Pressure Cleaning - Accessories - Unloader, Safety & Flow Control Valves

Unloader, Safety & Flow Control Valves

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Unloader, safety, and flow control valves are essential components in any pressure washing system. Unloader valves regulate pressure and allow your pump to bypass water when the trigger is released, while relief and safety valves provide protection against overpressure to safeguard pumps, hoses, and other equipment. Flow regulators play a complementary role by controlling and stabilizing water flow, which is particularly useful in multi-gun setups, chemical applications, and when using attachments that require consistent performance, helping ensure smooth, efficient, and reliable operation.

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Canpump

Canpump Unloader Valve - 4000 psi @ 6.6 US gpm, Easy Start

Chemical injector: Yes

Inlet: 3/4-in Garden Hose Female

Outlet: 3/8-in Female or Quick-Connect Socket

Inlet Banjo Bolt: 1/2-in Male

Outlet Banjo Bolt: 3/8-in Male

MSRP:

Was:

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C$62.00 - C$75.00

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P.A.

SKU: 041010

P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve w/ Knob

Chemical injector: No

Inlet: 3/8-in Female

Outlet: 3/8-in Female

Bypass: 3/8-in Female

MSRP:

Was:

Price Now

C$98.00

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Canpump

SKU: 041021

Adjustable Pressure Safety Valve, 5000 psi, 3/8-in Inlet

Inlet: 3/8-in Male

MSRP:

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C$25.00
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P.A.

SKU: 041017

P.A. VS 220: 3200 psi @ 6.3 US gpm Safety/Relief Valve, 2 Inlet Ports

Inlet: 3/8-in Female

Outlet: 3/8-in Female

MSRP:

Was:

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C$64.00
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Canpump

Canpump Thermal Relief Valve for Hi-Pressure Triplex Pumps

Inlet: 1/4-in Male

Inlet: 3/8-in Male

Inlet: 1/2-in Male

MSRP:

Was:

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C$12.00 - C$14.00

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P.A.

SKU: 042005

P.A. VB 85/310: 4050 psi @ 21 US gpm Unloader Valve

Chemical injector: No

Inlet: 1/2-in Female

Outlet: 1/2-in Female

Bypass: 1/2-in Female

MSRP:

Was:

Price Now

C$175.00
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Mecline

SKU: 042007

Mecline VRT100 High Flow: 5075 psi @ 26.4 US gpm Unloader Valve

Chemical injector: No

Inlet: 1/2-in Female

Outlet: 1/2-in Female

Bypass: 1/2-in Female

MSRP:

Was:

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C$218.00

Out of stock
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P.A.

SKU: 041013

P.A. VB 350: 5075 psi @ 10.5 US gpm Unloader Valve w/ Knob

Chemical injector: No

Inlet: 3/8-in Male

Outlet: 3/8-in Female

Bypass: 1/2-in Female

MSRP:

Was:

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C$180.00
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P.A.

SKU: 042001

P.A. VB 80/400: 5800 psi @ 21 US gpm Stainless-Steel Unloader Valve

Chemical injector: No

Inlet: 1/2-in Female

Outlet: 1/2-in Female

Bypass: 1/2-in Female

MSRP:

Was:

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C$570.00
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Bertolini Pumps

SKU: 041003

Bertolini APR 25: 2500 psi @ 5.5 US gpm Unloader Valve

Chemical injector: No

Inlet: 1/2-in Male

Outlet: 3/8-in Male

Inlet Banjo Bolt: 3/8-in Male

Outlet Banjo Bolt: 3/8-in Male

MSRP:

Was:

Price Now

C$90.00

Out of stock
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Mecline

SKU: 041022

Mecline VRT3 Easy Start: 4060 psi @ 10.5 US gpm Unloader Valve

Chemical injector: No

Inlet: 3/8-in Female

Outlet: 3/8-in Female

Bypass: 3/8-in Female

MSRP:

Was:

Price Now

C$85.00
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Bertolini Pumps

SKU: 041005

Bertolini APR 30: 3000 psi @ 5.5 US gpm Unloader Valve

Chemical injector: No

Inlet: 1/2-in Male

Outlet: 3/8-in Male

Inlet Banjo Bolt: 1/2-in Male

Outlet Banjo Bolt: 3/8-in Male

MSRP:

Was:

