UHV Burst Disc Pressure Relief Components

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Pressure Relief
Components - UHV Burst Disc

UHV Burst Disc

Features
UHV Compatible all metal construction ASME UD certified 10CFR851 compliant Pressure relief range 9 to 11.5 PSIG Leak tight to 2 x10^-10 std. cc/sec of Helium 316 Stainless steel body and disk membrane Bakeable to 450ºC Compact design with no moving parts Calculated Flow rates -107 SCFM on 1.33 Flg.Assy. -435 SCFM on 2.75 Flg.Assy. For Instructional Manual click here

Description

Burst Disks
MDC Burst Discs are designed as a safety device to protect vacuum systems against over-pressurization during back-fill or from an accidental increase in pressure due to a system malfunction. BDA-series ASME UD certified burst disks feature all-metal stainless steel construction and are designed for use in UHV applications.

Application
Most vacuum vessels are designed and constructed with internal vacuum joints and welds that are rated for an external load of one atmosphere. They are not pressure vessels and as such should not be subjected to positive pressure loads in excess of 1-ATM. For this purpose MDC has developed a new line of BDA disks that are ASME certified to prevent the accidental pressurizing of a vacuum vessel. MDC burst disks are offered with either 1.33 or 2.75 Del-Seal™ (CF style) metal seal flange connections. They can be fitted to any vacuum system where over pressurization is a concern.

Improved Design
MDC's BDA-series burst disks have been re-engineered to be 10CFR851 compliant. They are constructed with a frustum designed metal membrane which is capable of sustaining a vacuum load. As pressure inside a vacuum vessel reaches 11.5 PSIG the disk membrane activates and fully opens, relieving the pressure in the system. The disk membrane is circular scored preventing fragmenting upon rupture and thus does not pose harm to local personnel or equipment. Once activated, the disk is not reusable and must be replaced to restore the vessel to an operational condition.

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All "In Stock" parts ships same business day as ordered. Lead Time indicates business days. Please Note that cut off time for same day shipment is 1:30 p.m. Pacific Standard Time. Prices and specifications are subject to change without notice. See full terms of sale here.

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DESCRIPTION	Part Number	UOM	List Price	Net Price	Lead Time	Qty
Burst Disk 1.33 DS Flange	420032 REF# BDA-133-ASME	EACH	$666.00	$666.00	25 days
Burst Disk 2.75 DS Flange	420033 REF# BDA-275-ASME	EACH	$684.00	$684.00	25 days

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