Size Selection
1" - 2"1" to 2" NPS (DN 25 - DN 50)
3" - 6"3" to 6" NPS (DN 80 - DN 150)
8" - 24"8" to 24" NPS (DN 200 - DN 600)
Product page
SKYLAND
ASME B16.48 Bleed Rings (Drip Rings / Test Inserts)
Skyland Bleed Rings (Drip Rings / Test Insert Rings) are manufactured to ASME B16.48 to fit between standard ASME B16.5 mating flanges inside the bolt circle. Equipped with one or two radial threaded NPT or socket weld ports, they allow controlled venting, pressure relief, liquid draining, or direct attachment of pressure transmitters and sampling valves without modifying existing pipe spools.
Manufactured to ASME B16.48 specifications
Pressure Classes: Class 150, 300, 600, 900, 1500, and 2500 LBS
Sizes: 1/2" to 24" NB (DN 15 to DN 600)
Standard tapped ports: 1/2" NPT, 3/4" NPT, or socket weld instrument connections (single or dual opposing ports)
Ready for quotationShare your range, connection and case requirement.
Talk to ATHStandardASME B16.48
Pressure ClassClass 150#, 300#, 600#, 900#, 1500#, 2500#
Sizes1/2" to 24" (DN 15 to DN 600)
Tapped Ports1/2" NPT (F), 3/4" NPT (F) or socket weld
MaterialsA105N, A350 LF2, A182 F316L, Duplex F51, Inconel
CertificationsEN 10204 3.1, PED 2014/68/EU, ISO 9001:2015
Instrumentation Hardware
ASME B16.48 Bleed Ring Data
Select nominal size, pressure class, port size, and alloy grade.
StandardASME B16.48
ThicknessStandard 1.5" (38 mm)
Classes150# to 2500#
Ports1/2" or 3/4" NPT
Part Number Example
SKL-BR-030-300RF-1/2NPT-316L
SKLBrandSkyland Metal & Alloys
BRTypeBleed Ring (Drip Ring)
030Size3" NPS (DN 80)
300RFClassClass 300 Raised Face
1/2NPTPort1/2" NPT Tapped Port
316LMaterialASTM A182 F316L
Technical specifications
Design StandardASME B16.48
Operational Notes
Enables quick flushing and chemical injection between isolation block valves.
Product Overview & Applications
Bleed rings are clamped between two standard flanges, allowing pressure relief valves, bleed valves, or pressure gauges to be installed effortlessly without cutting into the pipeline.