Waukesha D4 / DA4 Double Seat Mixproof Valve

Name: Waukesha D4 / DA4 Double Seat Mixproof Valve
Brand: Waukesha Cherry-burrell (SPX Flow)

Waukesha D4 / DA4 Double Seat Mixproof Valve

The Waukesha D4 / DA4 Series Double Seat Mixproof Valves offer reliable separation of incompatible fluids in hygienic and sanitary processing — from dairy and beverage to food, brewing, and personal-care lines. A tiered model range and “All In” standard features deliver high value at a low life-cycle cost.

Shared seal kits across multiple size ranges (one kit covers 1.5″–3.0″) reduce inventory, while reduced CIP losses and low air consumption trim operating costs. Integrated shaft-seal flush eliminates external piping, long housing ports simplify manifold building, and a replacement insert lets operators upgrade existing installations without replacing the full valve.

Tiered model range — align spec and ROI with budget
“All In” standard features for exceptional value
One seal kit for 1.5″–3.0″ sizes — reduced inventory cost
Reduced CIP losses — lower running cost
Low air consumption and air supply requirements
Long housing ports ease manifold building
Integrated shaft seal flush — reduces need for external piping
Replacement insert available — upgrade existing installations

Hygienic double-seat mix-proof process valves for sanitary manifolds
Dairy
Food and beverage
Brewing
Pharmaceutical and personal care

PRODUCT MANUAL

Body / Port Sizes	OD tube 1.5"–6"; Schedule 5 pipe 2"–6"
Max Product Pressure	145 psi (10 bar)
Temperature Range	EPDM & HNBR: 275 °F (135 °C), short-time 284 °F (140 °C); FPM: 275 °F (135 °C), not for steam
Air Supply Pressure	73 psi (5 bar), normally closed
Body / Wetted Materials	316L (1.4404), 304 (1.4301)
Seal / Elastomer Materials	EPDM, FPM, HNBR
Surface Finish	Inside: Ra 32 µin (0.8 µm) electropolished; outside: glass-blasted satin
Certifications	All seals comply with FDA requirements