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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P.A.

SKU: 043812

P.A. VB 135: 2300 psi @ 6.5 US gpm Bolt-On Unloader Valve

Chemical injector: No

Inlet: 1/2-in Female

Outlet: 3/8-in Male

Inlet Banjo Bolt: 1/2-in Male

Outlet Banjo Bolt: 3/8-in Male

MSRP:

Was:

Price Now

C$110.00
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P.A.

SKU: 041025

P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve without Knob

Chemical injector: No

Inlet: 3/8-in Female

Outlet: 3/8-in Female

Bypass: 3/8-in Female

MSRP:

Was:

Price Now

C$87.00

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P.A.

SKU: 500118

P.A. RF1: Flow Regulator, 3650 psi @ 8 US gpm, 1/4-in Inlet/Outlet

Inlet: 1/4-in Male

Outlet: 1/4-in Female

MSRP:

Was:

Price Now

C$79.00
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P.A.

SKU: 042077

P.A. VB 160/280: 4050 psi @ 42 US gpm Unloader Valve, 303 Stainless Steel

Chemical injector: No

Inlet: 3/4-in Female

Outlet: 3/4-in Female

Bypass: 3/4-in Female

MSRP:

Was:

Price Now

C$970.00

Only 2 in stock
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P.A.

SKU: 042028

P.A. VB 26: 4050 psi @ 21 US gpm Unloader Valve, 316 Stainless Steel, Viton O-rings

Chemical injector: No

Inlet: 1/2-in Female

Outlet: 1/2-in Female

Bypass: 1/2-in Female

MSRP:

Was:

Price Now

C$980.00

Only 2 in stock
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P.A.

SKU: 042008

P.A. VB 8: 3200 psi @ 8 US gpm Unloader Valve with PR16 Micro Switch

Chemical injector: No

Inlet: 3/8-in Male

Outlet: 3/8-in Female

Bypass: 3/8-in Female

MSRP:

Was:

Price Now

C$157.00

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

P.A. VB 135: 2300 psi @ 6.5 US gpm Bolt-On Unloader Valve

P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve without Knob

P.A. RF1: Flow Regulator, 3650 psi @ 8 US gpm, 1/4-in Inlet/Outlet

P.A. VB 160/280: 4050 psi @ 42 US gpm Unloader Valve, 303 Stainless Steel

P.A. VB 26: 4050 psi @ 21 US gpm Unloader Valve, 316 Stainless Steel, Viton O-rings

P.A. VB 8: 3200 psi @ 8 US gpm Unloader Valve with PR16 Micro Switch

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