WATTS Temperature And Pressure Relief Valves

ASME and ANSI approved relief valves to protect water heaters and hot-water storage tanks from high temperature (max. 250 degrees F) and pressure (max. 150 psi) levels. Available in bronze, lead-free brass & lead-free copper silicon alloy material

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WATTS -

Boiler Water Feeders

StyleModelPrice (inc. VAT)
A142£1,508.38
B142S£1,539.89
WATTS -

3L Series Pressure Relief Valves

StyleModelBody MaterialRelief PressurePrice (inc. VAT)
A3L-125 3/4Brass75 Psi£118.46
A3L-125-Z9 3/4Bronze125 psi£139.72
A3L-100 3/4Bronze100 Psi£129.89
A3L-75-Z9 3/4Bronze75 Psi£134.62
A3L-150 3/4Bronze150 Psi£108.61
A3L-95 3/4Bronze95 Psi£118.46
A3L-150-Z9 3/4Bronze150 Psi£127.93
B3L-075 3/4Bronze75 Psi£118.46
WATTS -

53L Series Pressure Only Relief Valves

StyleModelMax. Working PressureRelief PressurePrice (inc. VAT)
A53L-175 1/2-175 Psi£113.75
A53L-075 1/2-75 Psi£113.75
A53L-Z2-030 1/2-30 Psi£113.75
B53L-150 1/2--£142.78
A53L-100 1/275 PSI100 Psi£113.75
C53L-FP-175 1/2131 psi175 Psi£111.00
WATTS -

530C Series Pressure Relief Valves

StyleModelInlet SizeOutlet SizePrice (inc. VAT)
A530C-STD 3/4--£130.32
B530FP1/2"1/2"£115.32
B530C-STD 1/21/2"1/2"£115.32
B530C-100-3003/4"3/4"£142.88
WATTS -

LF140 Series Pressure Relief Valves

StyleModelBody MaterialDischarge CapacityInlet SizeInlet Thread TypeInlet TypeMax. Temp.Outlet SizeRelief PressurePrice (inc. VAT)
ALF140X6 125-210 3/4Lead Free Brass-3/4"-Female Threaded210 Degree F3/4"125 psi£676.20
ALF140X8 150-210 3/4Lead Free Brass-3/4"-Female Threaded210 Degree F3/4"150 Psi£713.18
BLF140X8 125-210 3/4Lead Free Brass-3/4"-Female Threaded210 Degree F3/4"125 psi£739.30
ALF1403S 125-210 3/4Lead Free Brass-3/4"-Male Threaded210 Degree F3/4"125 psi£1,062.99
ALF140X6 150-210 3/4Lead Free Brass-3/4"-Female Threaded210 Degree F3/4"150 Psi£662.80
CLF140X6 125-210 1Lead Free Brass2610000 btuh1"FPTFemale Threaded210° F1"125 psi£1,484.64
CLF140X6 150-210 1Lead Free Bronze3085000 btuh1"NPTFemale Threaded210° F1"150 Psi£1,404.54
WATTS -

335 Series Temperature and Pressure Relief Valves

StyleModelPrice (inc. VAT)
AM335M2-030 3/4£68.88
RFQ
B335M2-030 3/4£126.72
C354A-030£81.87
WATTS -

340 Series Temperature and Pressure Relief Valves

StyleModelDischarge CapacityInlet SizeMfr. SeriesOutlet SizeRelief PressureThermostat Probe LengthPrice (inc. VAT)
A340-100/210 1 1/24426000 btuh1 1/2"3401-1/2"100 Psi3"£2,989.70
A340X-8-125210 1 1/25403000 btuh1 1/2"3401-1/2"125 psi8"£2,967.65
B342-125210 25403000 btuh2"3422"125 psi-£2,796.04
A340-125/210 1 1/25403000 btuh1 1/2"3401-1/2"125 psi3"£2,792.90
B342X-8-150210 26379000 btuh2"3422"150 Psi8"£3,233.75
A340-150210 1 1/26379000 btuh1 1/2"3401-1/2"150 Psi3"£2,792.90
A340X-8-150210 1 1/26379000 btuh1 1/2"3401-1/2"150 Psi8"£2,967.65
StyleModelInlet SizePrice (inc. VAT)
A94-32321/2"£14.06
RFQ
A94-42423/4"£19.46
RFQ
WATTS -

