Couplings & Clamps

Built to join the line.
Made to hold it.

Different demands. Different couplings. From daily vacuum to high-pressure holds.

6
Coupling Families
1.5" - 14"
Size Range
H-P Products coupling collection for pneumatic conveying and industrial vacuum systems
Overview

A coupling is the quietest part of the system. Until it's not.

Couplings are where a line lives or fails. Leaks, gasket wear, static buildup, product contamination, pressure drops, teardown time, weather exposure. H-P's coupling line is built to address each one, from grounding strips that manage static, to gasket options that match the material, to designs that hold under pressure without constant maintenance. INSTALOK for pellet conveying. Vac-Lite Core for everyday industrial vacuum. Compression and Eliminator where pressure holds the argument. Super Grip for teardown-heavy lines. Cam and Groove where the connection has to be quick and temporary.

Pneumatic Conveying & Industrial Vacuum Catalog
Every size. Every gasket option. Part numbers and configuration breakdowns.
Open Catalog (PDF)
The Line

Six couplings. Each built for a specific fight.

Pellet Conveying H-P Products INSTALOK coupling
01 — Pellet Conveying

INSTALOK™

30% quicker install. 20% less cost.

Built specifically for conveying plastic pellets and other non-sanitary vacuum applications. The integrated O-ring design eliminates the product contamination risk that deteriorating gasket material causes in traditional compression couplings.

Size Range
1.5" – 4"
Body
Galvanized Steel
O-Ring
Nitrile / Viton™
  • Fits both tube (1-1/2" to 4" OD) and pipe (2" to 3-1/2" NPS)
  • Grade 5 stress-relieved bolts with galvanized steel construction
  • O-rings available in Black Nitrile, White Nitrile, or Viton™
Request a Quote Install Guide
New H-P Products Vac-Lite Core coupling for industrial vacuum applications
02 — Everyday IVAC

Vac-Lite™ Core

Core performance. Everyday value.

A lightweight, cost-effective coupling built for industrial vacuum applications. Simple, durable, and engineered to hold a seal day after day without the bulk of heavier compression designs.

Size Range
2.125" – 6.625"
Body
430 Stainless
Gasket
Silicone (Std)
  • Grounding strip integrated into 430 stainless construction
  • Lightweight design for easier handling and installation
  • Dependable seal for day-to-day IVAC performance
Request a Quote Install Guide
Workhorse H-P Products compression coupling, zinc-plated steel for vacuum and pressure applications
03 — General Purpose

Compression Coupling

The workhorse. From 1.5" to 14".

Heavy-gauge, zinc-plated steel coupling built for vacuum and pressure applications across pneumatic conveying and industrial vacuum systems.

Size Range
1.5" – 14"
Body
Zinc-Plated Steel
Gaskets
6 Materials
  • Stainless steel grounding strips standard (eliminate static build-up)
  • Gasket protectors available to reduce gasket wear
  • Neoprene, Nitrile, Silicone, Red Rubber, EPDM, or Viton™
  • Stainless steel construction available on request
Request a Quote Install Guide
High Pressure H-P Products Eliminator coupling for high-pressure applications with metal-to-metal gripping bands
04 — High Pressure

Eliminator

When pressure holds the argument.

Built for higher-pressure applications and anywhere the joint can't move. Uses the compression coupling base with two additional bands that add metal-to-metal gripping.

Size Range
2" – 12.75"
Base
Compression
Grip
Metal-to-Metal
  • Available in 18" (3-bolt) and 20" (4-bolt) configurations
  • Conversion kits available to retrofit compression couplings
  • All gasket options from the compression line carry over
Request a Quote Ask About Retrofits
Bulk Transport H-P Products Super Grip coupling, 430 bright-annealed stainless steel for dry bulk transport
05 — Frequent Teardown

Super Grip

Bulk transport. Teardown. Wash-down.

Quick coupler designed for dry bulk transport tank tubing and lines that get torn down for periodic cleaning. 430 bright-annealed stainless holds up through repeated use, wash-down, and outdoor exposure.

Size Range
1.5" – 12.75"
Body
430 BA Stainless
Gasket
FDA Gum Rubber
  • Single or double clamp configurations for secure clamping
  • Holds through expansion, contraction, and vibration
  • FDA-approved gaskets standard for food applications
  • Stainless steel grounding strip standard
Request a Quote Ask a Question
Non-Permanent H-P Products aluminum Cam and Groove coupling for non-permanent hose-to-equipment connections
06 — Temporary Connections

Cam & Groove

Aluminum. Interchangeable. MIL-spec compliant.

Built for non-permanent connections where a hose has to come on and off — equipment hookups, temporary runs, and anywhere the joint is not meant to stay. Female couplers include a locking feature with optional safety clips.

Size Range
1.5" – 8"
Body
Aluminum
Spec
MIL A-A-59326
  • MIL Spec compliance allows brand interchangeability (all sizes except 5" & 8")
  • Safety clips lock handles to prevent disconnection during transfer
  • Brass security chains available
  • Stainless steel construction available on request
Request a Quote Ask a Question
At A Glance

Side by side.

A quick read on where each coupling fits.

INSTALOK™ Vac-Lite™ Core Compression Eliminator Super Grip Cam & Groove
Size Range 1.5" – 4" 2.125" – 6.625" 1.5" – 14" 2" – 12.75" 1.5" – 12.75" 1.5" – 8"
Material Galvanized Steel 430 Stainless Zinc-Plated Steel Zinc-Plated Steel 430 BA Stainless Aluminum
Standard Gasket Nitrile O-Ring Silicone Neoprene / Nitrile Neoprene / Nitrile FDA Gum Rubber Varies
Grounding Strip — Standard Standard Standard Standard —
Best For Pellet lines where install speed + contamination matter Everyday IVAC systems with frequent handling Mixed vacuum/pressure systems needing versatility High-pressure or movement-sensitive joints Lines requiring frequent teardown and wash-down Temporary hose-to-equipment connections
Complete spec tables and parts breakdowns are in the catalog PDF. Sizing questions? etbsales@h-pproducts.com.
FAQ

Common questions from the field.

INSTALOK is built specifically for pellet conveying. It installs in roughly half the time of a compression coupling and costs about 20% less. The integrated O-ring design also eliminates the gasket-deterioration contamination risk that can affect traditional couplings in pellet lines. Compression couplings are the broader workhorse, with a wider size range (up to 14") and the full gasket material library.
Super Grip is the standard choice. It ships with FDA-approved gum rubber gaskets and the Type 430 bright-annealed stainless construction holds up to wash-down and transport conditions. If you're running a specific food or pharma process and need to confirm the gasket, contact our sales team.
Yes. Conversion kits are available to upgrade a standard compression coupling into an Eliminator for higher-pressure or high-holding-power applications. You keep the base coupling and add the bands that deliver metal-to-metal grip.
Compression couplings come standard with Black Neoprene or White Nitrile Rubber, with Silicone, Red Rubber, EPDM, and Viton™ also available. INSTALOK O-rings come in Black Nitrile, White Nitrile, or Viton™. Vac-Lite Core ships with Silicone as standard. Super Grip uses FDA-approved gum rubber for food service.
Yes. Stainless steel compression couplings are available on request. Contact our sales team with your size and application details.
Match the coupling size to the outside diameter of the tube it joins, and confirm the pressure and temperature requirements of your application. The full catalog has size charts and gasket compatibility for each coupling family. For edge cases or higher-pressure applications, our team can spec it with you.