5.07/1

Hydro Pneumatic Press SystemsFor ‘PET’ Stretch Blow Moulding Machines

Typical Automatic Stretch Blow

Moulding Machine for ‘PET’ Bottles

Valve Regulator Assembly

Cushion

(Decelaration)

Solenoid Valves

Single & Dual

Blow Solenoid Valves

Open-Close System with

Decelaration Valve

Hydro Pneumatic Mould

Stretch Pin CylinderNeck Sealing Cylinder

with Hollow Shaft

General Layout of Pneumatic System for Stretch B

low M

oulding

FIG. 1

SERIE

S ‘F

M’ STANDARD P

NEUMATIC

CYLIN

DER F

OR S

TRETCH P

INS

SERIE

S ‘CH

’ HOLLOW

SHAFT

PNEUMATIC

CYLIN

DER F

OR S

EALIN

GSMALL M

OUTH C

ONTAIN

ERS

NON R

ETURN

VALVE

CUSHIO

N S

OLENOID

VALVE

SERIE

S ‘X

’ HYDRO P

NEUMATIC

SYSTEM

FOR M

OULD O

PEN C

LOSE &

LOCK

DUAL P

RESSURE

BLOW

SOLENOID

VALVE

HIG

H P

RESSURE R

EGULATOR

2SET 15 T

O 30 K

g/cm

235 T

O 40 K

g/cm2

7 T

O 9 K

g/cm

LOW

PRESSURE R

EGULATOR

2SET T

O 6 K

g/cm

L.P

. IN

H.P

. IN

CYL

EXH

A

DC

B

D‘X’

‘X’

BC

A

SERIE

S ‘Z

’ HYDRO P

NEUMATIC

SYSTEM F

OR S

EALIN

G W

IDE

MOUTH C

ONTAIN

ERS

5.07/2

SCREW

WIT

H LOCKNUT

TO A

DJU

ST D

ECELARATIO

N

1.

(a)

(a)

5.07/3

The general layout of major pneumatic components used in stretch blow moulding machines is given in Fig 1.

“MERCURY” Series “X” and Series “Z” Hydro Pneumatic Clamping Systems use low cost pneumatic elements to achieve the large forces associated with pure hydraulic systems, with 50% saving in energy and 100% increase in speed over an equivalent hydraulic system.

The system has three stages of operation :-

Initial Low force, Large travel, Rapid Approach.

High Force, Short travel (typically 3mm), Power Stroke.

Low Force, Rapid Retraction.

The selection of the correct system is very important for efficient performance. General guidelines is given in the appropriate sections. Please feel free to contact us for further guidance if required.

Sequence of Operation

The heated perform is placed in the mould and the machine cycle is initiated by pressing 2 Hand Safety Push Buttons.

The Series “X” Clamp Cylinder closes the mould at High Speed with a low force (hence low compressed air consumption).

Just 3 to 5mm before the two halves of the mould touch, the Cushion Solenoid Valve is switched “ON”. This Cushions the closing of the mould and avoids banging and machine vibration. The rate of declaration can be varied by adjusting screw on Cushion Solenoid Valve.

After the mould closes completely the Power Stroke Solenoid Valve of Series “X” Cylinder is switched “ON”. This causes the clamping pressure to increase by 20 times the regulated air pressure to Power Stroke Solenoid Valve. The mould is now held in the closed position by a very large force.

The Neck Sealing Cylinder now moves down and seals the neck and Stretch Pin Cylinder extends to stretch the preform to the desired length.

The low pressure solenoid of Dual Pressure Blow Solenoid Valve is switched “ON”, causing initial stretch and blow at low force. After a delay the high pressure solenoid of a Dual Pressure Blow Solenoid Valve is switch “ON” for final blow and forming.

After the set blow time, the air exhausts, and all cylinders retract rapidly.

