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DN20 25 32 40 50 65 80 100 125 150 Pilot Operated Pressure Control Valve

Name: DN20 25 32 40 50 65 80 100 125 150 Pilot Operated Pressure Control Valve
Brand: WEYO AUTO TECH
SKU: V500-ZZHP
Availability: InStock

Product Details

Place of Origin: China

Brand Name: WEYO

Model Number: V500-ZZHP

Payment & Shipping Terms

Minimum Order Quantity: Negotiable

Price: Based on oroiect reauirements

Packaging Details: Customized packaging to protect products

Delivery Time: 7 - 15 days for small orders, 15 - 30 days for large orders

Payment Terms: L/C, T/T

Supply Ability: 5000 units per month for small parts. 1000 units per month for large parts

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Product Details

Product Description

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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    DN20 pilot operated pressure control valve, DN25 pilot operated pressure control valve, DN150 pilot operated pressure regulator
                      

Body Type:	Globe	Valve Size:	DN20,25,32,40,50,65,80,100,125,150 (¾”,1”,1¼”,1½”,2”,2½”,3”,4”,5”,6”)
Pressure Rating:	PN10,16(ANSI Class 150)	End Connection:	Flanged: RF
Flanged Standard:	GB/T 9113.1,JB/T 79.1,HG/T 20592,HG/T 20615,SH 3406,ANSI B16.5	Body & Bonnet Materials:	A216 WCB A351 CF8, A351 CF8M, A351 CF3, A351 CF3M
Trim Materials:	A182 F304, A182 F316, A182 F304L, A182 F316L, PTFE Sealing Surface Or Full Stellite Alloy Overlay Welding, PTFE Embedded Are Available	O-Ring:	Oil Resistance Rubber, PTFE
Bonnet Type:	Standard Type	Plug Type:	Flat Bottom, Unbalanced
Seat Leakage Standard:	GB/T 4213, ANSI B16.104	Leakage:	Class IV, VI (Soft Sealing)
Flow Characteristic:	Quick Open	Regulation Accuracy:	≤ ±5%
Regulation Type:	Outlet Regulation(B), Inlet Regulation(K)	Pressure Setting Range:	0.5~100 KPa
Medium Temperature:	-40~80℃	Pneumatic Diaphragm Actuator:	Acting Type: Direct Acting, Diaphragm Effective Area(cm2 ): 200,280,400 , Diaphragm Materials: NBR, Viton Clip Reinforced Polyester Fabric, Diaphragm Cover Material: Q235,Q235 PTFE Applied

Body Type:	Globe
Valve Size:	DN20,25,32,40,50,65,80,100,125,150 (¾”,1”,1¼”,1½”,2”,2½”,3”,4”,5”,6”)
Pressure Rating:	PN10,16(ANSI Class 150)
End Connection:	Flanged: RF
Flanged Standard:	GB/T 9113.1,JB/T 79.1,HG/T 20592,HG/T 20615,SH 3406,ANSI B16.5
Body & Bonnet Materials:	A216 WCB A351 CF8, A351 CF8M, A351 CF3, A351 CF3M
Trim Materials:	A182 F304, A182 F316, A182 F304L, A182 F316L, PTFE Sealing Surface Or Full Stellite Alloy Overlay Welding, PTFE Embedded Are Available
O-Ring:	Oil Resistance Rubber, PTFE
Bonnet Type:	Standard Type
Plug Type:	Flat Bottom, Unbalanced
Seat Leakage Standard:	GB/T 4213, ANSI B16.104
Leakage:	Class IV, VI (Soft Sealing)
Flow Characteristic:	Quick Open
Regulation Accuracy:	≤ ±5%
Regulation Type:	Outlet Regulation(B), Inlet Regulation(K)
Pressure Setting Range:	0.5~100 KPa
Medium Temperature:	-40~80℃
Pneumatic Diaphragm Actuator:	Acting Type: Direct Acting, Diaphragm Effective Area(cm2 ): 200,280,400 , Diaphragm Materials: NBR, Viton Clip Reinforced Polyester Fabric, Diaphragm Cover Material: Q235,Q235 PTFE Applied

DN20 25 32 40 50 65 80 100 125 150 Pilot Operated Pressure Control Valve

ZZHP Series Pilot-Operated Pressure Control Valve needs no external energy; the medium’s own energy is used as the power source and then introduced into the pilot to control the main valve spool displacement in order to change medium flow, therefore the outlet pressure (B type) or the inlet pressure (K type) remains constant.

