Danfoss PCVP Data sheet

Data sheet

Pilot-controlled differential pressure controller (PN 16, 25, 40)

PCVP - flow and return mounting, adjustable setting

Description

Pilot-controlled differential pressure controller is a self-acting differential pressure

controller primarily for use in district heating, district cooling or in industrial systems as well. It can be flow and return mounted in applications with and without heat exchanger like large substations and distribution stations.

The controller consist of main controller, installed in main pipe, and pilot controller and with a throttling element, both installed in bypass.

Setting is done on pilot controler.

Throttle valve data can be found on page 10.

Main data1) :

•DN 50-2502)

•kVS 32-630 m3/h

•PN 16, 25, 403)

•Temperature:

-Circulation water/glycolic water up to 30%: 2 … 200°C

•Connections:

-Pilot controller:

ext. thread (weld-on tailpieces) or flange

-Main valve: flange

1)for details see Technical data and Ordering sections

2)smaller DN on request

3)PN 40 on special request

Features:

-Differential pressure controller

-Extremely high control ratio (see Tab.1) as a result of low pilot controller min. flow rate

(kVS value) and high flow rate (kVS) of the main valve

-Small overall dimensions comparing to standard design (especially height)

-Higher valve capacities for DN 150-250 comparing to standard design

-High control stability

-Smooth operation differential pressure controller

Tab. 1

DN	Min. control ratio
50	100 : 1
65	140 : 1
80	220 : 1
100	300 : 1
125	400 : 1
150	400 : 1
200	550 : 1
250	750 : 1

© Danfoss | 2018.04

VD.JA.N3.02 | 1

Data sheet	PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40)

Technical Data

2)On request

3)Stainless steel M. No. 1.4571

4)EPDM

1) Defined by pilot controller

Main valve

Nominal diameter			DN	50		65		80			100		125	150	200		250
kVS value			m3/h	32		50		80			125		160	320	450		630
Cavitation factor z				0.5		0.5		0.45			0.4		0.35	0.3	0.2		0.2
Leakage acc. to standard IEC 534											≤ 0.05% of kVS
Nominal pressure			PN								16, 25, 40
Max. differential pressure	PN 16				16						15			12		10
	PN 25, 40		bar		20
Min. differential pressure											0.5
Min. static pressure											1.5
Medium	VFG 2(1)						Circulation water/glycolic water up to 30%
Medium pH											Min. 7, max. 10
Medium temperature	VFG 21 PN 16, 25, 40										2 … 150 °C
	VFG 2 PN 16, 25, 40										2 … 200 °C2)
Connections	Main controller										Flange
	Pilot controller			Ext. thread (weld-on tailpieces) or flange											Flange
Weight	PN 16 /25		kg	18		27.5		30			58		68	115	185		323
	PN 40					30		32.5			60.5		69	141	253		333
Materials
			PN 16					Grey cast iron EN-GJL-250 (GG-25)
Valve body			PN 25		Ductile cast iron EN-GJS-400-18-LT									Cast steel EN-GP-240-GH
							(GGG-40.3)								(GS-C 25)
			PN 40					Cast steel EN-GP-240-GH (GS-C 25)2)
Valve seat						Stainless steel M. No. 1.4021								Stainless steel M. No.
															1.4313
Valve cone	VFG 2(1)					Stainless steel M. No. 1.4404								Stainless steel M. No.
															1.4021
Sealing	VFG 21										EPDM
	VFG 2										Metal
Pressure relieve system								Bellows	3)					Diaphragm4) (T			150 °C)
														Bellows3) (T		300 °C)
															max
															max

Main actuator

For main valve	DN	50 - 125		150 - 250
Actuator size	cm2	250		630
Max. operational pressure		25		16, 25
	bar
Flow restrictor differential pressure ∆pb1)		0.2/0.5
Diff. pressure setting ranges1)		0.2-1.0/0.3-2.0/1-5/3-12
Weight	kg	11		24
Materials
Housing		Stainless steel M. No. 1.0338
Control diaphragm		EPDM
Impulse tube		Stainless steel tube Ø10 × 0.8 mm
Nr. of throttle valves (mounted on impulse tubes)		1		2

Trottling element

For main valve	DN	50 - 125		150 - 250
Size of throttling element	DN	25		40
Connections		Welded end		Flange
Max. operational pressure		25
Weight	kg	3.2		6.6
Materials
Body material		Red bronze, M. No. 2.1090
Impulse tube		Stainless steel tube Ø10 × 0.8 mm

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© Danfoss | 2018.04

Data sheet	PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40)

Ordering

Example 1:

Pilot-controlled differential pressure controller; DN 100; kVS 125; PN 16;

setting range 0.2-1.0 bar; Tmax 150 °C; flange;

- 1× PCV-VFG 21 DN 100 Code No.: 003G1573

- 1× AVP DN 25

Code No.: 003H6319

- 1× Weld-on tailpieces DN 25 Code No.: 003H6910

- 1× Mounting set for Impulse tube Code No.: 003G1599

DN 50-125

PCV-VFG 21 - Main controller, throttling element, throttle valve, impulse tubes

	DN	kVS	Tmax	PN	Connection	Δpmax	Code No.
	(mm)	(m3/h)	(°C)			(bar)
	50	32					003G1626
	65	50					003G1558
	80	80	150	16	Flange EN 1092-2	15	003G1559
	100	125					003G1573
	125	160					003G1574
	50	32					003G6707
	65	50					003G1568
	80	80	150	25	Flange EN 1092-2	15	003G1569
DN 25	100	125					003G1523
	125	160					003G1524
			Copper		Ø 6 × 1 × 3000 mm
	Impulse tube				Ø 10 × 1 × 1500 mm
			Stainless steel		Ø 10 × 0.8 × 1500 mm

1)Contains accessories for remounting the impulse tube on the pilot controller from internal connection (factory delivered) to external connection.

