Spirax SafeBloc DBB3 Double Block and Bleed

Technical Infomation


The Spirax SafeBloc is a double block and bleed bellows sealed stop valve, accommodated within the same face-to-face dimension of a single valve. It has been designed for use as an in-line double isolation valve on steam, gas, liquid, condensate and water systems.

Available types : DBB3 steel body and bonnet with PN40 or ANSI 300 connections.

Seat leakage:  Disc to seat shut-off conforms to EN 12266-1 Rate A leakage and ISO 5208 Rate A.

Bleed valve options:  A bleed valve connection is provided to depressurise the downstream when the upstream valve is isolated. This can be supplied with either a DN15 flanged, ½” screwed BSP or NPT or ½” socket weld connection and must be stated at the time of order placement.

Standards: This product fully complies with the requirements of the European Pressure Equipment Directive 97 / 23 / EC and carries the mark when so required.

Size and pipe connections : DN15, DN20, DN25, DN40, DN50, DN65, DN80 and DN100. Flanged EN 1092 PN40 or ANSI B 16.5 Class 300.

Face-to-face dimensions conform to BS EN 558:2008.

Add a Review
Tags: , , , .