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Residual Pressure Relief Valve SMC Type 1/8 1/4′′ NPT Port Adjustable Pressure Release for Hydraulic/Pneumatic Systems (CE/ISO Certified)

Residual Pressure Relief Valve, SMC Type Vhs20-01A Vhs20-02A, 1/8, 1/4, 3/8, 1/2, 3 /4, 1′′ NPT Port, Adjustable Pressure Release for Hydraulic/Pneumatic Systems (CE/ISO Certified)

Residual Pressure Relief Valve SMC Type 1/8 1/4′′ NPT Port Adjustable Pressure Release for Hydraulic/Pneumatic Systems (CE/ISO Certified)


Material:	Aluminum Aluminum alloy
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The Residual Pressure Relief Valve is a critical safety component designed to automatically release residual pressure in hydraulic or pneumatic systems, ensuring operational safety and preventing equipment damage caused by overpressure. Ideal for industrial, automotive, and energy applications, this valve guarantees reliable pressure management in high-demand environments.

Model:
VHS20-01A
Brand:
WAALPC
Code:
8481400000

Product Description

1. Enhanced Safety & Risk Mitigation

Automatically vents residual pressure post-system shutdown, eliminating hazards during maintenance or component replacement. Prevents accidental activation of equipment caused by trapped pressure.

2. Wide Compatibility & Versatility

Supports multiple port sizes (1/4", 3/8", 1/2") and thread standards (NPT, BSP) for seamless integration into existing pipelines. Suitable for hydraulic systems, compressed air lines, oil/gas pipelines, and industrial machinery.

3. Zero Residual Pressure Assurance

Ensures complete pressure drainage, protecting seals, hoses, and valves from stress damage. Reduces downtime by enabling safe and immediate maintenance.

Technical Parameters

ORDERING CODE

DATA SHEET

Model		VHS20	VHS30	VHS40	VHS40-06	VHS50
Working medium		Clean air (40um filteration)
Working temperature		-5 to 60℃ (No freezing)
Proof pressure		1.5Mpa
Working pressure range		0.1 to 1.0Mpa
Handle switching angle		90℃
Paint color (Standard)		Handel: Red, Body: White
Weight	A(Handle, bonnet: Flame resistant PBT)	76g	127g	247g	293g	532g
	B(Handel, bonnet: Aluminum)	92g	156g	301g	349g	630g

OPTION/ACCESSORY TYPE

Pressure relief 3 port valve	Spacer part no.	Spacer with bracket part no.	Applicable air preparation equipment
VHS20	Y200-A	Y200T-A	AC20-A, B
VHS30	Y300-A	Y300T-A	AC25-A, B, AC30-A, B
VHS40	Y400-A	Y400T-A	AC40-A, B
VHS40-06	Y500-A	Y500T-A	AC40-06A, B
VHS50	Y600-A	Y600T-A	AC50-B, AC55-B, AC60-B

*New VHS series compatible with old spacer Y200(T) to Y600(T)

DIMENSIONS

Pressure relief valve

Model	Standard specifications
	P1	P2	A	B	C	D	E	F		G	H	I	J	K	L	M
	P1	P2	A	B	C	D	E	A type	B type	G	H	I	J	K	L	M
VHS20	1/8, 1/4	1/8	66.4	22.3	40	37.5	14	46.6	47.2	33.6	28	43	24	4.5	14.8	9
VHS30	1/4, 3/8	1/4	80.3	29.4	53	49	19	52		38	30	49	30	4.5	19	9
VHS40	1/4, 3/8, 1/2	3/8	104.9	38.5	70	63	22	58		44	36	63	38	5.5	24	10
VHS40-06	3/4	1/2	110.4	42	75	63	22	58		44	44	63	43	5.5	26	10
VHS50	3/4, 1	1/2	134.3	53	90	76	26	76		61	53	81	50	6.5	31	12

Model	Options specifications
	With bracket										Built-in silencer
	N	Q	R	S	T	U	V	W	X	Y	AA	BB
VHS20	5.4	8.4	27	40	75.4	31.3	25.3	53.3	30	2.3	3	12
VHS30	6.5	10	36.5	53	90.9	40	33	67	41	2.3	3	14
VHS40	8.5	19	43.5	70	119.4	53	44	79	50	2.8	3	19
VHS40-06	8.5	19	43.5	70	123.4	55	46	79	50	2.8	4	22
VHS50	11	27.5	49.5	90	152.3	71	60	108	70	3.2	4	22

Specification Download

WAAL-VHS Series Pressure Relief 3 Port Valve with Locking Holes.pdf

Superiority

Why choose us? What can we do for you?

♦ Founded in 2011 and professional experienced in the field of producing pneumatic products for over 13+ years.
♦ We have strong production capacity, over 100000 pcs/month.
♦We have rich experience for offering OEM/ODM service
♦ We have strict quality control process with quick response of after sales service.
♦ Management system certification : ISO9001,CE, ROHS
♦ We have 10+ technical experts for researching and developing.
♦ Sales network expands from domestic sales to all over the world.