The Worcester Bosch part is based around the diverter valve section. The diverter valve is a directional water device that only appears in combi boilers. It allows the hot water to be directed to the central heating (radiators, etc.) or to the domestic hot water system (taps, etc.).

Brand Name	Worcester Bosch
Colour	grey
Material	string
Manufacturer Model No	87161165410
Wear Type	string
Type	Air Pressure Switch
Certifications Met	string
Country of Origin	string
Protects From	string
Waterproof	string
Number of Pockets	string
Waist Size	aa82cg19fx
Compatible With	CDI 28 LPG FSP Combi, CDI 28 NG FSN Combi