Controllable anti-pollution check valve EA type with union connectors, RV281

Controllable anti-pollution check valve EA type with union connectors, RV281
Check valves of this type are for use as an independent means of preventing reverse water flow and for installing directly after a water meter on central water supply systems. They can also be used for industrial, commercial and similar systems where back pressure, back flow and back syphonage must be prevented. The classicfications of appliances to meet these requirements are specified in EN 1717.
Approvals DIN/DVGW, fully approved for noise level protection to class 1
Media Water, compressed air, medium and light fuel oils, kerosene, petroleum with less than 15 percent aromatic content. Not suitable for gaseous mediums below 0,5 bar, steam, heavy fuel oils or benzole.
Body material brass
Static pressure PN16
Mounting position horizontal or vertical
Additional description Operating temperature with water 75 oC (short term up to 90 oC). With compressed air and other mediums up to 70 oC
Universal application
Suitable for installation in any position
Creates no shock pressure loadings
Union connectors simplify service
Low pressure loss
Reliable, tried and tested
applcertmarkdindvgwge23
applcertmarkghostge23
applcertmarkkiwage23
With female threaded union connectors
Port connection typePort diameterDN sizeFlow capacity KvsType
 inchmm  
internal threads1/2156RV281-1/2A  PDF
internal threads3/4208RV281-3/4A  PDF
internal threads12520RV281-1A  PDF
internal threads1 1/43228RV281-11/4A  PDF
internal threads1 1/24040RV281-11/2A  PDF
internal threads25065RV281-2A  PDF
With soldered union connectors
Port connection typePort diameterDN sizeFlow capacity KvsType
 inchmm  
soldering1/2156RV281-1/2B  PDF
soldering3/4208RV281-3/4B  PDF
soldering12520RV281-1B  PDF
soldering1 1/43228RV281-11/4B  PDF
soldering1 1/24040RV281-11/2B  PDF
soldering25065RV281-2B  PDF