Markets

Products A to Z

Bailey Birkett Safety Relief Valves

The performance of Bailey Birkett products has been continually proven in demanding environments and are often supplied to the chemical, food and drink, heating and pharmaceutical industries.

707 – Bailey Birkett High Lift Safety Relief Valve

The 707 range of safety relief valves offer protection against over pressure on boilers, compressors, pressure vessels, process pipelines and pressurised equipment. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
Standard Capacity • High Lift • Side Discharge • Lever or Dome Top
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP/NPT FxF or MxF • Flanged PN25, ANSI 150, BS10 H*
Duty
Air • Inert Gases • Oil • Process Liquids • Steam • Water (dependent on trim)
Materials
Bronze Body • Aflas, EPDM or Stainless Steel Disc
Set Pressure Range
0.35 to 24 bar
Temperature
Aflas Disc: -20°C to 200°C • EPDM Disc: -20°C to 95°C • SS Disc: -20°C to 224°C
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty) • BSEN ISO 4126 Part 1 • WRAS (EPDM disc)
* Flanged inlet x Screwed outlet only, specify when enquiring
Buy 707 – Bailey Birkett High Lift Safety Relief Valve707 – Bailey Birkett High Lift Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsWRAS Approved Product (EPDM Trim only)Bailey Birkett part of Emerson

707 – Bailey Birkett High Lift Safety Relief Valve

716 – Bailey Birkett High Capacity Full Lift Safety Relief Valve

The 716 range of safety relief valves offer protection against over pressure on boilers, compressors, pressure vessels, process pipelines and pressurised equipment. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
High Capacity • Full Lift • Side Discharge • Lever or Dome Top
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP/NPT • Flanged PN16/25, ANSI 150, BS10 E/F/H*
Duty
Air • Inert Gases • Oil • Process Liquids • Steam • Water (dependent on trim)
Materials
Bronze Body • Aflas, EPDM or Stainless Steel Disc
Set Pressure Range
0.35 to 32 bar (dependent on size & duty)
Temperature
Aflas Disc: -29°C to 200°C • EPDM Disc: -29°C to 150°C • SS Disc: -29°C to 260°C
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty) • BSEN ISO 4126 Part 1
* Flanged inlet x Screwed outlet only, specify when enquiring
Buy 716 – Bailey Birkett High Capacity Full Lift Safety Relief Valve716 – Bailey Birkett High Capacity Full Lift Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsBailey Birkett part of Emerson

716 – Bailey Birkett High Capacity Full Lift Safety Relief Valve

716T – Bailey Birkett Pressure & Temperature Safety Relief Valve

The 716T protects unvented hot water systems, against both excess pressure and excess temperature. Increasing pressure is sensed by the spring, which automatically opens the relief valve at the pre-set pressure and the integral probe independently monitors increases in temperature, safely opening the relief valve. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
Pressure & Temperature Relief • Side Discharge • Easing Lever
Size & Connections
20mm (3/4″) to 50mm (2″) BSP
Duty
Hot Water
Materials
Bronze Body • DZR Brass Internals • Silicone Trim
Set Pressure Range
2.4 to 10.3 bar
Lift Temperature
Approx. 90°C to 95°C (preset, not adjustable)
Compliance & Approvals
EN14890 • BS6283 • WRAS
Buy 716T – Bailey Birkett Pressure & Temperature Safety Relief Valve716T – Bailey Birkett Pressure & Temperature Safety Relief Valve - PDF DatasheetWRAS Approved Product (EPDM Trim only)Bailey Birkett part of Emerson

716T – Bailey Birkett Pressure & Temperature Safety Relief Valve

716SS – Bailey Birkett High Capacity Full Lift Stainless Steel Safety Relief Valve

The 716SS range of stainless steel safety relief valves offer protection against over pressure on boilers, compressors, pressure vessels, process pipelines and pressurised equipment. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
High Capacity • Full Lift • Side Discharge • Dome Top
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP/NPT • Flanged PN16/25, ANSI 150, BS10 E/F/H*
Duty
Air • Inert Gases • Oil • Process Liquids • Steam • Water (dependent on trim)
Materials
Bronze Body • Aflas, EPDM or Stainless Steel Disc
Set Pressure Range
0.35 to 12.5 bar (dependent on size & duty)
Temperature
Aflas Disc: -29°C to 200°C • EPDM Disc: -29°C to 150°C • SS Disc: -29°C to 260°C
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty)
* Flanged inlet x Screwed outlet only, specify when enquiring
Contact Us716SS – Bailey Birkett High Capacity Full Lift Stainless Steel Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsBailey Birkett part of Emerson

