thread check vlave for pipes | NieRuf

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thread check vlave

Reliably sealing check valves!

check valves are usually used in pipeline systems (e.g. drains) in order to prevent a backflow of the medium. The swing check valve only allows the medium to flow in one direction. Should the pressure within the system exceed the valves resistance, the swing check opens in flow direction and allows for the medium to flow through. Once the pressure goes back to below the valve resistance, or even changes the flow direction of the medium, the swing check valve closes and seals reliably. In contrast to ball valves or butterfly valves, the closing of the valve happens automatically, regulated only through the pressure and flow of the medium.

Sleeved non-return valves made from brass or stainless steel

A sleeved non-return valve serves to prevent reflux in a pipe system. It is characterised by very high KV values thanks to its T design. The valve almost completely frees the passage through the fitting so that only very low flow resistances occur. However, it is essential that the flow direction and the installation location are noted. The flow direction is shown on the sleeved non-return valve with an arrow. The flow through the fitting may only be horizontal or vertical from bottom to top. Depending on the mode, the threaded non-return valves are available in brass (CW 617 N) or high quality stainless steel 1.4408. Both variants also have a metal seal, the brass variant is also available with an EPDM seal. The sleeved non-return valves are available in nominal widths ¼“ – 2“ inches. The connection is via a cylindrical BSP internal thread. The maximum pressure is 16 bar, the temperature range for the brass non-return valve is 0°C to +90°C and for the stainless steel non-return valve -20°C to max. +200°C.

swing check valve 1/2" inch GR02 brass metal

GR02000103

swing check valve 1/2" inch female thread, body made of brass, disc made of brass seal metal

Technical features

diameter 1/2" inch
body material brass
seal metal
flange female thread
disc material brass

swing check valve 3/8" inch GR02 brass metal

GR02000102

swing check valve 3/8" inch female thread, body made of brass, disc made of brass seal metal

Technical features

diameter 3/8" inch
body material brass
seal metal
flange female thread
disc material brass

swing check valve 3/8" inch GR01 stainless metal

GR01000002

swing check valve 3/8" inch female thread, body made of stainless steel 1.4408, disc made of stainless steel 1.4408 seal metal

Technical features

diameter 3/8" inch
body material stainless steel 1.4408
seal metal
flange female thread
disc material stainless steel 1.4408

swing check valve 1 1/4" inch GR02 brass metal

GR02000106

swing check valve 1 1/4" inch female thread, body made of brass, disc made of brass seal metal

Technical features

diameter 1 1/4" inch
body material brass
seal metal
flange female thread
disc material brass

swing check valve 1 1/2" inch GR02 brass metal

GR02000107

swing check valve 1 1/2" inch female thread, body made of brass, disc made of brass seal metal

Technical features

diameter 1 1/2" inch
body material brass
seal metal
flange female thread
disc material brass

swing check valve 1 1/2" inch GR01 stainless metal

GR01000007

swing check valve 1 1/2" inch female thread, body made of stainless steel 1.4408, disc made of stainless steel 1.4408 seal metal

Technical features

diameter 1 1/2" inch
body material stainless steel 1.4408
seal metal
flange female thread
disc material stainless steel 1.4408

swing check valve 2" inch GR02 brass EPDM

GR02000208

swing check valve 2" inch female thread, body made of brass, disc made of brass seal EPDM

Technical features

diameter 2" inch
body material brass
seal EPDM
flange female thread
disc material brass

swing check valve 2" inch GR02 brass metal

GR02000108

swing check valve 2" inch female thread, body made of brass, disc made of brass seal metal

Technical features

diameter 2" inch
body material brass
seal metal
flange female thread
disc material brass

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You can reach us from Monday to Friday at +497143 9666900 and any time at sales@nieruf.com

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Our certified quality management according to DIN EN ISO 9001: 2015 is part of our DNA. With our test stands we can carry out pressure tests with up to 350 bar with air and water as well as leak tests according to DIN EN 122661.

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or send us an e-mail:

sales@nieruf.com

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Frequently asked questions

Need help?

If you have any questions, we are available by phone from Monday to Friday from 8:30 a.m. to 5:00 p.m.

order via mail:

07143 / 96669 - 00

sales@nieruf.com