Pilot controller AVP

DN

kVS

Tmax

PN

Connection

Δp setting range

Δpmax

Code No.

(mm)

(m3/h)

(°C)

(bar)

(bar)

Cylindr. ext.

0.2-1.0

003H6319

0.3-2.0

003H6329

25

8.0

150

25

thread acc. to

G 1¼ A

20

1-5

DIN ISO 228/1

on request

3-12

Weld-on tailpieces DN 25

003H6910

Mounting set for impulse tube1)

003G1599

1) Contains accessories for remounting the impulse tube on the pilot controller from internal connection (factory delivered) to external connection.

DN 150-250

PCV-VFG 21 - Main controller, throttling element, throttle valves, impulse tubes

DN	kVS	Tmax	PN	Connection	Δpmax	Code No.
(mm)	(m3/h)	(°C)			(bar)
150	320				12	003G1505
200	450		16		10	003G1506
250	630					003G1507
		150		Flange EN 1092-2
150	320				12	003G1525
200	450		25		10	003G1526
250	630					003G1527
DN 40				Ø 6 × 1 × 3000 mm
		Copper
Impulse tube				Ø 10 × 1 × 1500 mm
		Stainless steel		Ø 10 × 0.8 × 1500 mm

AVP

DN

kVS

Tmax

PN

Connection

Δp setting range

Δpmax

Code No.

(mm)

(m3/h)

(°C)

(bar)

(bar)

0.2-1.0

003H6373

40

20

150

25

Flange EN 1092-2

0.3-2.0

16

003H6379

1-5

on request

3-12

Mounting set for Impulse tube1)

003G1599

© Danfoss | 2018.04

VD.JA.N3.02 | 3

Data sheet	PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40)

Ordering (continuous)

Example 2:

Pilot-controlled differential pressure controller; DN 150; kVS 320; PN 16;

setting range 0.2-1.0 bar; Tmax 150 °C; flange;

-1× PCV-VFG 21 DN 150 Code No.: 003G1505

-1× AVP DN 40

Code No.: 003H6373

- 1× Mounting set for impulse tube Code No.: 003G1599

1)At temperatures above 150 °C only with seal pots (see Accessories)

DN 150-250

PCV-VFG 2 - Main controller, throttling element, throtlle valves, seal pots, impulse tubes

	DN	kVS	Tmax	PN	Connection	Δpmax	Code No.
	(mm)	(m3/h)	(°C)			(bar)
	150	320				12
	200	450		16		10	on request
	250	630
	150	320				12
	200	450	200	25	Flange EN 1092-2	10	on request
	250	630
	150	320				12
DN 40	200	450		40			on request
						10
3.0 l  (2×)	250	630
	Impulse tube		Copper		Ø 10 × 1 × 1500 mm
			Stainless steel		Ø 10 × 0.8 × 1500 mm

VFG 2 Valves (metallic sealing cone)

DN	kVS		Tmax.	Connections		Code No.
(mm)	(m3/h)		(°C)		PN 16	PN 25	PN 40
40	20	150	2001)	Flanges acc. to EN 1092-1	065B2392	065B2405	065B2415

AFP / AFP-9 Actuators

	Type	∆p setting range	for DN	Code No.
		(bar)
		0.15-1.5		003G1016
	AFP	0.1-0.7	15-250	003G1017
		0.05-0.35		003G1018

1)Seal pot has to be used on impulse tubes always when Tmax ≥ 150 °C

2)Consist of a nipple, compression ring and nut

3)Impulse tubes on T>150 °C or PN> PN 16 should be of stainless steel

Accessories

			Type designation	Description	Connections	Code No.
				- 1× Copper tube Ø10 × 1 × 1500 mm
			Impulse tube set AF3)	- 1 × compression fitting for imp. tube	-	003G1391
				connection to pipe (G 1/4)
				- 2 × socket
			Seal pot V11)	Capacity 1 liter; with compression fittings	-	003G1392
				for imp. tube Ø10
			Compression fitting2)	For impulse tube Ø10 connections to	G 1/4	003G1468
				controller
			Throttle valve-PCV	Regulating and shut-off device	-	065Z1502

Service kits AVP

	Type designation	DN	kVS	Code No.
		(mm)	(m3/h)	AVP return	AVP flow
			1.6	003H6863	003H6871
		15	2.5	003H6864	003H6872
	Valve insert		4.0	003H6865	003H6873
		20	6.3	003H6866	003H6874
		25	8	003H6867	003H6875

	32 / 40 / 50	12.5 / 20 / 25	003H6868	003H6876
Type designation	Δp setting range		AVP return	AVP flow
		(bar)
Actuator with adjustable		0.2-1.0	003H6829	003H6834
handle (AVP)		0.3-2.0	003H6830	003H6835

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© Danfoss | 2018.04