---
title: Design Envelope 4312 Twin Pumps
description: Armstrong’s Design Envelope 4312 is a pipe-mounted, two-pump unit with integrated intelligent controls for full redundancy during operation. Vertical in-line design eliminates the need for inertia bases, housekeeping pads and flex connectors, and reduces piping requirement.
---

[Armstrong In The Media Blog](https://blog.armstrongfluidtechnology.com)

# [Design Envelope 4312 Twin Pumps](https://blog.armstrongfluidtechnology.com/design-envelope-4312-twin-pumps)

 Written by [Armstrong Fluid Technology](https://blog.armstrongfluidtechnology.com/author/communication) | Nov 30, 2018 11:26:01 AM

As Seen on [hpac.com](https://www.hpac.com/galleries/new-green-hvac-products-november-2018/gallery?slide=3) - November 08, 2018

Armstrong’s Design Envelope 4312 is a pipe-mounted, two-pump unit with integrated intelligent controls for full redundancy during operation. Vertical in-line design eliminates the need for inertia bases, housekeeping pads and flex connectors, and reduces piping requirement. It saves up to 75 percent in energy over comparable traditional constant-speed or variable-frequency-operated pump installations. Reduces operational greenhouse gas emissions at an equal ratio. Integrated controls eliminate procurement, installation (including wiring), calibration and upkeep of differential pressure sensors. Power range is 1 horsepower to 40 horsepower (0.75 kW to 30 kW). Performance range is up to 1,250 gal. per minute (80 L/s) flow and 250 ft. (75 m) head. 

 

Also seen in:

[secure.viewer.zmags.com](https://secure.viewer.zmags.com/publication/20e37be6#/20e37be6/21) - November, 2018

[View full post](https://blog.armstrongfluidtechnology.com/design-envelope-4312-twin-pumps)

```json
{
  "@context" : "http://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "Armstrong Fluid Technology"
  },
  "dateModified" : "2018-11-30T11:41:01.365Z",
  "datePublished" : "2018-11-30T11:26:01Z",
  "headline" : "Design Envelope 4312 Twin Pumps",
  "image" : {
    "@type" : "ImageObject",
    "height" : 1050,
    "url" : "https://cdn2.hubspot.net/hubfs/1849131/Imported_Blog_Media/4312_TwinDE_30-30_BackUp_NoGuard_PPT.jpg",
    "width" : 1000
  },
  "mainEntityOfPage" : "https://blog.armstrongfluidtechnology.com/design-envelope-4312-twin-pumps",
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "height" : 60,
      "url" : "/hs/hsstatic/content_shared_assets/static-1.4092/img/default-amp-logo.png",
      "width" : 60
    },
    "name" : "Armstrong In The Media"
  }
}
```