Marston Technical Catalogue - Safety Systems UK Ltd

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PRODUCT RANGE - FORWARD ACTING BURSTING DISCS NT / NR Conventional Simple Domed Assemblies. The simplest of all discs, usually a single domed metallic foil which will probably fragment upon disc rupture. NTG / NRG Conventional Grooved Disc Assemblies. A single metallic foil which has grooved lines of weakness and is designed to be non-fragmenting. It will normally withstand vacuum conditions without the aid of a vacuum support. CS Composite Slotted Disc Assemblies A forward acting disc which has two membranes. A load-bearing slotted metallic outer membrane and a weaker, usually fluoropolymer, seal membrane giving a non-fragmenting design. This disc is widely used for lower bursting pressures. GR Graphite Discs A flat graphite disc, impregnated with a high quality resin, giving good corrosion resistance and low bursting pressures. The unique GR arrangement is designed to protect the disc from the effects of flange bolt loading. This disc fragments on rupture. Monobloc Graphite Discs A flat graphite disc, impregnated with a high quality resin, giving good corrosion resistance and low bursting pressures. This disc does not require a dedicated holder, and fragments on rupture. 7
PRODUCT RANGE - REVERSE BUCKLING BURSTING DISCS MN / MO Maxivent Assemblies Usually a single foil disc which has the pressure applied to its convex side. The dome inverts and is completely expelled from its holder and stopped by an arrestor. RBH / RBF Assemblies Usually a single foil disc which has the pressure applied to its convex side. The dome inverts and opens along a peripheral groove. It is designed to be retained by its hinge portion. LRB / LRF Assemblies Usually a single foil disc which is designed specifically for liquid duties. The pressure is applied to its convex side. The dome inverts and opens along a peripheral groove. It is designed to be retained by its hinge portion. SRBH Assemblies This disc has two membranes. A load-bearing slotted metallic membrane and a weaker, usually fluoropolymer, seal membrane giving a nonfragmenting design suitable for low bursting pressures. RBX Assemblies A single metallic foil which has pressure applied to the convex side. The dome inverts and the disc opens along radial grooved lines. It is designed to retain all parts and withstand full vacuum without the aid of a vacuum support. GRB Graphite Disc Assemblies A unique disc manufactured from pure graphite powder. It is suitable for high temperatures and extremely low bursting pressures. This disc will fragment on rupture. 8
Page 1 and 2: Pressure & Flame Protection Burstin
Page 3 and 4: The logical choice With over 50 yea
Page 5 and 6: CONTENTS Page Bursting Discs 5 Intr
Page 7: PRODUCT IDENTIFICATION Identificati
Page 11 and 12: Pressure and Temperature GUIDE TO B
Page 13 and 14: VACUUM/REVERSE PRESSURE SUPPORTS Op
Page 15 and 16: SCREWED, WELDED AND ADAPTOR TYPE AS
Page 17 and 18: LOCATION OF HOLDER BETWEEN FLANGES
Page 19 and 20: FOOLPROOFING FEATURES A wrongly ins
Page 21 and 22: Accessories EXCESS FLOW VALVES Exce
Page 23 and 24: BREAKWIRE INDICATORS Marston also m
Page 25 and 26: Wobaston Road, Fordhouses, Wolverha
Page 27 and 28: Pressure Range Bar g Size Range NB
Page 29 and 30: Who is at Risk Many industries are
Page 31 and 32: APPLICATIONS Explosion vent panels
Page 33 and 34: W w Frames FRAMES AND FITTING Marst
Page 35 and 36: Heat Shield A Heat Shield may be re
Page 37 and 38: Wobaston Road, Fordhouses, Wolverha
Page 39 and 40: Non Max Temp Max Pred Hygienic Frag

Marston Technical Catalogue - Safety Systems UK Ltd

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