93 Series Angle Connector Gas Shutoff Valves

StyleModelInlet SizePrice (inc. VAT)
A93-20321/2"£17.77
RFQ
B93-10323/8"£14.46
RFQ
C93-30425/8"£24.70
RFQ
WATTS -

LL40XL Series Temperature and Pressure Relief Valves

StyleModelDischarge CapacityInlet SizeMax. Temp.Mfr. SeriesOutlet SizeRelief PressurePrice (inc. VAT)
ALLL40XLM15-125210 3/4-3/4"210 Degree F40L3/4"125 psi£744.48
ALLL40XLM15-150210 3/4-3/4"210 Degree F40L3/4"150 Psi£591.95
ALL40XLM15-150210 3/4-3/4"210 Degree FLL40XL3/4"150 Psi£565.98
ALL40XL-75210 3/4-3/4"210 Degree FLL40XL3/4"75 Psi£622.67
BLL40XLM15-125210 11808000 btuh1"210° FLL40XL1"125 psi£1,101.25
BLL40XLM15-150210 12134000 btuh1"210° FLL40XL1"150 Psi£1,028.83
WATTS -

53 Series Pressure Only Relief Valves

StyleModelInlet SizeOutlet SizeRelief PressurePrice (inc. VAT)
A53-035 1/21/2"1/2"35 Psi£120.03
A53-075 1/21/2"1/2"75 Psi£120.03
B53-125 1/21/2"1/2"125 psi£116.91
A53-100 1/21/2"1/2"100 Psi£128.32
C53-125 3/43/4"3/4"125 psi£121.24
C53-075 3/43/4"3/4"75 Psi£125.15
WATTS -

1XL Series Temperature and Pressure Relief Valves

StyleModelItemThermostat Probe LengthPrice (inc. VAT)
A1XL-8-150210Temperature & Pressure Relief Valve8"£56.67
B1XL-150210 1/2Temperature & Pressure Relief Valve4"£89.62
B1XL 75-210 1/2Temperature and Pressure Relief Valve4"£59.83
WATTS -

740 Series Water Pressure Relief Valves

Watts 740 Series pressure relief valves are ideal for protecting water heating equipment from excessive pressure. They are used in the pipeline or with vessels in pneumatics applications. These valves feature an iron body ensuring structural rigidity and durability. They feature non-mechanical seat-to-disc alignment that prevents the valve from sticking or freezing, ensuring smooth and consistent operation over time. Their seat is strategically located above the drain, preventing water from being trapped and sediment from fouling the seats. They can operate at pressures ranging from 30 to 75 psi (2 to 5 bar), providing reliable performance.

StyleModelDischarge CapacityInlet SizeMax. Working PressureOutlet SizeRelief PressurePrice (inc. VAT)
A740-045 11750000 btuh At 45 psi1"-1-1/4"45 Psi£909.10
A740-050 11899000 btuh1"38 psi1-1/4"50 Psi£363.86
A740-060 12200000 btuh1"45 psi1-1/4"60 Psi£633.01
A740-030 25250000 btuh2"20 psi2-1/2"30 Psi£1,393.15
RFQ
A740-060 28883000 btuh At 60 psi2"45 psi2-1/2"60 Psi£2,447.90
RFQ
WATTS -

LF340 Series Temperature and Pressure Relief Valves

StyleModelItemPrice (inc. VAT)
ALF340X-8 150-210 1 1/2Pressure Relief Valve£5,441.68
RFQ
BLF340 150-210 1 1/2Pressure Relief Valve£5,155.62
RFQ
CLF340 125-210 1 1/2Temperature and Pressure Relief Valve£5,288.24
WATTS -

