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.
Range of automatic thermal balancing valves (DZR Brass) with non-rising spindle headwork, brass disc and EPDM seals. Maximum working pressure 16.0 bar. Maximum operating temperature 100°C.
Range of thermal balancing valves with brass bodies and EPDM O-rings. The products also incorporates an analogue temperature gauge. Maximum working pressure 16.0 bar.
Non-metallic materials and components comply with BS6920 at 90°C
'Drincable'. Blue coloured, extruded, EPDM rubber electrical cable. Shore hardness 50. Tested in-radius size 0.90mm. For use with water up to 23°C. This approval is for complete cable, the blue coloured outer part being the water contact layer.
'07148-70' components. Black coloured, compression moulded EPDM components with a shore hardness of 70. Sealing gaskets have an in-radius size of 1.0mm. Sealing membranes have an in-radius size of 0.92mm. Gasket membranes have an in-radius size of 0.85mm. Membrane seals have an in-radius size of 1.0mm. Sealing rings have an in-radius size of 1.0mm. For use with water up to 85°C.
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