The JV131001 is a economical safety relief valve for the protection of pressure systems and boiler systems. Suitable for use with steam, gases, vapours and liquids within the chemical and processing industries. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type High Capacity • Full Lift • Side Discharge • Closed Bonnet • Open Lifting Device Size & Connections DN15 to DN250 • Flanged PN40 x 16* Duty Air • Inert Gases • Oil • Process Liquids • Steam • Water Materials Ductile Iron Body • Stainless Steel Seat & Disc Set Pressure Range 0.2 to 40 bar (dependent on duty, size & temperature) Temperature -10°C to 350°C Compliance & Approvals BS6759 • DIN EN ISO 4126-1 • AD2000-A2 • TRD421 • Lloyds • GL • DNV • BV * DN65 & DN100 – PN16 x PN16 as standard (PN40 x PN16 option)

Watts 88004115

The Nabic 500 safety valve is an extremely versatile valve, suitable for use on hot water, steam or air. Although designed primarily or use on un-vented hot water heating systems, where a high capacity, emergency steam relief capability is required, it is also an ideal general purpose safety valve. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type High Capacity • Full Lift • Side Discharge • Lifting Lever Size & Connections 15mm (1/2″) to 65mm (2 1/2″) BSP Female Duty Air • Oil • Inert Gasses • Steam • Water Materials Bronze Body • PTFE Seat Seal (Viton option) Set Pressure Range 0.69 to 12.5 bar (dependent on size) Temperature  -20°C to 195°C Compliance & Approvals BS6759 • BSEN ISO 4126 • WRAS (1 bar and above)

The Nabic 542 safety valve is an extremely versatile valve, suitable for use on hot water, steam or air. Although designed primarily for protection of hot water boilers, it’s wide range of applications make it an ideal general purpose safety valve. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type Standard Capacity • Side Discharge • Lifting Lever Size & Connections DN32 (1 1/4″) to DN80 0mm (3″) Flanged x BSP Duty Air • Oil • Inert Gasses • Steam • Water Materials Bronze Body • PTFE Seat Seal (Viton option) Set Pressure Range 0.55 to 10.5 bar (dependent on size) Temperature  -20°C to 195°C Compliance & Approvals BS6759 • BSEN ISO 4126 • WRAS (1 bar and above)

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 & Bonnet • 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

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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

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 & Bonnet • 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

Wattslf009m2qtManual

This series features an integrated flood sensor with SentryPlus Alert® Technology to detect excessive water discharges from the relief valve. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. Connection kits are available for BMS and cellular communication.

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 220°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

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The Nabic 542 safety valve is an extremely versatile valve, suitable for use on hot water, steam or air. Although designed primarily for protection of hot water boilers, it’s wide range of applications make it an ideal general purpose safety valve. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type Standard Capacity • Side Discharge • Lifting Lever Size & Connections 15mm (1/2″) to 80mm (3″) BSP Female Duty Air • Oil • Inert Gasses • Steam • Water Materials Bronze Body • PTFE Seat Seal (Viton option) Set Pressure Range 0.55 to 10.5 bar (dependent on size) Temperature  -20°C to 195°C Compliance & Approvals BS6759 • BSEN ISO 4126 • WRAS (1 bar and above)

The Goetze 852 safety relief valve has a bronze body with various seal options making it suitable for various duties including seawater. This valve can be supplied either with open or closed cap. There is also an option with a bellows assembly. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type Side Discharge • Lever or Dome Top • Optional Bellows Size & Connections DN40 to DN50 • Flanged PN40 x 16 Duty Air • Oil • Inert Gasses • Seawater • Steam • Water Materials Bronze Body & Spring Housing • NBR Disc (SS, EPDM, FKM, FFKM & PTFE option) Set Pressure Range 0.5 to 25 bar Temperature NBR Disc : -30°C to 130°C (see datasheet for other materials) Compliance & Approvals TÜV Test Approval 2007 • BSEN ISO 4126-1

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

Wattslf009m2qtParts breakdown

Series 4000SS-FS Reduced Pressure Zone Assembly Backflow Preventer blocks the reverse flow of polluted water entering into the potable water supply as a result of backsiphonage and/or backpressure. The series consists of a stainless steel body construction with stainless steel internal parts. The bottom-mounted relief valve is located between the two check valves, making it suitable for installations against an outside wall. Series 4000SS-FS has a compact design with a short lay length, ideal for retrofit installations, and is intended for health hazard applications. Check with local water authorities for installation requirements. Maximum Working Pressure: 175 psi (12.06 bar).This series features an integrated flood sensor with SentryPlus Alert® Technology to detect excessive water discharges from the relief valve. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. Connection kits are available for BMS and cellular communication.To learn more visit: https://www.watts.com/floodprotectionsystem/

Series 4000SS-FS Reduced Pressure Zone Assembly Backflow Preventer blocks the reverse flow of polluted water entering into the potable water supply as a result of backsiphonage and/or backpressure. The series consists of a stainless steel body construction with stainless steel internal parts. The bottom-mounted relief valve is located between the two check valves, making it suitable for installations against an outside wall. Series 4000SS-FS has a compact design with a short lay length, ideal for retrofit installations, and is intended for health hazard applications. Check with local water authorities for installation requirements. Maximum Working Pressure: 175 psi (12.06 bar).

The Goetze 355 safety relief valve has a stainless steel body with various seal options. This valve can be supplied either with open or closed cap. There is also an option with a bellows assembly. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type Side Discharge • Lever or Dome Top • Optional Bellows Size & Connections DN15 to DN100 • Flanged PN40 x 16 Duty Air • Oil • Inert Gasses • Steam • Water Materials St. St. Body & Spring Housing • St. St. Disc (EPDM, FKM, FFKM & PTFE option) Set Pressure Range 0.2 to 40 bar Temperature Stainless Steel Disc : -60°C to 400°C (see datasheet for other materials) Compliance & Approvals TÜV Test Approval 2094 • BSEN ISO 4126-1

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For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:

The Goetze 355 safety relief valve has a cast iron body with various seal options. This valve can be supplied either with open or closed cap. There is also an option with a bellows assembly. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost. Type Side Discharge • Lever or Dome Top • Optional Bellows Size & Connections DN15 to DN100 • Flanged PN40 x 16 Duty Air • Oil • Inert Gasses • Steam • Water Materials Cast Iron Body & Spring Housing • St. St. Disc (EPDM, FKM, FFKM & PTFE option) Set Pressure Range 0.2 to 40 bar Temperature Stainless Steel Disc : -10°C to 350°C (see datasheet for other materials) Compliance & Approvals TÜV Test Approval 2094 • BSEN ISO 4126-1

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