NOTE :-

General Description

(b)

(c)

The ideal cycle time is 5 to 7 seconds. This can be achieved by proper selection and location of valves and pipe fittings and tubing. Please feel free to contact us with your machine details to enable us to guide you correctly.

1.1

1.2

(b)

(c)

(d)

(e)

(f)

(g)

FIG. 3

OIL RESERVOIR TO BE MOUNTED ABOVE LEVEL OF CYLINDER

LOW PRESSURE WIRE BRAIDED HYDRAULIC HOSE

CUSHION SOLENOID VALVE

SERIES ‘X’ HYDRO PNEUMATIC CYLINDERFOR MOULD OPEN - CLOSE & LOCK

PU TUBING (6 I.D. FOR 2T & 4T)(10 I.D. FOR 8T)

(12 I.D. FOR 15T & 30T)

FLOW CONTROL VALVE ‘F’ FOR FORWARD SPEED CONTROL

5/2 SOL.-SPRING VALVEFOR RAPID MOULDOPEN - CLOSE

3/2 SOL.-SPRING VALVEWITH EXTERNAL PILOTFOR POWER STROKEMOULD LOCK

AIR PRESSURE REGULATOR ‘R’2(SET MAX. 6 Kg/cm )

3/2 HAND SLIDE VALVE

2AIR INLET (MAX. 8 Kg/cm )

EXHAUSTSILENCER

CYL

EXH

CYL

IN EXH

CYL

IN EXH

SERIES ‘X’ HYDRO PNEUMATIC CYLINDERFOR MOULD OPEN - CLOSE & LOCK

FLOW CONTROL VALVE ‘F’FOR FORWARD SPEED CONTROL

5/2 SOLENOID - SPRINGVALVE FOR RAPID

MOULD OPEN - CLOSE

EXHAUSTSILENCER

3/2 HAND SLIDE VALVE TOSHUT / OPEN AIR SUPPLY

FILTER, REGULATOR& LUBRICATOR SET

(NOT SUPPLIED BY US)

OILRESERVOIR

CUSHIONSOLENOIDVALVE

3/2 SOLENOID - SPRING VALVEWITH EXTERNAL PILOT FORPOWER STROKE MOULD LOCK

REGULATOR ‘R’ FOR TONNAGE ADJUSTMENT

X

A

IN

CYL

CB D

X

X

A

IN

CYL

C BD

X

CYL

CYL

EXH

IN

EXH

CYL

EXH

IN

5.07/4

Piping Layout (Series ‘X’)

FIG. 2

Pneumatic Circuit Diagram (Series ‘X’)

2.

(a)

5.07/5

The Series “X” System has been developed for applications where the cylinder has to be mounted horizontally.

Refer to Fig. 2 for Piping Layout, Fig. 3 for Pneumatic Circuit and Fig. 4 for overall dimensions and Fig. 6 for cut section details and spare parts list.

The system consists of a Hydraulic Cylinder and an Air to Oil Intensifier unit assembled as an integral unit. The Oil Reservoir is mounted vertically and coupled to the hydraulic cylinder through a suitable low pressure hydraulic hose. Alternatively, to achieve high speed and less heating of oil, the reservoir can be mounted vertically and Port “X” through a suitable connector.

An optional Cushion Solenoid Valve can be fitted in the oil line between the Reservoir and the Hydraulic Cylinder Port “X” to decelerate and close the moulds without jerks and vibration.

Sequence of Operation

Series “X” Hydro Pneumatic Press System

2.1

(b)

(c)

(d)

(e)

When the Approach Solenoid Valve is switched “ON”, air is admitted to Port ‘A’ and exhausted from ‘C’ and port ‘D’. The Output Shaft extends rapidly, with a low force, due to air pressure acting on reservoir piston through port ‘A’.

