Danfoss VRH 5, VRH 30, VRH 60, VRH 120 Data sheet

Data sheet

Pressure relief valve

VRH 5 / VRH 30 / VRH 60 / VRH 120

hpp.danfoss.com

Data sheet | Pressure relief valve, type VRH 5, VRH 30, VRH 60 and VRH 120

Table of Contents

Contents

1. Introduction ............................................................................2

2. Features ................................................................................2

3. Variants.................................................................................2

4. Technical data ..........................................................................3

5. Flow ....................................................................................3

5.1 VRH 5 Max. ow 5 l/ min. ................................................................3

5.2 VRH 30 Max. ow 30 l/min. ..............................................................4

5.3 VRH 60 Max. ow 60 l/min. ..............................................................4

5.4 VRH 120 Max. ow 120 l/min. ............................................................5

5.5 VRH 120 F Max. ow 120 l/min............................................................5

6. Mounting ...............................................................................6

7. Operation...............................................................................6

8. Dimensions .............................................................................7

9. Spare parts .............................................................................8

1. Introduction

2. Features • Excellent functional characteristics.

3. Variants

The relief valve is used for protecting the compo­nents of a system against overload as a result of a
pressure peak.
Further, the valve is designed for controlling/
limiting the system pressure by draining o the
surplus water from the pressure side.

• Surface easy to clean.

• Corrosion-proof parts (stainless steel,
AISI 304, W. No. 1.4301).

The valves are available in four sizes:

• 5 l/min.

• 30 l/min.

• 60 l/min.

• 120 l/min.

The valve is designed for tap water, i.e. without
additives of any kind to the medium.
(EU-drinking water directive 98/83/EC).

Standard versions made of rustproof steel AISI
304/W. No. 1.4301. Upon request also available in
versions made of stainless steel AISI 316L/W No.

1.4401
The relief valves are available with dierent
pressure ranges.

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0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

0 1 2 3 4 5

P [Bar]

Q [l/min]

Data sheet | Pressure relief valve, type VRH 5, VRH 30, VRH 60 and VRH 120

4. Technical data

Setting
screw
(min. to
max.)
mm
(inch)

Typ e Code no.

Pressure
range
barg (psig)

Flow (max.)
l/min.
(gpm)

Media and
ambient
tempera­ture
°C (°F)

Internal leakage
20% below
max.. setting
pressure
l/min. (gpm)

Weight
kg (lbs)

VRH 5 180G 0034

VRH 5 CA1)180G0033

VRH 30 180G0030

VRH 30 180G0029

VRH 30 180G0031

VRH 30 CA1)180G0032

VRH 60 180G0002

VRH 60 180G0003

VR H 120 180G0020

VR H 120 180G0021

VRH 120 F2)180G0035

1)

Cartridge version

2)

Fire ghting version - recommended inspection after 500 hours of operation

30 -120
(435-1740 )

30 -120
(435-1740 )

25 -140
(362-2030)

10- 40
(145 -580 )

45-210
(652-3045)

25 -140
(362-2030)

25-80
(3 62-116 0)

80 -140
(1160-2030)

25-80
(3 62-116 0)

80 -140
(1160-2030)

80 -140
(1160-2030)

5.3
(0.2)

5.3
(0.2)

5.3
(0.2)

5.3
(0.2)

5.3
(0.2)

5.3
(0.2)

5
(1.3)

5
(1.3)

30
(7. 9)

30
(7. 9)

30
(7. 9)

30
(7. 9)

6.2
(0.24)60(15. 8)

6.2
(0.24)60(15. 8)

7.3
(0.28)

7.3
(0.28)

7.3
(0.28)

120
(31.7)

120
(31.7)

120
(31.7)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

50
(122)

up to 0.3
(up to 0.08)

up to 0.3
(up to 0.08)

up to 0.3
(up to 0.08)

up to 0.3
(up to 0.08)

up to 0.3
(up to 0.08)

up to 0.3
(up to 008)

up to 1.0
(up to 0.3)

up to 1.0
(up to 0.3)

up to 1.0
(up to 0.3)

up to 1.0
(up to 0.3))

up to 1.0
(up to 0.3)

0.62
(1.5)

0.62
(1.5)

0.62
(1.5)

0.62
(1.5)

0.62
(1.5)

0.62
(1.5)

1.3
(2.4)

1.3
(2.4)

2.8
(6.2)

2.8
(6.2)

2.8
(6.2)

5. Flow 5.1 VRH 5 Max. ow: 5 l/min.
Pressure setting range: 30-140 barg (435-1740 psig)

© Danfoss | DCS (im) | 2020.03

30 to 120

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Data sheet | Pressure relief valve, type VRH 5, VRH 30, VRH 60 and VRH 120

5.2 VRH 30 Max. ow: 30 l/min.
Pressure setting range: 10-40 barg, 25-140 barg, 45-210 barg
(145-180 psig, 362-2030 psig, 652-3045 psig)

10 - 40

5.3 VRH 60 Max. ow: 60 l/min.
Pressure setting range: 25-80 barg, 80-140 barg
(362-1160 psig, 1160-2030 psig)

© Danfoss | DCS (im) | 2020.03

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0

20

40

60

80

100

120

140

160

180

0 20 40 60 80 100 120

P [Bar]

Q [l/min]

Data sheet | Pressure relief valve, type VRH 5, VRH 30, VRH 60 and VRH 120

5.4 VRH 120 Max. ow: 120 l/min.
Pressure setting range: 25-80 barg, 80-140 barg
(362-1160 psig, 1160-2030 psig)

5.5 VRH 120F Max. ow: 120 l/min.
Pressure setting range: 80-140 barg
(1160-2030 psig)

80 to 140

© Danfoss | DCS (im) | 2020.03

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Data sheet | Pressure relief valve, type VRH 5, VRH 30, VRH 60 and VRH 120

6. Mounting The valve is mounted in-line and xed by means

7. Operation

of the system’s piping or fastened (only VRH 120)
by means of the two 8.4 mm holes in the valve.