Pilot-Operated Pressure Control Valve has the following characteristics:

Pressure set is implemented on the pilot, thus easy, convenient and time-saving. Moreover it can be set at any time under continuous production conditions.

The pressure regulation range is wider than ZZY Self-Operated Pressure Control Valve with particularly large pressure ratio, for example inlet pressure: 0.8MPa, outlet pressure: 50mmH2O, the pressure ratio is up to 1600.

The regulation accuracy is higher than ZZY Self-Operated Pressure Control Valve with large pressure sensing diaphragm effective area, small spring stiffness, particularly sensitive response action, extremely low pressure (50mmH2O) or pressure change can be sensed, smooth device operation, therefore it is suitable for applications requiring high precision control.

No packing construction is adopted to reduce stem friction and obtain small dead zone.

ZZHP-16B is primarily suitable for high inlet pressure (0.2~0.8MPa) and low outlet pressure (0.5~100kPa, for example 50mmH2O) and can replace one ZZYP Self-Operated Pressure Control Valve and one ZZVP Self-Operated Micropressure Control Valve; ZZHP-16K can be used for Nitrogen vent device together with ZZHP-16B (used for Nitrogen supply device). ZZHP-16K alone can replace ZZVP Self-Operated Micropressure Control Valve (inlet pressure ≤ 0.1MPa), however ZZHP-16K Pilot-Operated Pressure Control Valve is not restricted by the above.

Rated Cv, Stroke and Allowable Pressure Drops

Valve size mm(inch)	Port size (mm)	Rated Kv	Rated Cv	Stroke (mm)	Allowable pressure drops(MPa)	Valve size mm(inch)	Port size (mm)	Rated Kv	Rated Cv	Stroke (mm)	Allowable pressure drops(MPa)
20 (¾)	6	0.32	0.37	8	1.6	32 (1¼)	32	12.5	14.5	10	1.6
	15	4	4.6			40 (1½)	40	20	23	10	1.6
	20	5	5.8			50 (2)	50	32	37	12	1.1
25 (1)	6	0.32	0.37	8	1.6	65 (2½)	65	50	58	15	0.4
	15	4	4.6			80 (3)	80	80	93	18	0.4
	20	5	5.8			100 (4)	100	125	145	20	0.6
	25	8	9.3			125 (5)	125	160	186	30
						6 (150)	150	320	371	40

Flow Characteristics

Quick open

Valve Internal Construction

Fig. 1 ZZHP-16B Outlet pressure regulating fig. 2 ZZHP-16K Inlet pressure regulating

(nitrogen supply device) (nitrogen vent device)

Working Principle

Nitrogen supply device construction is shown in figure 1, the fluid, located at the top of the

tank, is introduced through the impulse pipe to the testing unit, the force caused by the fluid on

the testing unit is equilibrium to the preload of the spring. When the pressure inside the tank is

lowered to the setting point of the nitrogen supply device, the balance is broken and the pilot

plug is opened, therefore the main valve plug is opened after the inlet gas goes into the upper

and lower diaphragm cover through the air filter regulator and the throttle valve and then the

nitrogen is supplied into the tank; when the pressure inside the tank is up to the setting point,

the spring preload of the testing unit makes the pilot plug close, then the main valve plug is

also closed thus the nitrogen supplement is stopped.

Nitrogen vent device construction is shown in figure 2, the working principle is basically the

same as nitrogen supply device, the fluid is introduced into the lower diaphragm cover of the

test unit, when the pressure inside the tank is up to the setting point, the pilot plug is opened

then the main valve plug is also opened, the vent begins. When the pressure is lowered to the

setting point, the main valve is closed then the vent ends.

