The HS Series is designed for the most rigorous food, beverage, personal care, and pharma applications, with 3-A compliant designs, hygienic materials, and smooth, easy-to-clean flow paths that reduce harborage areas for bacteria.

Graco SaniForce HS Diaphragm Pump
Key Features
- Easy to clean and sanitize, for high care applications
- Fewest gaskets and clamps for improved flushing
- Fewer areas for food and bacteria to hide for increased sanitation and easier cleaning
- Three-way pilot valve for non-stick operation
- Externally serviceable air valve for quick, inexpensive repairs
- 316L SST construction
- 32 Ra formed/welded stainless steel with sanitary finish
- Single piece manifold reduces clamps and areas for food and bacteria to hide
- Over molded and bolt in diaphragm options available
- Leak detection available
- Optimized fluid path improves cleanability and sanitation


How It Works
Graco SaniForce HS Series pumps are engineered for the most demanding sanitary applications, using a hydraulically balanced, double diaphragm design that ensures smooth, consistent, and contamination-free product transfer. Unlike standard AODD pumps driven directly by compressed air, HS Series pumps use a regulated air signal to operate a hydraulic pressure chamber, delivering exceptionally steady flow and higher discharge pressures without pulsation.
A few key performance advantages:
Hydraulic Balance for Smoother Flow
The HS design maintains equal pressure across both diaphragms, dramatically reducing pulsing compared to traditional AODD pumps. This results in steadier product transfer and improved accuracy for downstream equipment like fillers or depositors.
Superior Cleanability & Sanitary Design
Engineered for high-sanitation environments, the HS Series uses polished stainless-steel components, FDA-compliant fluid paths, and a drainable, CIP-friendly layout. Its minimal-crevice design reduces traps where product could stagnate, helping processors maintain strict hygiene standards.
High Pressure & Viscous Product Capability
Because the diaphragms are hydraulically driven rather than directly air-pressurized, HS pumps can achieve higher pressures and handle heavy, viscous products — including thick sauces, nut butters, purees, creams, and concentrates — without sacrificing flow stability.
Long Diaphragm Life & Reduced Downtime
The balanced hydraulic actuation minimizes diaphragm stress, extending service life and lowering maintenance frequency. Tool-free access to wetted parts further simplifies inspection and cleaning.
Safe, Low-Shear Operation
With no rotating components and a gentle pumping motion, SaniForce HS pumps protect shear-sensitive ingredients and reduce damage to particulates or delicate food products.
By combining hydraulic diaphragm control, hygienic construction, and low-shear operation, the Graco SaniForce HS Series sets a higher standard for sanitary product transfer in food, beverage, dairy, and personal care applications.
Reliable Resources, Dependable Results
Graco Saniforce High Sanitation Overview
This video provides a quick overview of the Graco SaniForce High Sanitation diaphragm pump and how its hygienic design supports reliable, gentle fluid transfer in sanitary applications.
Frequently Asked Questions
SaniForce HS pumps are built with fewer tri-clamps and gaskets in the fluid path, making them faster to disassemble, sanitize, and reassemble, reducing maintenance time and cleaning complexity.