Price Now

C$90.00

Out of stock

Nozzle Size	Flow	Operating Pressure Range (psi)
Orifice	Flow rate	362	435	507	580	652	725	797	870	942	1015
0.15 mm (0.006″)	L/min	0.03	0.033	0.036	0.038	0.04	0.043	0.045	0.047	0.049	0.05
0.15 mm (0.006″)	US gpm	0.008	0.009	0.009	0.01	0.011	0.011	0.012	0.012	0.013	0.013
0.20 mm (0.008″)	L/min	0.04	0.044	0.048	0.051	0.054	0.057	0.06	0.062	0.065	0.068
0.20 mm (0.008″)	US gpm	0.011	0.012	0.013	0.013	0.014	0.015	0.016	0.017	0.017	0.018
0.30 mm (0.012″)	L/min	0.068	0.075	0.081	0.086	0.091	0.096	0.101	0.105	0.11	0.114
0.30 mm (0.012″)	US gpm	0.018	0.02	0.021	0.023	0.024	0.025	0.027	0.028	0.029	0.03
0.40 mm (0.016″)	L/min	0.104	0.113	0.123	0.131	0.139	0.146	0.154	0.16	0.167	0.173
0.40 mm (0.016″)	US gpm	0.027	0.03	0.032	0.035	0.037	0.039	0.041	0.042	0.044	0.046
0.50 mm (0.020″)	L/min	0.114	0.125	0.135	0.144	0.153	0.161	0.169	0.176	0.183	0.19
0.50 mm (0.020″)	US gpm	0.03	0.033	0.036	0.038	0.04	0.043	0.045	0.047	0.048	0.05
0.60 mm (0.024″)	L/min	0.138	0.152	0.164	0.175	0.186	0.196	0.205	0.215	0.223	0.232
0.60 mm (0.024″)	US gpm	0.037	0.04	0.043	0.046	0.049	0.052	0.054	0.057	0.059	0.061
0.80 mm (0.032″)	L/min	0.165	0.181	0.195	0.209	0.221	0.233	0.245	0.256	0.266	0.276
0.80 mm (0.032″)	US gpm	0.044	0.048	0.052	0.055	0.058	0.062	0.065	0.068	0.07	0.073
1.00 mm (0.040″)	L/min	0.188	0.206	0.222	0.237	0.251	0.264	0.276	0.287	0.298	0.308
1.00 mm (0.040″)	US gpm	0.05	0.054	0.059	0.063	0.067	0.07	0.073	0.076	0.079	0.081
1.20 mm (0.048″)	L/min	0.207	0.227	0.245	0.262	0.278	0.293	0.307	0.32	0.332	0.343
1.20 mm (0.048″)	US gpm	0.054	0.06	0.065	0.069	0.073	0.077	0.081	0.085	0.088	0.091

Orifice	Contour based angle
0.10 / .004″	19.90°
0.15 / .006″	55.70°
0.20 / .008″	72.50°
0.30 / .012″	74.60°
0.40 / .016″	82.00°
0.50 / .020″	72.50°
0.60 / .024″	91.00°
0.80 / .032″	105.80°
1.00 / .040″	106.90°
1.20 / .048″	114.00°

Unloader, Safety & Flow Control Valves

Bolt-On Unloaders

Thread-On Unloaders

Flow Regulators

Safety & Relief Valves

Canpump Unloader Valve - 4000 psi @ 6.6 US gpm, Easy Start

P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve w/ Knob

Adjustable Pressure Safety Valve, 5000 psi, 3/8-in Inlet

P.A. VS 220: 3200 psi @ 6.3 US gpm Safety/Relief Valve, 2 Inlet Ports

Canpump Thermal Relief Valve for Hi-Pressure Triplex Pumps

P.A. VB 85/310: 4050 psi @ 21 US gpm Unloader Valve

Mecline VRT100 High Flow: 5075 psi @ 26.4 US gpm Unloader Valve

P.A. VB 350: 5075 psi @ 10.5 US gpm Unloader Valve w/ Knob

P.A. VB 80/400: 5800 psi @ 21 US gpm Stainless-Steel Unloader Valve

Bertolini APR 25: 2500 psi @ 5.5 US gpm Unloader Valve

Mecline VRT3 Easy Start: 4060 psi @ 10.5 US gpm Unloader Valve

Bertolini APR 30: 3000 psi @ 5.5 US gpm Unloader Valve

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