When the two halves of the mould are about to close, the Cushion Solenoid Valve is switched “ON”. This cause the main oil flow from Reservoir to the Hydraulic Cylinder to shut and the oil is made to flow slowly through an adjustable Flow Control Valve incorporated in the Cushion Solenoid Valve. The Cylinder movement is thus decelerated and the mould closes slowly without a bang.

When the moulds close fully, the Power Stroke Solenoid Valve is switched “ON”. This causes regulated air to be admitted to port ‘B’. The Intensifier Piston now moves forward and oil pressure in the Hydraulic Cylinder is increased by 20 times the regulated air pressure. This high pressure oil now acts on the large diameter Hydraulic Cylinder to give the large clamping force. The clamping force can be varied by adjusting Air Pressure Regulated ‘R’.

After the machine cycle is over all the Solenoid Valves are switched “OFF”, causing air to be admitted to Port ‘C’ and Port ‘D’ and exhausted from port ‘A’ and port ‘B’. The Cylinder retracts rapidly.

To avoid vibration during mould opening, the Cushion Solenoid Valve can be switched “ON” just before the mould opens fully.

5.07/6

‘N’ (B

.S.P

. AIR

PORTS)

‘X’ (B

.S.P

. OIL P

ORT)

L1 (4 N

os.)

FOR M

OUNTIN

G

BB1

J1 S

Q.

K1 S

Q.

A1

AD

E

C

‘N’ (B

.S.P

. AIR

PORT)

‘N’ (B

.S.P

. AIR

PORT)

‘N’ (B

.S.P

. AIR

PORT)

F T

HDS

ØG

ØH

L (6 N

os.) ON ‘M

’ P.C

.D. FOR M

OUNTIN

G

L (4 N

os.) FOR M

OUNTIN

G

‘H’ THD

’S (FOR LOCKIN

G)

‘F’ THD

’S x ‘J’ D

EEP

2 N

os.

A

G

A1

B

C (MIN

)

AS P

ER C

USTOMER

REQUIR

EMENT

‘L’ SQ.

‘K’ SQ.

ØM

’ THRU H

OLE

‘

ØN

’ DRILL F

LAT x ‘P

’ DEEP

‘

‘R’

(RADIU

S)

ØE

ØE1

ØD

ØD1

+.00

.10

+.10

.00

+.10

.00

+.10

.00

S

‘S’ A/F

FLAT

SPANNER

A

14.8

TON

2

C 58

D

43.8

E

37.8

A1

15

14.8

471

57.8

44.8

15

14.8

878

63.8

49.8

15

14.8

15

98

77.8

64.8

15

19.8

30

134

87.8

74.8

20

B 25

30

30

30

40

D1

44

58

64

78

88

E1

38

45

50

65

75

F

M20x1

.5

M24x2

M36x2

M40x2

M48x3

G 10

10

10

15

15

H

M6x1

M6x1

M6x1

M8x1

.25

M8x1

.25

J 35

40

40

40

45

K 44

52

58

72

80

L 62

75

78

98

105

M 8.5

8.5

10.5

12.5

12.5

N

13.5

13.5

16.5

19

19

P 12

15

15

15

15

R

125

275

375

600

775

S 35

42

46

60

70

K S

Q.

J SQ.

FREE A

IR C

ONSUMED

/ CYCLE IN LTS.