716SS – Bailey Birkett High Capacity Full Lift Stainless Steel Safety Relief Valve

480 / 485 / 490 – Bailey Birkett By-Pass & Relief Valve

For use with positive displacement pumps either of the rotary or reciprocating type and have been used successfully with water. It can also be used as a relief or combined relief and bypass valve and can be modified to operate as an integral pump by-pass relief valve. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
By-Pass • Side Discharge • Dome Top
Size & Connections
20mm (3/4″) to 80mm (3″) BSP Threaded
Duty
Most Liquids that are compatible with materials
Materials
Bronze Body (480 & 485) • Stainless Steel Body (490)
Set Pressure Range
0.35 to 24 bar (dependent on size)
Temperature
Bronze: -20°C to 120°C • Stainless Steel: -20°C to 200°C 
Compliance & Approvals
BS6759 Part 3
Contact Us480/485/490 – Bailey Birkett By-Pass & Relief Valve - PDF DatasheetCertificated to BS6759 StandardsBailey Birkett part of Emerson

480/485/490 – Bailey Birkett By-Pass & Relief Valve

746 – Bailey Birkett High Capacity Full Lift Carbon or Stainless Steel Safety Relief Valve

The 746 combination of top guiding, unobstructed seat bore and full lift capability ensures the highest possible discharge rate. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
High Capacity • Full Lift • Side Discharge • Lever, Packed Lever or Dome Top
Size & Connections
DN25 to DN100 • Flanged PN1640, ANSI 150/300*
Duty
Air • Inert Gases • Oil • Process Liquids • Steam • Water
Materials
Carbon or Stainless Steel Body • Stainless Steel Disc (EPDM, FKM or PTFE option)
Set Pressure Range
0.35  up to 40 bar (dependent on size)
Temperature
Stainless Steel Disc : -46°C to 427°C (see data sheet for others)
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty) • ASME VIII/TUV-AD Merkblatt A2 (on request)
* Dependent on series, specify when enquiring
Contact Us746 – Bailey Birkett High Capacity Full Lift Carbon or Stainless Steel Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsBailey Birkett part of Emerson

746 – Bailey Birkett High Capacity Full Lift Carbon or Stainless Steel Safety Relief Valve

683 / 686 / 693 / 696 – Bailey Birkett Single High Lift Cast Steel Safety Relief Valve

The 680 and 690 series of single high lift safety valves combine a top guided design, to provide an unobstructed seat bore, with a floating disc that aligns correctly under all working conditions. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
Single Pot • High Lift • Side Discharge • Lever (686/696) or Dome Top (683/693)
Size & Connections
DN40 to DN100 • Flanged PN16/25/40, ANSI 150/300, BS10 E/F/H*
Duty
Air • Inert Gases • Oil • Process Liquids • Steam • Water
Materials
Cast Steel Body • Cast Iron Cover • Stainless Steel Disc
Set Pressure Range
683/686 : 0.25 to 13 bar • 693/696 : 0.25 to 13 bar
Temperature
-20°C to 230°C
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty)
* Dependent on series, specify when enquiring
Contact Us683/686 & 693/696 – Bailey Birkett Single High Lift Cast Steel Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsBailey Birkett part of Emerson

683/686 & 693/696 – Bailey Birkett Single High Lift Cast Steel Safety Relief Valve

723 / 726 / 733 / 736 – Bailey Birkett Double High Lift Cast Steel Safety Relief Valve

The 720 and 730 series of double (twin) high lift safety valves combine a top guided design, to provide an unobstructed seat bore, with a floating disc that aligns correctly under all working conditions. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.

Type
Double (Twin) Pot • High Lift • Side Discharge • Lever (726/736) or Dome Top (723/733)
Size & Connections
DN40 to DN100 • Flanged PN16/25/40, ANSI 150/300, BS10 E/F/H*
Duty
Air • Inert Gases • Oil • Process Liquids • Steam • Water
Materials
Cast Steel Body • Cast Iron Cover • Stainless Steel Disc
Set Pressure Range
683/686 : 0.25 to 13 bar • 693/696 : 0.25 to 13 bar
Temperature
-20°C to 230°C
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty)
* Dependent on series, specify when enquiring
Contact Us723/726 & 733/736 – Bailey Birkett Double High Lift Cast Steel Safety Relief Valve - PDF DatasheetCertificated to BS6759 StandardsBailey Birkett part of Emerson

723/726 & 733/736 – Bailey Birkett Double High Lift Cast Steel Safety Relief Valve