JONENG Sanitary Flow — Home
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Wenzhou, China · Since 2007

Sanitary valves your inspector will accept

Butterfly, mixproof, diaphragm and tank-bottom valves for dairy, brewing and pharmaceutical process lines.

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Qualification-ready

Specify it down to the seat material

Filter on size, connection, body and seat material, pressure, temperature and surface finish — then send the specification straight to a quotation.

Request a quotation Industries we supply

2007

manufacturing since

45

CNC machines

5,000 m²

own factory

130

staff

100 %

pressure tested
Products

The spec is on the page

Every valve is published with its DN range, connection, body material and surface finish — so you can check it against your specification before you speak to anyone.

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Case study

Made for every hygienic line

Widely used in dairy, beer, wine, beverage, food, pharmaceutical, chemical and water treatment — and other process fields where the line is cleaned as often as it is run.

Read this case study
Why Joneng

Why choose Joneng

Four answers you can check, rather than four adjectives. Each one is proved further down this page.

We machine it — we do not broker it

Every valve is cut in our own factory in Longwan district, Wenzhou — 45 CNC machines, 34 of them LG Mazak, across 5,000 m² with 130 staff.

Inside the factory: We machine it — we do not broker it

The alloy is proved before it is cut

The grade is confirmed on 3 spectrometers before machining, and an EN 10204 3.1 certificate ships with the order — so “316L” is a measurement, not a description.

How we verify: The alloy is proved before it is cut

Tested, not sampled

Every valve is pressure tested across 3 test centres, and surface finish is measured on our own Ra instrument and recorded against your order.

How we verify: Tested, not sampled

The specification is public

DN range, pressure, finish and materials are published on every product page. Datasheets, drawings and CAD models download without an email address.

Open the documents: The specification is public

2007

Manufacturing in Longwan, Wenzhou

About Joneng

Machined, measured and tested under one roof

We have made sanitary stainless steel valves in our own factory in Longwan district, Wenzhou since 2007 — not sourced them, not assembled them from someone else’s castings.

Forty-five CNC machines, thirty-four of them LG Mazak, run across 5,000 m² with 130 staff. Alloy is confirmed on our own spectrometers before machining, surface finish is measured on a Ra instrument, and every valve is pressure tested across three test centres. Product contact materials are FDA-compliant.

More about the factory
Held and current

Certifications

Every one of these opens full size, without an email address, so the number, the scope and the dates can be read off the certificate itself rather than taken on trust. If a certification is not listed here, we do not hold it.

What we make

Hygienic flow equipment for process lines that are cleaned as often as they are run.

Stainless Steel Fittings

11 types

Tube Cap, Tee, Hose Adaptor, Union and 7 more

Stainless Steel Valves

20 types

Metering Valve, Rebreather Valve, Steam Trap, Flow Diversion Valve and 16 more

Stainless Steel Accessories

9 types

Manifold, Manhole Cover, Flexible Hose, Sight Glass and 5 more

Stainless Steel Pumps

9 types

Diaphragm Pump, Colloid Mill, High pressure homogenizer, Emulsion Pump and 5 more
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Built for the cycle, not just the medium

What destroys a seat is rarely the product — it is the clean that follows it. Each line below is specified around both.

Dairy

Twice-daily CIP at 80 °C caustic, then live steam. EPDM seats and a 0.8 µm internal finish that will not hold milkstone in the seat groove.

Learn more: Dairy

Brewing

Wort at 100 °C one hour, caustic the next, and CO₂ pressure in between. Butterfly and mixproof valves that hold a seal through the whole cycle.

Learn more: Brewing

Beverage

Acidic product, sugar deposits, and a fill line that cannot stop. Seats specified for pH and for the abrasion sugar carries, not just for temperature.

Learn more: Beverage

Food processing

Fats and oils that swell EPDM. FKM seats, drainable bodies, and no crevice where a slurry can sit between shifts.

Learn more: Food processing

Cosmetics

Viscous batches, frequent product changeover, and solvent cleaning between them. PTFE seats and a finish that releases rather than holds.

Learn more: Cosmetics

Pharmaceutical

WFI and clean steam, SIP at 121 °C, and a surface finish that has to be evidenced. Ra measured on our own instrument and recorded against the order.

Learn more: Pharmaceutical
In-house, not outsourced

How we verify what we ship

Material, surface and pressure are all checked on equipment we own, in the factory that machined the part. Nothing is sent out for verification, so nothing is verified by someone with no stake in the result.

01

Material

3 spectrometers confirm the alloy before machining — our own reading, not a mill certificate passed along from a supplier.

02

Surface

Ra roughness is measured on our own instrument and recorded against the order, so the figure on your paperwork is measured rather than assumed.

03

Pressure

3 test centres. Every valve is tested, not sampled — and the report ships with the goods.

04

Certification

CE, PED, ISO 9001 and FDA-compliant materials, with an EN 10204 3.1 certificate on every order.

No form, no login

Every dimension, published

Datasheets, dimension drawings, material certificates and CAD models are downloadable without an email address. If you are specifying a line, you should not have to ask us for a number before you can draw it.

Open the resource centre
PDF CE Declaration of Conformity — butterfly valves 468.8 KB PDF ASTM A270-03a (Chinese version) 140.2 KB PDF CE Declaration of Conformity — mixproof valves 468.8 KB PDF Mixer pump manual 650.8 KB PDF CE Declaration of Conformity — diaphragm and tank bottom valves 468.8 KB PDF CIP manual 731.6 KB

How to order

Published, so you can check we fit your project before you spend an afternoon on an enquiry.

Incoterms
EXW · FOB · CIF · DAP
From the workshop

What we have been writing

Seat materials, surface finishes and cleaning regimes — how sanitary valves behave on a real line, and what makes them fail.

Read all articles

Questions before a first order

Is there a minimum order?
Not for stock sizes — a single valve ships. Where a build needs tooling or a non-standard connection we say so in the quotation, with the quantity that makes it worth doing.
How long does an order take?
Stock items leave in three to five working days. Anything machined to order runs fifteen to twenty-five days depending on size and finish, and the quotation names a date rather than a range.
Which certificates come with a shipment?
EN 10204 3.1 material certificates as standard, with the heat number traceable to the part. Pressure test records, surface roughness readings and 3-A or ASME BPE conformity on request — name them at enquiry and they ship with the goods.
Can you match a drawing, or a part we already buy?
Send the drawing, or the part number and the make. We will confirm what we can match exactly and what would differ before you order, rather than after.
What surface finish do you supply as standard?
Ra 0.8 μm on internal sanitary surfaces, with Ra 0.4 μm and electropolishing available. Tell us the cleaning regime and we will say which one is worth paying for on your line.
Do you sell direct, or through distributors?
Both. We supply distributors and OEMs, and sell direct where there is no distributor in your market.
Get a price

Send the specification, not an introduction

Tell us the size, the connection and what runs through it, and you get a priced quotation instead of a request for more information.

  • Material certificate on every order
  • Every valve pressure tested, not sampled
  • Quoted in your language and your Incoterm

Start a quotation

Your name and email on the next screen, then it is sent.