KOSCN PV711 Pressure Reducing Valve

The KOSCN PV711 pressure reducing valve stabilizes downstream pressure, reduces system operating pressure, and effectively suppresses pressure pulsation. It features low vibration and stable control performance, providing excellent repeatability and stability in pressure regulation.

Applications
Water Treatment | Solar Energy | Semiconductor | Chemical Industry | Biopharmaceutical | Medical | New Energy | New Materials
Note: This product must not be used as a safety valve.

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Easy Installation and Maintenance

Fully plastic construction for an attractive appearance and excellent corrosion resistance
Easy installation with maintenance-free design
End connections comply with international DIN 8063 standard
Pressure can be adjusted at any time, even during operation

High Safety Performance

Working pressure up to 10 bar
Effectively balances outlet pressure pulsation and reduces pressure peaks
Instrument connection thread with embedded stainless steel insert for enhanced installation strength
Reinforced PTFE rubber composite diaphragm ensures higher pressure resistance

High Flexibility

Wetted materials available in PVC-U, PPH, PP-Natural, PVDF, SUS
Sealing materials available in EPDM and FPM
Connection types: Union ends, flange, or female thread (for stainless steel body only)
Interface standards: DIN, JIS, ANSI
Optional installation of pressure gauge or pressure sensor at valve outlet port
Factory preset working pressure available upon request

Decomposition Components Introduction

No.	Part Name
1	Protective cap
2	Mechanism shell
3	Adjusting screw
4	Limit nut
5	Lead screw nut
6	Spring base
7	Balance ball
8	Regulating spring
9	Underspring base
10	Piston connecting rod
11	Diaphragm block
12	Diaphragm
13	Piston
14	Piston end barrel
15	Valve body
16	Valve body bottom cover

Dimension

d	DN	N	H	h	L	L1	L2	L3	L4	t	V	M
16	10	80	158	33	120	-	126	-	144	14	61	5
20	15	80	158	33	120	228	126	150	144	16	61	5
25	20	107	183	43	150	264	156	180	174	19	79	6
32	25	107	183	43	150	270	156	180	174	22	79	6
40	32	146			204	331	211	230	224	26
50	40	146			204	338	211	230	224	31
63	50	146			204	343	211	230	224	38

Inch	D	d	N	H	h	L	Z	Z1	t	V	M
1/2	13.9	9.5	80	158	33	98.5	92.5	15	14	61	5
3/4	20.5	15.8	80	158	33	121	114.2	15	16	61	5

PVC-U / PVC-C Pressure-Temperature Derating Curve

Below 0 °C, the maximum pressure remains around 10 bar. As temperature increases, pressure resistance decreases—dropping to about 3 bar at 60 °C and approaching 0 bar near 90 °C, beyond which the material is unsuitable for use.

PVDF and PP-H Pressure-Temperature Derating Curve

At around 0 °C, both materials have a maximum pressure rating of 10 bar. PVDF (yellow curve) maintains better pressure resistance at higher temperatures—about 4 bar at 80 °C and usable up to roughly 100 °C. In contrast, PP-H (purple curve) drops to nearly 0 bar around 80 °C, making it more suitable for medium- to low-temperature applications.

Working Pressure and Corresponding Flow Rate

The curve shows the relationship between pressure and flow rate. The starting point represents the set pressure at a flow rate of Q = 0 l/h, while the curve indicates the pressure loss (Δp) as flow rate increases.

DN15

DN20

DN25

DN32

DN40

DN50

Select Code Based on Requirements

KOSCN

KOSCN Industrial Manufacturing (Shenzhen) Co., Ltd., founded in 2005 and headquartered in Shenzhen, China, operates globally with subsidiaries and agent teams. It offers comprehensive pre-sales and after-sales services worldwide. KOSCN has a professional R&D, design, and production team, adhering strictly to ISO9001, ISO14001, and ISO45001 standards to ensure the highest product quality.

KOSCN's products, mainly automated valves for ultra-pure and corrosive systems, are widely used in semiconductor, glass panel, electroplating, wastewater treatment, waste liquid solidification, solar energy, landfill leachate, PCB, metallurgy, steel, ultra-pure water, recycling, chemical, food and beverage, power, paper, biopharmaceutical, and biofermentation industries.

すぐに見積もりを依頼

d	DN	N	H	h	L	L1	L2	L3	L4	t	V	M
16	10	80	158	33	120	-	126	-	144	14	61	5
20	15	80	158	33	120	228	126	150	144	16	61	5
25	20	107	183	43	150	264	156	180	174	19	79	6
32	25	107	183	43	150	270	156	180	174	22	79	6
40	32	146			204	331	211	230	224	26
50	40	146			204	338	211	230	224	31
63	50	146			204	343	211	230	224	38

d	DN	N	H	h	L	L1	L2	L3	L4	t	V	M
16	10	80	158	33	120	-	126	-	144	14	61	5
20	15	80	158	33	120	228	126	150	144	16	61	5
25	20	107	183	43	150	264	156	180	174	19	79	6
32	25	107	183	43	150	270	156	180	174	22	79	6
40	32	146			204	331	211	230	224	26
50	40	146			204	338	211	230	224	31
63	50	146			204	343	211	230	224	38

d	DN	N	H	h	L	L1	L2	L3	L4	t	V	M
16	10	80	158	33	120	-	126	-	144	14	61	5
20	15	80	158	33	120	228	126	150	144	16	61	5
25	20	107	183	43	150	264	156	180	174	19	79	6
32	25	107	183	43	150	270	156	180	174	22	79	6
40	32	146			204	331	211	230	224	26
50	40	146			204	338	211	230	224	31
63	50	146			204	343	211	230	224	38