These Frequently Asked Questions (FAQs) are khổng lồ provide a better understanding of terms và topics to vì with gas and liquid filtration and to answer the questions we regularly receive.

Bạn đang xem: What is the difference between nm3 and sm3?

Units of Measure

What does Nm3/hr mean?

Normal Meter Cubed per Hour. Unit used to measure gas flow rate. The ‘Normal’ refers to normal conditions of 0degC and 1 atm (standard atmosphere = 101.325 kPa) – for practicle purposes this is rounded to lớn 1 bar.

What is scfm?

Standard cubic feet per minute. Another common unit to measure gas flow.

How big is 0.1 micron?

0.1µm is 0.0001mm. There are 25,400 microns in one inch

What does PPM mean?

Parts per million. 1 PPM = 0.0001%

How can I convert scfm lớn Nm3/hr?

1 scfm = 1.669 Nm3/hr

How can I convert frombar lớn psi?

1 bar = 14.5 psi

How can I convert frompsi to bar?

1 psi= 0.069 bar

Filter Elements

What are borosilicate glass microfibers?

The microfibers are made from borosilicate glass. This is a type of glass produced from silica và boron oxide. Borosilicate glass has a very low coefficient of thermal expansion.

How big are the microfibers?

Depending on the grade of the filter element being produced the microfibres range in diameter from 0.25 to 5.0 micron.

What does “bonded” mean?

A bonded disposable filter element uses a binder khổng lồ hold the mircofibres together give the filter truyền thông structure and strength. Typical binders & epoxy resign, PVDF (Kynar), silica & silicone.

Do disposable microfibre filter elements need seals?

No, because the bonded filter elements are self-sealing, by the use of axial compression, seals are not needed.

Do I need a support core for gas applications?

Usually support cores are only needed for disposable filterelementswhen used of liquid applications. Tư vấn cages can also be used on the outside of disposable coalescing filter elements.

Can you produce filter elements with custom dimensions?

We regularly supply special form size filter elements with a range of diameters from 6mm up lớn 150mm & legths from 10mm up to 1000mm.

What is the correct flow direction for disposable filter elements?

Single layer particulate filter elements should flow outside khổng lồ inside through the filter element.

Two layer coalescing filter elements should flow inside khổng lồ outside through the filter element.

What is coalescing?

To coalesce is to combine elements together. Coalescing filters are designed to lớn separate two phases – normally it would be to lớn remove a liquid from a gas but they can also be used khổng lồ separate two liquid phases liquid/liquid coalescing.

Why does a coalescing filter element flow inside to lớn outside?

As the wet gas passes through the filter element aerosols & droplets are captured by the fibres & they then flow together & build lớn larger droplets. As the droplet breaks thought the outside surface it is kept there by surface tension until it becomes large enough lớn overcome gravity when it will run down the outside of the filter element và collect in the housing bowl.

I have a filter housing from a competitor. Can you supply replacement filter elements?

Our filter elements are based on industry standard dimensions và grades so we can offer complete interchangeably for competitor products. We will save you money too!

What is delta P?

Delta P, or differential pressure, is the measurement of pressure drop across the filter element. Typically our filter element flow rates are calculated using an initial dry pressure drop of 0.1 bar (1.5 psig).

Filter Housings

How many ports vì chưng I need?

Usually an end-of-line filter will have one port. An in-line particulate filter housing will have 2 ports và a coalescing filter housing will have tree ports – the third port in the bowl is to lớn allow removal of the liquid. Sometimes the third port will have a manual or automatic drain.

What pressures can the filter housings be used for?

Housings can be used for negative and positive pressure applications giving a range from total vacuum to over 1300 bar.

Can you make me a special housing?

We can supply special housings from a single custom housing up khổng lồ production runs of 1000’s.

Can you make filter housings in special materials?

Yes, we have experience of filter housings in a huge of materials. Click here for more information.

Xem thêm: Hình Ảnh Chúc Buổi Trưa Ngon Miệng? Hình Ảnh Chào Buổi Trưa Đẹp, Ý Nghĩa Nhất

Can you supply housings coated for special applications?

We regularly supply housings with coatings lượt thích Sulfinert, or SilcoNert khổng lồ use the new brand name, and we can vị other coatings as well.

Can I have a filter housing with additional ports?

No problem. Let us know how many you need & where they should be positioned.

Do you charge lớn design a special housing?

All kiến thiết work is không tính phí of charge.

Can you supply CAD drawings?

We can produce 3d & 2d drawings in several CAD tệp tin formats. Let us know what you need.

I have a filter element from a competitor. Can you make me a special housing for it?

No problem. Let us know what you need.

What is a CE mark?

A CE mark is making requirement of the Pressure Equipment Directive 2014/68/EU. For more information about CE marks click here.

What port threads can you produce?

Our standard port thread is NPT but we also supply filter housings with BSPT, BSPP (G threads), SAE threads, high pressure Autoclave và HiP threads.

Do you make housings with flanges?

Yes we have a special range of housings with flanged connections and have experience of these flange types –

• ASME/ANSI B16.5 – 1996 – Pipe Flanges & Flanged Fittings

• British Standard BS 4504 – Section 3.1:1989 – Circular Flanges for Pipes, Valves & Fittings

• SAE J 518 C – SAE Flanges Standard

Is 316L the only stainless steel you use?

For our standard, stocked filter housings we only use 316L stainless steel that has traceability back khổng lồ the mill. Other grades of stainless steel can be supplied including 303, 304, Duplex and Super Duplex etc.

Can you supply material certificates khổng lồ EN 10204-3.1

All our stainless steel housings have a serial number that gives complete traceability back lớn the mill. We can offer material certificates to lớn EN 10204-3.1standard.

What other certificates can you offer?

Typical certificates include material certificates khổng lồ EN 10204-3.1, Certificates of Conformity, Pressure test certificates, Leak kiểm tra certificates and Certificates of Origin.

Other questions

Do you have ISO 9001?

Yes, we are operating a chất lượng management system to lớn ISO 9001. Our certificate can be found here.

Do you know someone who can manufacture a component for me which is not filter related?

As well as manufacturing bespoke filter housings we often help our customers by manufacturing parts they are having difficulty getting made no matter what they are. Send us a drawing và we’ll see if we can help .

Can you ship using my courier tài khoản number?

We can ship on our trương mục or your account and can arrange shipping và collections from all the major courier companies.

If I have an urgent order can you ship directly to my customer?

Email through your order with your delivery paperwork và delivery details và we will send it as per your instructions.

Can you label your sản phẩm boxes with my logo and label?

We supply this service to a number of our customers, please supply the artwork & product codes if required and we will vì the rest.

Can we place a call-off order for regular shipments?

We can set-up regular shipments for your call-off orders, or have a more flexible system where the items are called-off when required.

Xem thêm: Top 3 Bài Cảm Nhận Nhân Vật A Phủ Ngắn Gọn Nhất, Phân Tích Nhân Vật A Phủ Trong Vợ Chồng A Phủ

Do you offer “bonded stock” solutions for items we use on a regular basis?

We are happy lớn discuss all options of “bonded stock” and work with OEM customers to ensure their requirements & fully met.

Have a question for us? hotline us on +44 (0)1634 724224 or e-mail us your requirements to