3.5

4.7

6.0

7.2

10.9

13.1

15.3

17.5

21.0

24.5

28.5

32.5

41.3

48.3

57.7

67.3

47.0

56.0

90.0

109.0

TON

2 2 2 2 4 4 4 4 8 8 8 8 15

15

15

15

30

30

30

30

TOTAL

STROKE

100

150

200

250

100

150

200

250

100

150

200

250

100

150

200

250

100

150

200

250

POW

ER

STROKE

3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

A

381

431

481

531

413

463

513

563

449

499

549

599

454.5

504.5

554.5

604.5

468

518

568

618

A1

15

15

15

15

21

21

21

21

30

30

30

30

35

35

35

35

40

40

40

40

B

150

200

250

300

156

206

256

306

144

194

244

294

167

217

267

317

167

217

267

317

B1

210

260

310

360

227

277

327

377

222

272

322

373

252

302

352

402

248

298

348

398

C 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

D 19

19

19

19

22

22

22

22

24

24

24

24

24.5

24.5

24.5

24.5

26

26

26

E 30

30

30

30

35

35

35

35

35

35

35

35

35

35

35

35

40

40

40

40

F

M20x1

.5

M20x1

.5

M20x1

.5

M20x1

.5

M24x2

M24x2

M24x2

M24x2

M36x2

M36x2

M36x2

M36x2

M40x2

M40x2

M40x2

M40x2

M48x3

M48x3

M48x3

G

25.40

25.40

25.40

25.40

31.75

31.75

31.75

31.75

50.80

50.80

50.80

50.80

62.30

62.30

62.30

62.30

62.30

62.30

62.30

62.30

H 45

45

45

45

55

55

55

55

75

75

75

75

90

90

90

90

90

90

90

J 78

78

78

78

108

108

108

108

145

145

145

145

182

182

182

182

205

205

205

J1 65

65

65

65

92

92

92

92

128

128

128

128

168

168

168

168

175

175

175

K 55

55

55

55

78

78

78

78 - - - - - - - - - - - -

K1

52

52

52

52

71.5

71.5

71.5

71.5

100

100

100

100

130

130

130

130

140

140

140

L

M12x1

.75

M12x1

.75

M12x1

.75

M12x1

.75

M16x2

M16x2

M16x2

M16x2

M16x2

M16x2

M16x2

M16x2

M20x2

.5

M20x2

.5

M20x2

.5

M20x2

.5

M24x3

M24x3

M24x3

26

M48x3

90

205

175

140

M24x3

L1

M8x1

.25

M8x1

.25

M8x1

.25

M8x1

.25

M10x1

.5

M10x1

.5

M10x1

.5

M10x1

.5

M12x1

.75

M12x1

.75

M12x1

.75

M12x1

.75

M16x2

M16x2

M16x2

M16x2

M16x2

M16x2

M16x2

M16x2

M - - - - - - - -

105

105

105

105

125

125

125

125

150

150

150

150

N

1/4”

1/4”

1/4”

1/4”

1/4”

1/4”

1/4”

1/4”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2”

X

3/4”

3/4”

3/4”

3/4”

3/4”

1”

1”

1”

1”

1”

1”

1”

3/4”

1”

3/4”

3/4”

1/2”

1/2”

1/2”

1/2”

MODEL

No.

PO20X-1

00

PO20X-1

50

PO20X-2

00

PO20X-2

50

PO40X-1

00

PO40X-1

50

PO40X-2

00

PO40X-2

50

PO80X-1

00

PO80X-1

50

PO80X-2

00

PO80X-2

50

P150X-1

00

P150X-1

50

P150X-2

00

P150X-2

50

P300X-1

00

P300X-1

50

P300X-2

00

P300X-2

50

Flexible C

oupling

Reservoir

Cylinder - Intensifier Unit

Series ‘X

’ Hydro

Pneumatic Press C

ylinder : Basic D

imensions

POW

ER R

EQUIR

ED = (H.P

.) OR x 0.746 (KW

)Q x N

120

Q x N

120

To calculate the horse power of compressor required :-

21HP = 120 LIT

RES O

F F

REE A

IR (NL) PER M

INUTE A

T 5 K

g/C

m

N = N

UMBER O

F C

YCLES P

ER M

INUTE

Q= F

REE A

IR C

ONSUMED P

ER C

YCLE (FROM C

HART) IN

NORMAL LIT

RES (NL)

‘X’ (B

.S.P

. OIL P

ORT)

FIG. 4 FIG. 5

SEAL K

IT

90-0

02

90-0

02

90-0

02

90-0

02

90-0

03

90-0

18

90-0

18

90-0

18

90-0

05

90-0

05

90-0

18

90-0

05

90-0

03

90-0

05

90-0

03

90-0

03

90-0

01

90-0

01

90-0

01

90-0

01

Extra long guided piston, with low friction ‘U’ seals.

