China Factory Custom Dzr Brass Double Non Return Check Valve

Product Description

Product Specification:
Brass Single Check Valve Non Return Valve 15mm
Check Valve is an automatic valve, its main function is to prevent the media backflow, prevent pump and drive motor reverse, and discharge the container medium. Check valve can also be used in pipelines that its pressure which may rise to exceed the system pressure auxiliary supply.
1. Material: MS58, CW617N, CuZn40Pb2, CZ132, CW602N HOT STAMPING/ FORGING
2. Size: 1/2''-2''
3. Disc: Brass Disc silicon rubber seals or ABS disc NBR seals
4. Pipe thread: ISO 7/1, ISO228, DIN2999
5. Delivery Time: Within 30~45 days after received payment.
6. Payment Terms: T/T (30% payment in advance, the balance is paid at the sight of B/L copy).
7. Package: Inner box, outer carton, then by pallet.

Nominal Pressure	1.6Mpa
Working Medium	Water, non corrosive liquid(not include oil), saturated steam.
Working Temperature	-20ºC≤t≤150ºC.
Pressure Testing	ISO5208

Compression Ends manufactured to EN1254-2
Parallel thread Ends manufactured to ISO228/1(DIN259, BS2779, JIS B0202)G (PF) (BSPP)
Taper thread Ends manufactured to ISO7/1 (DIN2999, BS21, JIS B0203)R, Rc (PT) (BSPT)
Taper thread Ends manufactured to ISO7/1 (DIN2999, BS21, JIS B0203)R, Rc (PT) (BSPT)
Classification:
According to its structure and installed methods Check valve can be divided into:
1.Swing Check Valve: Swing check valve disc is cylindrical disk-shape, around the seat channel axis to do rotational movement, due to inner channel is the streamline, the flow resistance is smaller than the lift check valve, apply to the low flow rate and seldom flow changes large-caliber occasions, but it should not be used for pulsatile flow, its sealing performance is less than lift type. Swing Check Valve is devided into single disc, double disc, multi disc. These three types are mainly according to valve diameter, for the purpose to prevent the media stopping flow or reflux, reducing the hydraulic compact.
2.Lift Check Valve: disc slides along the body vertical axis, lift check valve can only be installed in horizontal pipelines, the high-pressure small-diameter check valve upper disc uses ball. Lift-type check valve body shape is the same with globe valve (commonly used to the globe valve), so its flow resistant coefficient is larger. its structure is similar to globe valves, body and disc are the same with globe valve. upper disc and lower bonnet have guided sleeve, the disc guided sleeve can freely lift, when the medium downstream, the disc opens by media thrust, when the media stopped-flow, the disc relies on self-vertical landing on the seat, affected as preventing media backwash. Straight-through lift check valve inlet and outlet media channel direction is perpendicular to seat channels; vertical lift-type check valve, its media inlet and outlet channel direction is the same with the valve seat passage, its flow resistance is smaller than the straight-through type.
FAQ:
1. What is your term of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
2. How about your delivery time?
A: It usually takes 15 to 30 days, which generally depends on the quantity of your order and our storage.
3. Can I get free samples?
A: Yes, send your address, your telephone number, post code, and express account number to us, and tell us which samples you need and samples specification.
4. Can you produce products with my own brand?
A: Yes, we can offer OEM services.
Our Company:
Ningbo Doway M&E Co., Ltd. is built in Ningbo China, which is established in 2000. We specialized in manufacturing brass & bronze valves and fittings, water meter accessories and pipe fittings. Our mainly products cover ball valves, angle valves, gate valves, check valves, bib cocks, marine valves, pipe fittings, PPR insert, radiator valves and fittings, camlock and grooved couplings etc.
Nowadays, we are involving in the fields of brass forged, brass investment casting, bronze sand casting, brass/bronze gravity casting etc. Our products are widely used in water and plumbing systems and well recognized in Europe, USA, Middle East and Other Land with competitive price, quality products, and considerate service. Our company passed ISO9001 Certification and CE Approval for our ball valves, and UL approval for our bronze ball valves.
Based on the Spirit "Honesty, Pragmatic, Innovation", we are proud to own one professional team and provided customers competitive prices, quality products with On Time Delivery. Also we have strong OEM and ODM ability for clients to supply various valves and fittings in brass & bronze material for water solution.
Ningbo Doway M&E Co., Ltd is seeking to be the best cooperator for water plumbing and improve its worth to customers. Please contact us freely to know more details about what we can bring to your sourcing operation.