocked by flange inner diameter or near parts, then repeatedly tighten bolts at uniform diagonal.
After finishing installation, once again make sure full open and full open angle.

Why Choose the Hants UL Listed Wafer Butterfly Valve for Fire Protection Flow Control?

UL Listed (USA): Certified for use in fire protection systems, ensuring safe and reliable operation.
Flanged Wafer Design: Securely held between flanges using nuts and bolts for stable installation.
System Shutdown Requirement: Ensures safe installation or removal by draining the system first.

Frequently Asked Questions(FAQ) about Wafer Butterfly Valve

Q1: Why choose a wafer-type butterfly valve for compact piping installations?

Compared with bulkier valve body designs, its wafer-type structure helps reduce face-to-face installation space, piping weight, and maintenance complexity, making the HBF-300W well suited for projects that require compact installation, certified performance, and reliable water flow control.

Q2: What are the engineering advantages of using a single wafer butterfly valve that has both UL listing and NSF/AWWA certification?

Incorporating a single valve that features both UL listing and NSF/AWWA certification allows a single high-performance flow control solution to span multiple municipal and commercial pipeline applications. In modern building designs where fire protection mains and domestic drinking water loops share the same intake infrastructure, this multi-certified option provides unparalleled versatility. It eliminates the need to source, install, and track separate components, ensuring full compliance with both public health codes and fire safety regulations with one multi-purpose valve profile.

Q3: How does a dual UL and NSF certified valve maintain reliable sealing across diverse, high-demand fluid applications?

Versatility across diverse applications is achieved through high-specification materials required by both fire safety and drinking water mandates. The combination of a precision-machined stainless steel disc and a high-grade vulcanized elastomer seat ensures bi-directional, bubble-tight sealing. It safely withstands high-pressure fire line surges under UL criteria while remaining completely lead-free and chemically inert under NSF standards, ensuring reliable zero-leakage isolation across potable water, industrial processing, and emergency water supply systems alike.