Range of unvented monobloc groups consisting of an in-line pressure reducing valve (PRV) (adjustable between 2.7 and 3.3 bar or 3.2 and 3.8 bar - see model) and a pre-set expansion relief valve (SRV) (pre-set at either 4.5, 4.75, 5.0, 6.0 or 8.0 bar - see model) housed in a DZR brass body with an EPDM rubber diaphragm. The product incorporates a check valve cartridge, verified by test (suitable for backflow protection against Fluid Category 2). The expansion relief valve is fitted with a rotary type easing gear and the products are for use with copper pipe (manufactured to EN1057). Maximum inlet supply pressure 10.0 bar. Maximum operating temperature 85°C.
Inlet control group consisting of an in-line pressure reducing valve (adjustable pressure - see model) and a pre-set expansion relief valve (pre-set pressure - see model) housed in a DZR brass body with an EPDM rubber diaphragm. The product incorporates a check valve cartridge, verified by test (suitable for backflow protection against Fluid Category 2). Compression connection to be used with copper pipe EN1057 only. Maximum supply pressure 10.0 bar. Maximum operating temperature 40°C.
Range of filling loop assemblies, consisting of either a stainless steel braided, EPDM lined flexible hose assembly (300616 VIS and 300614 VIS) or a rigid copper tube assembly (3006315 VIS), a lever operated spherical valve and an in-line, non-verifiable double check valve assembly verified by test (suitable for backflow protection against fluid category 3) which incorporates an integral lever operated spherical valve. Maximum working pressure 10.0 bar. Maximum operating temperature 70°C , and 85°C for 300615 VIS.
Verifiable double check valve assembly consisting of two spring loaded resilient trim in-line check valve cartridges housed in a DZR brass body with two test ports. Maximum working pressure 10.0 bar. Maximum operating temperature 85°C.
Range of pressure relief valves with plastic bodies and EPDM diaphragms and ‘O’-rings, Factory pre-set at 3.0 bar. Maximum operating temperature 110°C.
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