Membrane Solutions Gravity Water Filter System offers dependable filtration in a compact, easy-to-use design. Ideal for kitchens, cabins, or outdoor adventures, it delivers consistent performance. Order yours today and enjoy practical water management anywhere.
Pre-order
Membrane Solutions 6L Gravity Straw Water Filter Purification Systems
Sale price$39.99 USD
Pre-order
10% OffPre-order
Pre-order
Membrane Solutions U3 2.25-Gallon Stainless Steel Gravity Water Filter
Sale price$169.99 USD
Pre-order
Membrane Solutions U3P 2.25-Gallons Stainless Steel Gravity Water Filter
Sale price$199.99 USD
SimPure Best Selling Products
$120 OffTop
SimPure Y9A 300GPD 6-Stage Alkaline Countertop RO System with Remineralization
Sale price$439.99 USD
$80 OffTop
SimPure T1-400ALK 8 Stage 400GPD Under Sink Tankless RO System with Remineralization
Sale price$349.99 USD
10% OffTop
SimPure T1 5-Stage Under Sink RO Water Filter Filtration System No Electricity Required
Sale price$159.99 USD
$90 OffTop
$100 OffNew
SimPure Y11C 6-Stage Cold Countertop RO System with CTO Filter, Reducing TDS
Sale price$499.99 USD
$90 OffTop
10% OffTop
$120 OffTop
SimPure Y9A 300GPD 6-Stage Alkaline Countertop RO System with Remineralization
Sale price$439.99 USD
$80 OffTop
SimPure T1-400ALK 8 Stage 400GPD Under Sink Tankless RO System with Remineralization
Sale price$349.99 USD
10% OffTop
SimPure T1 5-Stage Under Sink RO Water Filter Filtration System No Electricity Required
Sale price$159.99 USD
HELP CENTER
Frequently Asked Questions
Find quick answers about product selection, compatibility, installation, use and maintenance.
Product Guidance
Choose the right option for your needs.
Simple Answers
Clear guidance without unnecessary complexity.
Expert Support
Still unsure? Our team is here to help.
NEED MORE HELP?
Talk with a SimPure expert
Contact an Expert
A gravity filtration system places untreated water above the filter and uses gravity to move it through the filtration media without continuous pumping or squeezing.
Yes. Their larger water bags and hands-free operation can make gravity systems more convenient than individual filter straws when several people need filtered water at camp.
Smaller systems are lighter and easier to pack for individuals, while larger-capacity bags are more convenient for groups, base camps, or emergency water preparation.
Many outdoor gravity filters are designed to reduce selected microorganisms, but performance depends on membrane pore size, construction, and the exact model's tested claims.
Not necessarily. Many portable gravity microfilters are not designed to reliably remove viruses, so higher-risk water sources may require additional purification or disinfection.
Slow flow can result from sediment clogging the filter, insufficient height difference between the dirty-water bag and outlet, trapped air, or a filter that needs cleaning.
Start with relatively clear source water, position the dirty-water bag higher than the clean-water outlet, keep tubing free of kinks, and clean or flush the filter according to its instructions.