External Dimensions and Weight

公称通径 Valve size mm(inch)	20 (¾)	25 (1)	32 (1¼)	40 (1½)	50 (2)	65 (2½)	80 (3)	100 (4)	125 (5)	150 (6)
A	150	160	180	200	230	290	310	350	400	480
H	640	640	650	650	660	700	700	750	800	800
H1	85	85	100	100	110	140	150	165	200	225
H2	390	390	390	435	435	435	435	435	565	565
ØB	308	308	308	394	394	394	394	394	498	498
重量(kg) Weight	26	26	35	40	50	72	90	114	130	144

Application Example (For Nitrogen Seal Device)

Nitrogen is on the upper end of the refined oil inside the tank, the pressure, usually around

100mmH2O, is controlled by the nitrogen seal device. When the outlet valve opens, the inner tank

level drops in the meantime ZZHP-16B nitrogen supply valve is opened to supply nitrogen into

the tank, until the pressure is up to the setting point; when the inlet valve opens, the level ups, the

nitrogen pressure increases and then ZZHP-16B nitrogen supply valve is closed. ZZHP-16K nitrogen

vent valve is opened under the pressure controller; the nitrogen is released until the pressure is

lowered to the setting point. To ensure the safety of the tank, it shall be provided with breather valve

at the tank top.

Nitrogen supply pressure P2 setting: the setting point P2 is selected, for example 1kPa (100mmH2O),

is adjusted by the pressure setting spring.

Nitrogen vent pressure Po setting: adjust the pressure controller and adjust the pressure setting

spring pre-compression set, Po should be much higher than P2, for example 2kPa (200H2O), to avoid

the frequent open and close.

Breather valve pressure Pb setting: when the nitrogen supply and nitrogen vent pressure is set, to

avoid the frequent open and close, breather valve pressure Pb should be higher than Po, and the

difference between the pressures cannot be too small, for example 3kPa (300mmH2O).

Nitrogen supply pressure P2, nitrogen vent Po and breather valve pressure Pb: Pb>Po>P2.

1. The pressure position of ZZHP-16B nitrogen supply valve should be near the tank.

2. The pressure gauge should be close to the pressure point.

3. ZZYP-16B nitrogen supply valve outlet pipeline should be bigger than inlet pipeline

External Dimensions and Weight

Valve size mm(inch)	20 (¾)	25 (1)	32 (1¼)	40 (1½)	50 (2)	65 (2½)	80 (3)	100 (4)	125 (5)	150 (6)
A	150	160	180	200	230	290	310	350	400	480
H	640	640	650	650	660	700	700	750	800	800
H1	85	85	100	100	110	140	150	165	200	225
H2	390	390	390	435	435	435	435	435	565	565
ØB	308	308	308	394	394	394	394	394	498	498
重量(kg) Weight	26	26	35	40	50	72	90	114	130	144

Application Example (For Nitrogen Seal Device)

Nitrogen is on the upper end of the refined oil inside the tank, the pressure, usually around

100mmH2O, is controlled by the nitrogen seal device. When the outlet valve opens, the inner tank

level drops in the meantime ZZHP-16B nitrogen supply valve is opened to supply nitrogen into

the tank, until the pressure is up to the setting point; when the inlet valve opens, the level ups, the

nitrogen pressure increases and then ZZHP-16B nitrogen supply valve is closed. ZZHP-16K nitrogen

vent valve is opened under the pressure controller; the nitrogen is released until the pressure is

lowered to the setting point. To ensure the safety of the tank, it shall be provided with breather valve

at the tank top.

Nitrogen supply pressure P2 setting: the setting point P2 is selected, for example 1kPa (100mmH2O),

is adjusted by the pressure setting spring.

Nitrogen vent pressure Po setting: adjust the pressure controller and adjust the pressure setting

spring pre-compression set, Po should be much higher than P2, for example 2kPa (200H2O), to avoid

the frequent open and close.

Breather valve pressure Pb setting: when the nitrogen supply and nitrogen vent pressure is set, to

avoid the frequent open and close, breather valve pressure Pb should be higher than Po, and the

difference between the pressures cannot be too small, for example 3kPa (300mmH2O).

Nitrogen supply pressure P2, nitrogen vent Po and breather valve pressure Pb: Pb>Po>P2.

1. The pressure position of ZZHP-16B nitrogen supply valve should be near the tank.

2. The pressure gauge should be close to the pressure point.

3. ZZYP-16B nitrogen supply valve outlet pipeline should be bigger than inlet pipeline.

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