Self operated pressure regulating valve (hereinafter referred to as pressure valve) is an energy-saving product that does not require external energy and relies solely on the pressure changes of the regulated medium to automatically regulate pressure. It has comprehensive functions of measurement, execution, and control. Widely applicable to industrial sectors such as petroleum, chemical, metallurgical, and light industry, as well as urban heating and heating systems. This product is suitable for pressure control devices for non perishable media such as liquids, gases, and vapors (with a maximum temperature of 350 ℃).

Model specifications

category	Pressure control regulating valve			Differential pressure control regulating valve
	Rear pressure regulating valve and front pressure regulating valve			Close the differential pressure rising valve and open the differential pressure rising valve
	Hard seal, soft seal, hard seal, soft seal			Hard seal, soft seal, hard seal, soft seal
model	V230 D01 V231 D01 V230 D02 V231 D02			V230 D03 V231 D03 V230 D04 V231 D04
specifications	DM15-250

Nominal diameter DN (mm)		15	20	25	32	40	50	65	80	100	125	150	200	250
Kvs value		3.2	5	8	12.5	20	32	50	80	125	320	320	450	630
z value		0.6	0.6	0.6	0.55	0.55	0.5	0.5	0.45	0.4	0.3	0.3	0.2	0.2
PN16 maximum pressure difference △ P (MPa)		1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.2	1.2	1.0	1.0
PN40 maximum pressure difference △ P (MPa)		2.0	2.0	2.0	2.O	2.0	2.0	2.0	2.0	2.0	1.2	1.2	1.0	1.0
Maximum operating temperature	V230 V231	Liquid ≤ 140 ℃, gas ≤ 80 ℃
	V230	Equipped with isolation tank ≤ 200 ℃										≤300℃
		Equipped with isolation tank and heat sink ≤ 350 ℃
Allowable leakage rate (under specified experimental conditions)	V230	4 × 10-4 × rated capacity of valve
	V231	10 bubbles/min 20 bubbles/min 40 bubbles/min
Pressure balancing component
Corrugated pipe		Rolling diaphragm
nominal pressure		PN16（1.6Mpa），PN40（4.0Mpa）
Valve body material**		PN16 cast iron (working temperature ≤ 200 ℃); PN40： Cast steel (working temperature ≤ 350 ℃)
Valve core material		Stainless steel, soft seal made of rubber

Maximum work pressure***

Nominal pressure, pay attention to △ Pmax!		Technical parameters of DA3/DA4 actuators	Effective area	250	630	32*	80*	250	630
32*
		80*	Pressure setting range (MPa)	0.8-1.6	0.1-0.6	0.015-0.15	0.005-0.035	1.0-1.6	0.1-0.5
		0.015-0.12	0.005-0.035	0.3-1.2		0.05-0.3	0.01-0.07	0.3-1.1
0.05-0.25		0.01-0.06	The minimum pressure difference △ Pmin (MPa) for the normal operation of the safety pressure valve	≥0.05	≥0.04	≥0.01	≥0.005	≥0.05	≥0.04
≥0.01		3.0	1.25	0.4	0.15	3.0	1.25	0.4	0.15
≥0.005		Maximum allowable pressure difference between upper and lower membrane chambers (MPa)
		material
Film cover: galvanized steel plate		Diaphragm: EPDM or FKM clamp iron**
Control pipelines and joints		Copper or steel pipe 10 × 1; Card sleeve connector R1/4 '

Set value deviation

±8%

*DN150-250 cannot meet the set value, and a commander operated self operated pressure valve (model V230/V231D or V230/V231D13) can be selected. EPDM is suitable for water, steam, and gas media, while FKM is suitable for oil, water, steam, and gas media. The type of media should be specified when ordering. Suitable actuators and control valves can be selected according to different pressure setting ranges to form a pressure regulating valve.
Ordering Notice: Please fill in the "Specification Sheet" or indicate the following content when placing an order:
1. Product model
2. Nominal pressure
3. Nominal diameter and rated flow coefficient Kv
4. Signal pressure and spring range
5. Traffic characteristics
6. Valve switching method
7. Working temperature range of the medium
8. Valve body and valve core materials