Discharge Accessories
Secondary Pressure Control Pop-Off Valves • Opens when system exceeds preset pressure. • Lightweight, compact design quickly and conveniently mounts directly into discharge line. • Ultra compact models for portable systems. BRASS MODELS MODEL MAX FLOW PRESSURE RANGE MAX RELIEF SETTING PORTS GPM LPM PSI BAR PSI BAR INLET/DISCHARGE BYPASS 30960 6.0 23 300–1500 20–103 1650 114 1/4" NPT(M) 3/4" Barb 33960 6.0 23 300–1500 20–103 1650 114 3/8" NPT(M) 3/4" Barb 33960S* 6.0 23 300–1500 20–103 1650 114 3/8" NPT(M) 3/4" Barb 30961 6.0 23 1000–3000 69–207 3300 228 1/4" NPT(M) 3/4" Barb 33961 6.0 23 1000–4000 69–276 4400 303 1/4" NPT(M) 3/4" Barb 33961S* 6.0 23 1000–4000 69–276 4400 303 1/4" NPT(M) 3/4" Barb 33962 6.0 23 1000–4000 69–276 4400 303 3/8" NPT(M) 3/4" Barb 33962S* 6.0 23 1000–4000 69–276 4400 303 3/8" NPT(M) 3/4" Barb 9940 25 95 1000–4000 69–276 4400 303 3/4" NPT(M) 1" Barb * High-temperature models up to 240° F (115° C)
9962
30961
316 STAINLESS STEEL MODELS MODEL MAX FLOW PRESSURE RANGE
MAX RELIEF SETTING
PORTS
GPM LPM PSI 6.0 23 300–1500 6.0 23 300–1500 6.0 23 1000–3000 6.0 23 1000–3000 6.0 23 1000–4000 6.0 23 1000–4000 25 95 1000–4000 50 189 1000–6000 100 378 300–1500 100 378 1000–8000 115 435 500–3000 135 511 400–1500 210 795 800–4000
BAR
PSI
BAR 114 114 228 228 308 308 758 303 517 129 129 689 258 129 345
INLET/DISCHARGE BYPASS
9960
20–103 20–103 69–207 69–207 69–276 69–276 69–276 69–414 20–103 20–103 69–550 35–207 28–103 55–276
1650 1650 3300 3300
1/4" NPT(M) 1/4" NPT(M) 1/4" NPT(M) 1/4" NPT(M) 1/4" NPT(M) 1/4" NPT(M) 1/2" NPT(F) 3/4" NPT(M) 1" NPT(M) 1" NPT(M) 1" NPT(M) 2" NPT(M) 1" NPT(M) 2" NPT(M) 2" NPT(M)
3/4" Barb 3/4" Barb 3/4" Barb 3/4" Barb 3/4" Barb 3/4" Barb 1" NPT(F) 1" NPT(F) 1" NPT(F) 1" NPT(F) 2" NPT(F) 1" NPT(F) 2" NPT(F) 2" NPT(F) 1" Barb
9960S*
9961
9961S*
9962
4400 4400 11000 4400 7500 1875 1875 3750 1875 5000 10000
9962S* 997587 890711 890710 9941 890715 890712 890703 890713
15 57 1500–10000 105–689
890711
890714** 100 378 300–1500
* High-temperature models up to 240° F (115° C) **NBR O-Rings
9941
RUPTURE DISC ASSEMBLY MODEL MAX FLOW MAX RELIEF SETTING
PORTS
GPM LPM PSI
BAR 689
INLET
RELIEF
9921 9920
20 76 20 76
10000 15000
3/8" NPT(M) 3/8" NPT(M)
3/8" NPT(F) 3/8" NPT(F)
1034
TECH TIP Primary and Secondary Relief
www.catpumps.com/troubleshooting-tips-pop-off-valves
Cat Pumps strongly recommends equipping each high-pressure pumping system with primary and secondary safety relief devices to safeguard against over-pressurization. These cost-effective measures help to protect the system from failure, preventing damage to expensive components and minimizing costly downtime. Check out our new Troubleshooting Tips video for critical information on why and when to use a pop-off valve and how to set their pressure properly.
For more information, contact us at (763)780-5440 | info@catpumps.com | www.catpumps.com
Pumps & Accessories Catalog 2024
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