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Sustainable quality.

Sustainable quality.

SAFETY DEVICES

Safety Relief Valves

Safety valves or relief valves are designed to relieve pressure when a fluid exceeds a pre-set limit. Their function is to counter a possible rupture of the protected system or the failure of a device or pipeline as a result of excessive pressure.

095/096

Bronze/ stainless steel, PN 16/25, proportional lift safety valve, suitable for up to 25 bar, max temperature 250ºC (version determined), PTFE, Silicone or Viton seal, construction AP: open cap with lever or ES: closed cap without lever available with male inlet x female screwed outlet or flanged inlet x screwed outlet.

8x8mm to 25x25mm

295/29

Bronze, carbon or stainless steel, PN 25, normal lift safety valve, suitable for up to 25 bar, max temperature 250ºC (version determined), PTFE, Silicone or Viton seal, construction AP: open cap with lever or ES: closed cap without lever available with male inlet x female screwed outlet or flanged inlet x flanged outlet.

15x25mm to 32x50mm 

495/496

Cast & nodular iron or stainless & carbon steel, PN 16/40, full lift safety valve, suitable for up to 40 bar, max temperature 450ºC (version determined), stainless trim, construction AP: open cap with lever or ES: closed cap without lever or construction EP: closed cap with lever or CP: enclosed spring with lever available with male inlet x female screwed outlet or flanged inlet x flanged outlet.

20x32mm to 25x40mm – screwed

20x25mm to 200x300mm – flanged

596/696

Stainless or carbon steel, PN 25/160, full lift safety valve, suitable for up to 95 bar, max temperature 450ºC (version determined), stainless steel trim, construction AP: open cap with lever or ES: closed cap without lever or construction EP: closed cap with lever or CP: enclosed spring with lever available with flanged inlet x flanged outlet.

25x32mm to 400x500mm – 596 model 25x40mm to 300x400mm – 696 model

A = open cap
E = closed cap
P = with lever 
S = without lever
C = enclosed sprin

Rupture Discs

Donadon Range

Rupture discs are safety devices with the function of stopping sudden variations in pressure from damaging an industrial plant. They mainly consist of a thin membrane – which can be made of several different materials, depending on the exact situation – which is designed to break and open when the specific level of differential pressure rises above the resistance limit that the disc was originally calibrated for, so as to allow for the excess pressure to vent out safely.

Forward-acting rupture disc – Valve protection

Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Standard membrane material PTFE, PFA, Aluminium. Designed to fit in a holder. Burst pressure from 0.05 bar to 110 bar for liquid or gas service. 265ºC. Tolerance from ±5% to ±20%.

15mm to 1000mm

DIF

Forward-acting rupture disc – Static conditions 

Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Standard membrane material PTFE, PFA, Aluminium. Designed to fit directly between flanges. Burst pressure from 0.05 bar to 5 bar for low pressure liquid or gas service. 265ºC. Tolerance from ±5% to ±20%.

50mm to 1000mm

LPD

Forward-acting rupture disc – Processing and storage tanks 

Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Standard membrane material PTFE, PFA. Designed to fit directly between flanges. Burst pressure from 5 millibar to 500 millibar for low

pressure liquid or gas service. 265ºC. Tolerance from ±5% to ±20%. 

50mm to 500mm

DCD

Forward-acting rupture disc – Valve protection

Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Standard membrane material PTFE, PFA, Aluminium. Designed to fit in a holder. Burst pressure from 0.05 bar to 110 bar for liquid or gas service. 265ºC. Tolerance from ±5% to ±20%.

15mm to 1000mm

TCD

Forward-acting rupture disc – Static, cycling and pulsating conditions Standard material of construction 316SS, Alloy. Standard membrane material PTFE, PFA. Designed to fit directly between flanges. Burst pressure from 3 bar to 5 bar for liquid or gas service. 265ºC. Tolerance ±5%. 

50mm to 80mm

STD

Forward-acting rupture disc – Concave solid disc for cycling and pulsating conditions Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Designed to fit in a holder. Burst pressure from 5 bar to 1150 bar for liquid or gas service. 480ºC. Tolerance from ±5% to ±20% .

15mm to 600mm

Y90

Reverse-acting rupture disc – Large temperature variations Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Designed to fit in a holder. Burst pressure from 0.2 bar to 70 bar for liquid or gas service. – 196ºC to 480ºC. Tolerance from ±5% to ±20%.

25mm to 200mm
15mm to 600mm

KRD

ASME Certified (UD Stamp) KRD 

Reverse-acting micro-scored rupture disc – Liquids only Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Designed to fit in a holder. Burst pressure from 0.41 bar to 137 bar for liquid service. – 196ºC to 480ºC. Tolerance from ±5% to ±20%.

15mm to 900mm

SCR

Reverse-acting micro-scored rupture disc – Gas only –

Absolute vacuum without support 

Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Designed to fit in a holder. Burst pressure from 0.41 bar to 137 bar for gas service. – 196ºC to 480ºC. Tolerance from ±5% to ±20%.

15mm to 900mm

SCD

Forward-acting micro-scored rupture disc – Absolute vacuum without support 

Standard material of construction 316SS, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium, Tantalum. Designed to fit in a holder. Burst pressure from 2 bar to 413 bar for liquid and gas service. – 196ºC to 480ºC. Tolerance from ±5% to ±20%.

15mm to 900mm

Please Note:

Manufacturing of RUPTURE DISCS will only take place on receipt of order. For further advice or assistance, please contact our Valve Product Specialist, Theo Pieterse – theo.pieterse@klinger.co.za or 011 842 8300.

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