LF53 Series Pressure Relief Valves

StyleModelInlet SizeOutlet SizeRelief PressurePrice (inc. VAT)
ALF53-125 1/21/2"1/2"125 psi£148.76
BLF53-75 1/21/2"1/2"75 Psi£153.51
ALF53-100 1/21/2"1/2"100 Psi£162.16
CLF53-125 3/43/4"3/4"125 psi£169.24
CLF53-75 3/43/4"3/4"75 Psi£159.81
DLF53-100 3/43/4"3/4"100 Psi£180.62
WATTS -

100XL Series Temperature and Pressure Relief Valves

StyleModelBody MaterialBody WidthBtuhFactory Set PressureInlet TypeItemMax. Temp.Max. Working PressurePrice (inc. VAT)
A100XL-BP-150210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F150 psi£38.96
B100XL-100210 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£53.53
B100XL4Z11 150180 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve180 Degree F-£56.67
A100XL-125210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F125 psi£34.25
C100XL-8-175210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F175 PSI£72.81
A100XL-175-210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F175 PSI£39.63
ADP100XL-TT-150210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F150 psi£153.51
DL100XLM7-3-125210 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£64.93
B100XL-150 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£25.97
E100XL-8-150210 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£37.37
F100XL-100180-Z11Brass---Male ThreadedTemperature and Pressure Relief Valve180° F113 psi£56.67
F100XL-090210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F90 psi£66.14
C100XL-8-100210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F100 PSI£69.48
C100XL-8-125210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F125 psi£60.08
A100XL-075210Brass---Male ThreadedTemperature and Pressure Relief Valve210° F75 PSI£53.21
DL100XL-100210 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£64.93
GLLL100XL-2M7-150210 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£49.20
B100XL-B-150210 3/4Brass---Male ThreadedTemperature and Pressure Relief Valve210 Degree F-£45.31
H100XL-4Bronze1.875"100,000150 psiMNPTTemperature & Pressure Relief Valve210 Degrees F-£22.21
H3/4 100XL 125Bronze1.75"105,000125 psiMNPTTemperature & Pressure Relief Valve210 Degrees F-£31.03
WATTS -

Temperature and Pressure Relief Valves

StyleModelBody MaterialItemMfr. SeriesPrice (inc. VAT)
A3/4 40XL8 150210-Pressure Relief Valve--
RFQ
B1L-2-150210BronzeTemperature and Pressure Relief Valve1L£56.28
C100DTPVCTemperature and Pressure Relief Valve100DT£13.67
StyleModelBody MaterialRelief PressureShank LengthPrice (inc. VAT)
ALF10L-2 75-210 3/4Lead Free Bronze75 Psi1 3/16"£81.09
ALF10L-2 125-210 3/4Lead Free Bronze125 psi1 3/16"£81.09
ALF10L-2 150-210 3/4Lead Free Copper Silicon Alloy150 Psi1 1/8"£73.58
StyleModelRelief PressurePrice (inc. VAT)
A374A-BRZ-03030 Psi£138.01
A374A-045 3/445 Psi£120.03
A374A-050 3/450 Psi£222.67
WATTS -

340 Series Automatic Re-Seating Temperature and Pressure Relief Valves

StyleModelDischarge CapacityInlet SizeMfr. SeriesOutlet SizeRelief PressurePrice (inc. VAT)
A340X-8-75210 1 1/2-1-1/2"3401-1/2"75 Psi£3,486.54
B342X-8-100210 2-2"3422"100 Psi£3,732.55
A340X-8-80210 1 1/2-1-1/2"3401-1/2"80 Psi£3,732.55
B342-100210 2-2"3422"100 Psi£3,517.98
C340X-8-Z-175210 1 1/2-1 1/2"3401-1/2"175 Psi£3,704.44
A340-075/210 1 1/2-1-1/2"3401-1/2"75 Psi£3,512.43
C340X-8-100210 1 1/24426000 btuh1 1/2"3401-1/2"100 Psi£3,177.03
D342X-8-125210 25403000 btuh2"3422"125 psi£3,315.59
WATTS -

Automatic Temperature Gas Shutoff Valves, 150 psi

StyleModelBody HeightShank LengthPrice (inc. VAT)
ALF210-5-M210.25"7/8"£528.73
BLFL210-5-M211 15/16"1.875"£539.41
CLFLLL210-5-M212 13/16"2.875"£702.07
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