Sanitary / Hygienic Gear Pump (3-A / EHEDG)

A sanitary gear pump is an external or internal gear pump manufactured to hygienic design standards — all product-contact surfaces SS 316L Ra <0.8 µm electropolished, Tri-Clamp connections, self-draining geometry, dead-leg-free internal design, and mechanical seal rated for CIP (140°C) and SIP (121–135°C). Processing 0.1–500 m³/h at 1–500,000 cP, it transfers viscous food, dairy, pharmaceutical, and biotechnology fluids with full traceability, validated cleanability, and zero contamination risk — 3-A Standard 4-XX certified for dairy; EHEDG Doc. 35 certified for food and pharma.

What It Is

How It Works

What It Is

How It Works

Challenges

Solutions

Oversized CIP Flush Port + Gear-Pump Reverse Operation During CIP: CIP flush enters dedicated port; reverse gear rotation assists cleaning flow through gear chamber clearances.
EPDM / PTFE Mechanical Seal Rated 140°C CIP, 135°C SIP (API Plan 02): EPDM O-rings and PTFE seat rated for CIP/SIP — API Plan 02 (quench) maintains seal face temperature.
Post-Assembly Electropolishing of Complete Pump Interior (Ra <0.4 µm HPAPI): Complete assembled unit electropolished — achieves Ra <0.8 µm on all assembled wetted surfaces.
Static Riboflavin Spray Test + Dynamic CIP Conductivity Monitoring: Riboflavin test maps CIP coverage; inline conductivity sensor confirms detergent penetration and rinse completeness.
Full-Bore Self-Draining Geometry (3° Minimum Slope on All Internal Surfaces): Gear pump body machined with 3° minimum drain slope — no condensate trap points; full gravity drainage

Applications

Dairy: Milk, cream, yogurt, cheese curd, whey — CIP/SIP validated hygienic transfer; 3-A certified.
Food & Beverage: Liquid egg, fruit puree, sauce, dressing, beverage concentrate — EHEDG validated.
Pharmaceutical: Oral liquid, syrup, parenteral formulation, WFI-compatible — Ra <0.8 µm GMP; Ra <0.4 µm sterile.
Biotechnology: Cell culture media, fermentation broth, enzyme solution — ultra-gentle, validated cleanable.
Cosmetics: GMP cosmetic liquid filling — shampoo, conditioner, body lotion — hygienic validated transfer.

Models & Capacities

Type 1D — Sanitary / Hygienic Gear Pump (3-A / EHEDG): Models & Capacities
Model	Scale	Flow Rate [L/min]	Flow Rate [m³/h]	Gear Type	Speed [RPM]	Max Pressure [bar]	Max Viscosity [cP]	Surface Ra [µm]	Inlet/Outlet (Tri-Clamp)	CIP / SIP	Certification	Weight [kg]
SGP-LAB-016	Lab	0.1–5	0.006–0.3	External spur	20–500 VFD	10	500,000	<0.8	DN 10 TC	CIP+SIP 121°C	3-A / EHEDG	4
SGP-LAB-025	Lab	0.5–10	0.03–0.6	External spur	20–800 VFD	10	500,000	<0.8	DN 15 TC	CIP+SIP 121°C	3-A / EHEDG	7
SGP-PIL-040	Pilot	2–25	0.12–1.5	External spur	20–1,000 VFD	16	500,000	<0.8	DN 20 TC	CIP+SIP 121°C	3-A / EHEDG	14
SGP-PIL-063	Pilot	5–60	0.3–3.6	External spur	20–1,200 VFD	16	500,000	<0.8	DN 25 TC	CIP+SIP 121°C	3-A / EHEDG	25
SGP-P-100	Production	15–150	0.9–9	Ext. or helical	20–1,200 VFD	20	500,000	<0.8	DN 32 TC	CIP+SIP 121°C	3-A / EHEDG	45
SGP-P-125	Production	25–250	1.5–15	Ext. or helical	20–1,000 VFD	20	500,000	<0.8	DN 40 TC	CIP+SIP 135°C	3-A / EHEDG	70
SGP-P-160	Production	50–400	3–24	Ext. or helical	20–900 VFD	25	500,000	<0.8	DN 50 TC	CIP+SIP 135°C	3-A / EHEDG	110
SGP-P-200	Production	80–700	4.8–42	Ext. or helical	20–800 VFD	25	500,000	<0.8	DN 65 TC	CIP+SIP 135°C	3-A / EHEDG	175
SGP-LP-250	Large Prod	150–1,200	9–72	Ext. or helical	15–700 VFD	25	500,000	<0.8	DN 80 TC	CIP+SIP 135°C	3-A / EHEDG	280
SGP-LP-315	Large Prod	300–2,500	18–150	Ext. or helical	15–600 VFD	25	500,000	<0.8	DN 100 TC	CIP+SIP 135°C	3-A / EHEDG	450
SGP-LP-400	Large Prod	500–4,000	30–240	Ext. or helical	10–500 VFD	25	500,000	<0.8	DN 125 TC	CIP+SIP 135°C	3-A / EHEDG	720