pressure relief valves
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![Wika 52719222 612.20.4" -30 inH2O...0 inH2O 1/2 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_7259d074-500f-422f-8f0b-c76d2978bac3_medium.png?v=1720031236)
52719222 | 612.20.4" -30 inH2O...0 inH2O 1 / 2 NPT lower mount | Wika
Brand: Wika
SKU: 52719222
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![Wika 52717851 PGT23.100...LM-D-30 100 psi 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_fea33199-7d82-451a-9086-e285e9b8b3ed_medium.png?v=1720031236)
52717851 | PGT23.100...LM-D-30 100 psi 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52717851
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![Wika 52635775 131.11.1.5" 1500 psi 2nd scale bar 1/8" NPT center back m | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_131_11_en_us_62633_fe184f2c-65e9-4f83-b2bc-6b12fb8dd916_medium.png?v=1720031229)
52635775 | 131.11.1.5" 1500 psi 2nd scale bar 1 / 8" NPT center back m | Wika
Brand: Wika
SKU: 52635775
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![Wika 52613607 612.20.4" 0 in.WC...30 in.WC 1/2 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_612_20_de_de_48114_97e3d5a3-0f76-4915-a4fc-00780f3011b6_medium.png?v=1720031226)
52613607 | 612.20.4" 0 in.WC...30 in.WC 1 / 2 NPT lower mount | Wika
Brand: Wika
SKU: 52613607
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![Wika 52596281 233.54.063 700 kPa 2nd scale psi 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_23X_54_en_us_62598_c224ed5a-a8a9-47c8-a809-db7a42734488_medium.png?v=1720031221)
52596281 | 233.54.063 700 kPa 2nd scale psi 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52596281
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![Wika 52609979 233.50.2.5" 10 bar 2nd scale psi 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_bbc58f30-5889-4ca4-b375-637ac3b4d58e_medium.png?v=1720031217)
52609979 | 233.50.2.5" 10 bar 2nd scale psi 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52609979
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![Wika 52591239 910.13 OVRPRS PROT 240/400BAR 1/2NPTMX1/2NPTF SS NACE 3.1 SE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_910_13_de_de_3271_a719b8e6-b9b9-4833-a6b8-2649e4fc9064_medium.png?v=1720031221)
52591239 | 910.13 OVRPRS PROT 240 / 400BAR 1 / 2NPTMX1 / 2NPTF SS NACE 3.1 SE | Wika
Brand: Wika
SKU: 52591239
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![Wika 52545954 213.53.4" 2000 psi 2nd scale bar 1/2 NPT lower back mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_21X_53_en_us_62635_7734ceef-3bf6-4c1d-8460-b0053bbd0c25_medium.png?v=1720031194)
52545954 | 213.53.4" 2000 psi 2nd scale bar 1 / 2 NPT lower back mount | Wika
Brand: Wika
SKU: 52545954
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![Wika 52562123 232.34.4.5" (approx. 7 bar) 100PSI/FTH20 1/2 NPT lower mou | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_232_34_233_34_en_us_62202_dad81299-b35e-41a6-910e-243be8495451_medium.png?v=1720031193)
52562123 | 232.34.4.5" (approx. 7 bar) 100PSI / FTH20 1 / 2 NPT lower mou | Wika
Brand: Wika
SKU: 52562123
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![Wika 52518191 233.53.063 3000 psi 2nd scale bar 1/4 NPT center back mou | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_23X_53_en_us_62600_ec1bcce4-9d29-410e-a2d4-12dabc7f333a_medium.png?v=1720031188)
52518191 | 233.53.063 3000 psi 2nd scale bar 1 / 4 NPT center back mou | Wika
Brand: Wika
SKU: 52518191
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![Wika 52520200 233.53.063 400 psi 2nd scale bar 1/4 NPT center back moun | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_5f91a2e5-8a11-442b-bb25-56495893981e_medium.png?v=1720031182)
52520200 | 233.53.063 400 psi 2nd scale bar 1 / 4 NPT center back moun | Wika
Brand: Wika
SKU: 52520200
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![Wika 52481999 232.54.063 6000 psi 2nd scale bar 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_7adac417-4b93-4454-bc16-f164ef5c7a00_medium.png?v=1720031181)
52481999 | 232.54.063 6000 psi 2nd scale bar 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52481999
