Pressure Relief Valves SPV, SPVF Series Kracht

The pressure relief valve SPV/SPVF is a direct spring sliding piston valve. It is intended for mounting in pipelines and is suitable to safeguard low pressure hydraulic circuits. The pipe connection is to be effected either by SAE-mounting surfaces (3000 psi) or by With worth pipe threads ”G“.

Notes:
- When using strongly aerated media, the valve should preferably be mounted vertical with the setscrew facing down.
- The tank connection T of the valve must not be exposed to under pressure when subject to flow (Q > 0), as in this case the valve cannot be ventilated, possibly resulting in unwanted vibrations and noise. If this is unavoidable, the special solution (S33) provides an alternative.

Application:

Explosion protection – Field of application for the pressure relief valves. The valve is used to secure low pressure hydraulic circuits with various flammable and non-flammable fluids.
They can be used:

• In Zone 2 (Gas-Ex, Category 3 G) in the explosion groups IIA, IIB and IIC
• In Zone 22 (Dust-Ex, Category 3D), in the explosion groups III A and III B at non-conductive dusts with a minimum ignition energy >1mJ
• In Zone 1 (Gas-Ex, Category 2 G) in explosion groups IIA, IIB and IIC
• In Zone 21 (Dust-Ex, Category 2D) in the explosion groups III A and III B at non-conductive dusts with a minimum ignition energy >1mJ
  

Specification:

Product name / Nominal size	SPV  = NG 10
	SPVF = NG 20 ... 80
Construction	Slide valve / directly-operated
	(Poppet valve on request)
Mounting	Pipe connection / panel mounting
Pipe connection	Flange connection ISO 6162-1 (SAE J518)
	Pipe thread ISO 228-1
Fitting position	any, pressure setting screw below preferred
Housing material	EN-GJL-300 (EN-GJS-400-15)
Type setting	Mechanical   Set screw
	Knob
Accessories	Welding flange SAE (3000 psi)
Hydraulic fluids	Hydraulic oils acc. to DIN 51 524/25

Hydraulic Characteristics

Nominal size				10	20/25	32/40	50
Max. flow rate Q		l/min		40	90	450	550
Nom. working pressure		bar		30	30	25	25
Setting range response pressure	pv min	bar		0.5	0.5	0.5	0.5
	pv max	bar		30	40	25	25
Media temperature	NBR	ϑm = --20°C...			90 °C (Design A + E)
	FKM	ϑm = --15°C... 150 °C (Design C + K)
	Copper	ϑm = -- 20 °C... 220 °C (Design B + F)
	Soft iron	ϑm = --40°C... 220 °C (Design D)
Ambient temperature		ϑu	= -- 20 °C...		60 °C (NBR, copper, soft iron)
		ϑu	= -- 15 °C...		60 °C (FKM)

Download Data Sheet: Pressure Relief Valves SPV, SPVF Series

Ref: Krachtcorp.com