[JRV-ST13, 21]Reducing Valve (DIRECT ACTING TYPE) Old Model: JKRD-10,20 _减压阀_JOKWANG_阀门产品

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[JRV-ST13, 21]Reducing Valve (DIRECT ACTING TYPE) Old Model: JKRD-10,20

This is a direct-operated pressure reducing valve for low pressure or small capacity at the construction equipment of plant equipment.

详细描述

■ FEATURES

This is a direct-operated pressure reducing valve for low pressure or small capacity at the construction equipment of plant equipment.
1. Small size and light weight helps an easy handling and its simple structure make an easy maintenance.
2. JRV-ST13 type has a wide adjusting range and maintenance a stable flow control.
3. JRV-ST21 has a large diaphragm of effective surface and the setting pressure is operating accurately.

■ MATERIAL

NO	PART NAME	JRV-ST13	JRV-ST21
1	Body	CAST IRON	CAST CARBON STEEL
2	Bonnet	CAST IRON	CAST CARBON STEEL
3	Disc	SYNTHETIC RUBBER	SYNTHETIC RUBBER
4	Seat	STAINLESS STEEL	STAINLESS STEEL
5	Stem	STAINLESS STEEL	STAINLESS STEEL
6	Diaphragm	SYNTHETIC RUBBER	SYNTHETIC RUBBER
7	Spring	CARBON STEEL	CARBON STEEL
8	Adjust Screw	BRASS	BRASS
9	Cap	CAST IRON	CAST IRON
10	Plug	BRASS	STAINLESS STEEL
1.INLET PRESSURE		MAX 10 kgf/㎠{1.0MPa}	MAX 20 kgf/㎠{2.0MPa}
2.OUTLET PRESSURE		0.35~0.4 kgf/㎠ {0.035~0.04MPa}	0.1~ 1 kgf/㎠ {0.01~0.1MPa}
3.MAX REDUCING RATIO		15 : 1	20 : 1
4.WORKING TEMP		Max 80 ℃	Max 80℃
5.WORKING FLUID		A.NG.NL	A. NG.NL
6.CONNECION		PT Screwed	PT Screwed

Fluid symbol
1. A: AIR
2. NG: Noncorrosive Gas
3. NL : Noncorrosive Liquid

*Note
1. Minimum differential pressure: 0.2kgf/㎠ {0.02MPa}
2. Disc Seat allowable leakage: Below 0.05% of rated capacity
3. Body Hydro. test JRV-ST13 : 15kgf/㎠{1.5MPa}, JRV-ST21 : 30kgf/㎠{3.0MPa}
4. Fluid viscosity for liquid: less than 150cSt
* Model JRV-ST21 is available to produce until 0.01~0.1kgf/㎠ of the secondary pressure depending on ordering.
■ Dimensions (Unit: mm)

MODEL	JRV-ST13			JRV-ST21
SIZE	15A	20A	25A	15A	20A	25A
d	PT ½" "	PT ¾" "	PT 1" "	PT ½"	PT ¾" "	PT 1" "
L	100	110	110	123	123	123
H₁	47	49	51	64	64	64
H	173	180	180	250	250	250
D	180	180	180	270	270	270

*Flange types are available upon request. (Model JRV-SF13 L:260, Model JRV-SF22 L: 350 )