920 74th Street
Byron Center, MI 49315 US

Inglass U.S.A.


A Message from HRSflow

Company Profile

HRSflow, a division of INglass S.p.A., is a global company that designs and manufactures hot runner systems for all markets in plastic injection molding.

Your reliable partner for all your challenging applications

HRSflow designs and manufactures innovative hot runner systems for the injection molding industry which are used for demanding applications in the automotive, domestic appliances, technical applications, houseware, logistics & environmental segments.

FLEXflow Family: The Electrical Future You Would Never Have Expected

The electrical world at a glance: simple, safe and clean The future has arrived and it is electric.

As Seen In MoldMaking Technology

automotive mold

How to Better Balance Family Molds
A servo-driven valve gate can provide superior processing for family molds with significant variances in part sizes and volumes.

2018 Technology Review and Sourcing Guide: Hot Runners
MoldMaking Technology’s annual Technology Review and Sourcing Guide is an accurate, comprehensive, easy-to-read and easy-to-use use guide for researching today’s technology, equipment, products and services. The year’s latest moldmaking product developments within mold engineering/design, build and maintenance/repair are broken down into 10 sections, including hot runners.

Servo-Driven Valve-Gate System Increases Flexibility of Flow Control
HRSflow features Flexflow and Flexflow One at NPE2018. The company also has its technology featured in several exhibitor booths.

HRS Flow Opens New Facilities in Mexico and Thailand
HRS Flow has opened two new facilities to help support customers regionally in Queretaro, Mexico, and Bangkok, Thailand.

HEM Miniature Hydraulics

Technology Showcase, Hot Runners and Mold Components
Take a look at this week's slideshow to see products that make building and/or maintaining molds more efficient and cost-effective.

Valve Gate System Controls Pressure and Flow Rate
INglass’ HRSFlow brand offers the FlexFlow servo-driven valve gate, designed for accurate and repeatable control of pressures and flow rates for sequential molding applications.

valve gate system

Improving Sequential Molding
For large injection-molded parts, a servo-driven valve gate system can improve surface finish and part performance.

Proving the Advantages of a Servo-Driven Valve Gate System
One innovation for improving sequential injection molding centers around the use of servomotor technology.New servo-driven valve gate systems incorporate a toggle-type mechanism that operates the valve pin position at 90 degrees from the servomotor stroke.

emerald hot runner

Slideshow: Hot Runner Technology
Check out a few of the latest products in hot runner technology.

HRSFlow Multitech hot runner system

Hot Runner Systems Designed for Fast Cycle Times and High Production Volumes
The Multitech line from INglass’ HRSFlow brand offers hot runners designed for fast cycle times and high production volumes, making them well-suited for injection molding of packaging, caps and closures, and products for the medical, electronics and automotive industries.

HRSflow Opens Ultra-Modern Hot-Runner Plant in Michigan
Italian hot-runner firm establishes first North American production, focused on automotive.

HRSflow Opens U.S. Production Plant
The Michigan facility is the company’s first production plant in the United States and will support markets throughout the Americas.

Valve Gate Offers Flexible Molding Control
INglass’ HRSFlow hot runner division will display Flexflow, a servo-driven valve gate designed for accurate and flexible control of pressures and flow rates during injection molding.

HRSflow Opens Production Plant in Michigan
INglass-HRSflow reports that in the first half of 2015 it will open a new production plant in Michigan for the manufacture of hot runner systems for the American market.

thermal analysis of 32 drop system

Energy Savings in Multi-Cavity Molds
Simplifying maintenance and energy savings in the development of hot runner systems for multi-cavity molds for medical applications.

Product Categories of HRSflow

Hot Halves
Hydraulic Valve Gate Nozzles
Pneumatic Valve Gate Nozzles
Servo Valve Gate Nozzles
Temperature Controls, Monitors, Sensors
Thermal Hot Tip Nozzles
Valve Gate Controllers
Valve Gate Sequencers