It is important that valve is bleed to avoid noise
and therefore must the valve be mounted in the
correct position - please see drawing

Starting up

To ensure stable working conditions for the valve
it is very important to bleed the valve during
starting up.

Noise level

Since the valve typically is mounted in-line or on
a frame, the noise level can only be determined
for the complete system, It is therefore very
important that the valve is mounted correctly on
a frame to minimize vibrations and noise.

The noise level is inuenced by:

• Mounting position of the valve is important to

ensure a good bleeding of valve.

• Sucient bleeding of the valve.

• High pressure generates more noise that low

pressure.

• Rigid mounting of the valve generates mor

noise than exible mounting.

• Pipe mounting direct to the valve increases

the noise level compared to a exible hose
connection.

Filtration

We strongly recommend that you always use
precision depth lter cartridges in the system,
rated 10 μm abs. β10 ≥ 5,000. or better.

Corrosion and frost protection

If the valve is exposed to temperature below
freezing, it must be protected against freezing.
Danfoss recommends DOWCAL N or Zitrec FC
antifreezes both being biologically degradable
Mono Propylene Glycol (MPG).

© Danfoss | DCS (im) | 2020.03

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Data sheet | Pressure relief valve, type VRH 5, VRH 30, VRH 60 and VRH 120

8. Dimensions

Typ e A B C D E F G1G2H J K L M N O P R

VRH 5 109.6 89.2 AF4 AF13 98.2 33.5 16. 8 18 42 G3/8 - 25 10 36 - - 12

VRH 30 109.6 89.2 AF4 AF13 98.2 33.5 16.8 18 42 G3/8 - 25 10 36 - - 12

VRH 60 151 117 AF5 AF19 129 42.5 21.2 21.2 55.5 G1/2 - 33 14 45 - - 21.5

VR H 120 202 165.5 AF8 AF24 182.5 60 30 30 75 G3/4 43 46.5 15 65 Ø8.4 20 30.4

VR H 120 F 202 165.5 AF8 AF24 182.5 60 30 30 75 G3/4 43 46.5 15 65 Ø8.4 20 30.4

8.1 VRH 5, VRH 30, VRH 60 and VRH 120

8.2 VRH 5 CA and VRH 30 CA

© Danfoss | DCS (im) | 2020.03

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9. Spare parts

Valve size Description Code no.

VRH 5 Valve seat and cone kit 25-100 barg (362-1450 psig) 180G4 018

VRH 5 Seal and spring kit 180G4019

VRH 30 Valve seat and cone kit [pressure range 10-40, 25-140 barg (145-580, 362-2030 psig)] 180G4000

VRH 5/30 Guide and guide pin kit 180G4001

VRH 30 Seal and spring kit [pressure range 10-40 barg (145-580 psig)] 180G4002

VRH 5/30 To ol kit 180G4003

VRH 30 Seal and spring kit [pressure range 25-140, 45-210 barg (362-2030, 652-3045 psig)] 180G4004

VRH 30 Valve seat and cone kit [pressure range 45-210 barg (652-3045 psig)] 180G4005

VRH 60 Valve seat and cone kit [pressure range 10-140 barg (145-2030 psig)] 180G4006

VRH 60 Guide and guide pin kit 180G4007

VRH 60 Seal and spring kit [pressure range 10-40 barg (145-580 psig)] 180G4008

VRH 60 Seal and spring kit [pressure range 25-60 barg (362-1160 psig)] 180G4009

VRH 60 Seal and spring kit [pressure range 80-140 barg (1160-2030 psig)] 180G4010

VRH 60 Tool kit 180G4011

VRH 120 Valve seat and cone kit [pressure range 25-140 barg (362-2030 psig)] 180G4012

VRH 120 Guide and guide pin kit 180G4013

VRH 120 Seal and spring kit [pressure range 25-80 barg (362-1160 psig)] 180G4014

VRH 120 Seal and spring kit [pressure range 80-140 barg (1160-2030 psig)] 180G4015

VRH 120 To ol kit 180G4016

VRH 120 F Valve seat and cone kit [pressure range 80-140 barg (1160-2030 psig)] 180G4020

9.1 Recommendation for build in a VRH 5/30 CA

Danfoss A/S

High Pressure Pumps
DK-6430 Nordborg
Denmark

Danfoss ca n accept no respons ibility for pos sible errors in ca talogues, bro chures and other pr inted material. Da nfoss reserves t he right to alter its p roducts with out notice.
This also a pplies to produc ts already on ord er provided that su ch alterations ca n be made without su bsequential cha nges being nece ssary in speci cations alread y agreed.
All trade marks in this mate rial are proper ty of the respec tive companies . Danfoss and the Dan foss logotyp e are trademark s of Danfoss A/S. Al l rights reserv ed.

© Danfoss | DCS (im) | 2020.03

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