please can someone tell me how the valves work on top. do i need to lift them up? push them down? or how does it work as no instructions in the box.

I'm the same, there is no explanation as to whether you are supposed to do anything with the two little valves. In fact they don't move much at all, so I presumed there was nothing to do with them. If there is something you are supposed to do to the valves, it would be nice if there were some guidelines or instructions!

Very tight stubborn lid that won’t budge even with jar opening tools and the lids are plastic, any suggestions?

Have you tried removing the valve, sometimes helps a bit like punching a hole in a tight jam jar lid to release the vacuum. I eventually got rid of my jars because I couldn't grip the lids and the valves stopped working.

Can the lid go in the dishwasher?

I’ve put the lid on the top shelf of the dishwasher without any problems

Do you need a fermentation weight hor this product. I want to ferment cherry tomatoes

Great jars, if you haven’t got weights and the ingredients need to be kept under fluid, some people say use a heavy pebble, wrap it in plastic, works a treat ! Only used mine for kefir so far, about to do sauerkraut, so I’ll use anything small enough to get into the jar that’s heavy ! Probably better to buy the weights for the job !

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HEFTMAN Fermenting Jars

Product ID: 331720874

Details

Brand
HEFTMAN
Capacity
1.4 litres
Colour
Red
Material
Glass
Material feature
Durable Safe

💨one-way automatic gas valve

🔒airtight silicone seal

🧪1.4L premium glass capacity

520533Fr

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Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🍶 Elevate your gut game with HEFTMAN’s smart fermenting jars!

SEAL THE FRESHNESS - Airtight silicone lid locks out oxygen and contaminants, keeping your probiotics pure.
FRIDGE ROOM READY - Compact 1.4L size fits perfectly in your fridge or countertop for versatile fermenting.
EASY CLEAN EASY LIFE - Dishwasher safe and simple to hand wash, designed for your busy lifestyle.
EFFORTLESS GAS RELEASE - Innovative one-way valve vents fermentation gases automatically—no cloths, no mess.
CRYSTAL CLEAR DURABILITY - Sturdy, non-porous glass built to last and resist stains for flawless fermentation.

The HEFTMAN Fermenting Jar 2-pack features durable 1.4L glass containers with airtight silicone seals and a unique one-way valve that automatically releases fermentation gases. Perfect for kefir, sauerkraut, and sourdough starters, these jars combine convenience with food-safe design, fitting easily in your fridge or countertop while ensuring contamination-free, mess-free fermentation.

Specifications

ASIN	B091HRSKD5
Best Sellers Rank	14,816 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 4 in Fermenters
Brand	HEFTMAN
Capacity	1.4 litres
Closure Type	Screw
Colour	Red
Container Shape	Cylindrical
Country of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (1,792)
Food Storage Container Airtightness	Airtight
Included Components	2 x Fermentation Jars
Is the item dishwasher safe?	Yes
Is the item microwaveable?	No
Item Dimensions L x W x H	12.4L x 12.4W x 17H centimetres
Item Form	Jar
Item Package Quantity	1
Item Type Name	Fermenting Jars
Item Volume	1.4 Litres
Item Weight	1.36 Kilograms
Manufacturer	HEFTMAN
Material	Glass
Material Features	Durable, Non-Porous, Dishwasher Safe, Stain Resistant
Other Special Features of the Product	Waterproof
Product Care Instructions	Refrigerator Safe
Recommended Uses For Product	Food storage and fermentation
Size	1.4 liters
UPC	759049739623

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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520533Fr

Duties & taxes included

In stock

Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Congo.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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