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![Wika 52440486 233.50.2.5" 250 bar 2nd scale psi G1/4B lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_bfa324c4-9b3a-47e7-807f-8b97786a84f4_medium.png?v=1720031178)
52440486 | 233.50.2.5" 250 bar 2nd scale psi G1 / 4B lower mount | Wika
Brand: Wika
SKU: 52440486
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![Wika 52547647 213.40.2.5" 15000 psi 2nd scale bar 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_54093c98-d241-4bbf-8a8e-22c2c7a6e732_medium.png?v=1720031174)
52547647 | 213.40.2.5" 15000 psi 2nd scale bar 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52547647
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![Wika 52469956 233.50.2.5" (approx. 160 bar) 0-150BAR/PSI 1/4 NPT lower | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_14278783-5b67-4f80-a1a3-54b27b2c0919_medium.png?v=1720031167)
52469956 | 233.50.2.5" (approx. 160 bar) 0-150BAR / PSI 1 / 4 NPT lower | Wika (OBSOLETE)
Brand: Wika
SKU: 52469956
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![Wika 52412784 910.13 OVRPRS PROT 240/400BAR 1/4NPTMX1/4NPTF SS NACE 3.1 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_910_13_de_de_3271_e1e9d2f2-5cbf-4a6f-9514-a94d748c7704_medium.png?v=1720031168)
52412784 | 910.13 OVRPRS PROT 240 / 400BAR 1 / 4NPTMX1 / 4NPTF SS NACE 3.1 | Wika
Brand: Wika
SKU: 52412784
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![Wika 52395596 212.54.2.5" (approx. 40 bar) 0 ... 3.5 MPa 1/8 NPT lower | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_0c98a145-8a98-4b84-8afd-7c008bdff639_medium.png?v=1720031161)
52395596 | 212.54.2.5" (approx. 40 bar) 0 ... 3.5 MPa 1 / 8 NPT lower | Wika (OBSOLETE)
Brand: Wika
SKU: 52395596
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![Wika 52359573 131.11.1.5" 3000 psi 2nd scale bar 1/8" NPT center back m | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_131_11_en_us_62633_bd8f5cb5-7df2-40e9-b426-bb2c720206c0_medium.png?v=1720031154)
52359573 | 131.11.1.5" 3000 psi 2nd scale bar 1 / 8" NPT center back m | Wika
Brand: Wika
SKU: 52359573
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![Wika 52378756 A-10; -30 InHg...+160 psi; 7/16"-20 UNF SAE O-Ring Boss; 0 . | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_A_10_de_de_2942_de10fa87-25fd-44d9-a13d-f15e91da8c7e_medium.png?v=1720031154)
52378756 | A-10; -30 InHg...+160 psi; 7 / 16"-20 UNF SAE O-Ring Boss; 0 . | Wika
Brand: Wika
SKU: 52378756
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![Wika 52381579 A-10; 0...5000 psig; 7/16"-20 UNF SAE O-Ring Boss; 0 ... 10 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_A_10_de_de_2942_2c08c332-b0a9-43df-bbea-4b06cdb18c39_medium.png?v=1720031149)
52381579 | A-10; 0...5000 psig; 7 / 16"-20 UNF SAE O-Ring Boss; 0 ... 10 | Wika
Brand: Wika
SKU: 52381579
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![Wika 52364259 111.11 2.0" 4000 psi 2nd scale kPa 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_f4646a75-9f38-453c-9945-092ef5a71a92_medium.png?v=1720031151)
52364259 | 111.11 2.0" 4000 psi 2nd scale kPa 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52364259
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![Wika 52302709 213.53.2.5" 4000 psi 2nd scale bar 1/4 NPT lower mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_5ea32a37-0e2e-4646-9f3c-9f39b1a876be_medium.png?v=1720031143)
52302709 | 213.53.2.5" 4000 psi 2nd scale bar 1 / 4 NPT lower mount | Wika
Brand: Wika
SKU: 52302709
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![Wika 52308189 213.53.4" 7500 psi 2nd scale bar 1/4 NPT lower back mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_PR_21X_53_en_us_62635_fc24e150-a606-4cd6-8051-745559678cda_medium.png?v=1720031141)
52308189 | 213.53.4" 7500 psi 2nd scale bar 1 / 4 NPT lower back mount | Wika
Brand: Wika
SKU: 52308189
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![Wika 52329178 232.53.063 2000 psi 2nd scale kPa 1/4 NPT center back | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/wika_logo_cab56636-fe3b-4239-80f1-add1763b9d83_medium.png?v=1720031137)
52329178 | 232.53.063 2000 psi 2nd scale kPa 1 / 4 NPT center back | Wika
Brand: Wika
SKU: 52329178
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