Precision honed barrel.

Specially compounded rod wiper seal.

Piston rod centreless ground and hard chrome plated.

All mountings can be attached without dismantling the cylinder.

Ø50 & 100 Aluminium alloy IS 63400 (6063T6)

Ø125 Seamless Steel

Carbon steel IS 5517 - C35

Aluminium alloy IS 63400 (6063T6)

Nitrile rubber, polyurethane (Viton for high temp. on

request)

:

:

:

:

:

Mechanical Characteristic

Barrel

Piston Rod

End Caps

Seals

Salient Features

Air (filtered 40F & lubricated)

+5B to 50 C

Port ‘A’ 0.5 to 10 bar and Port ‘B’ 0.5 to 40 bar

Bubble Tight

F B

:

:

:

:

Operating Conditions

Media

Temperature Range

Pressure Range

Leakage

F

F

Hollow Shaft Neck Sealing Cylinders (Series CH)Piston dia 50, 80 and 125mm

Basic Dimensions

EE (B.S.P.)(L.P.)

KK THD’SØB

EE (B.S.P.)(H.P.)

G THD’S x GA DEEP FOR MOUNTING(FOR CH125-60HP)

ØC2PORT ‘B’

PORT ‘A’

ØJTHRU

ØC1

W H N H V A

GAM

Z

F SQ. E SQ.

D P.C.D.(FOR CH125-50HP)

D P.C.D.

G THD’S x GA DEEP FOR MOUNTING(FOR CH125-50HP)

G THD’S x GA DEEPFOR MOUNTING

SW2

4.1

(i)

The Series “CH” Double Acting, Hollow Through Rod Pneumatic Cylinders have been developed for sealing small neck diameter containers (upto 35 mm dia.). The piston rod has a through hole with replaceable bearing bushes to accommodate different sizes of stretch pins.

Salient features of the Cylinder are :

(ii)

Light weight, aluminium alloy barrel, end covers and piston. The barrel is precision honed.

Bronze filled teflon wear strip on the piston and Gun Metal bearing brushes in the end covers, to accommodate eccentric loads on the shaft.

Special profile ‘U’ Cup Seals for low friction and bubble tight sealing.

Mountings as per ISO 6431 Standards or as per customer specifications.

In addition to the cylinders listed in this manual, we are in position to develop special cylinders as per customer specifications.

Please specify Seal Kit No. While ordering spare seals.

(iii)

(iv)

SW1

4.2

4.3

4.4

5.07/7

MODELNo.

CH50-50HP(12)

CH80-50HP(12)

CH80-50HP(14)

CH80-50HP(16)

CH125-50HP(16)

CH125-50HP(20)

CH125-60HP(14)

PISTONØ (mm)

50

80

80

80

125

125

125

A

15

15

15

15

11

11

20

ØB

40

48

48

48

48

48

78

ØC1

25

32

32

32

32

32

50.8

ØC2

20

25

25

25

25

25

35

D(P.C.D.)

68

100

100

100

90

90

154

E

69

98

98

98

144

144

144

EE(B.S.P.)

1/4”

1/4”

1/4”

1/4”

1/4”

1/4”

1/2”

F

48

70.7

70.7

70.7

109

109

109

G

M6

M8

M8

M8

M10

M10

M16

GA

17

15

15

15

16

16

68

H

30

30

30

30

30

30

36

J

12

12

14

16

16

20

14

KK

M24x1.5

M27x2.0

M27x2.0

M27x2.0

M24x1.5

M30x2.0

M40x2.0

M

5

5

5

5

5

5

20

N

106

108

108

108

114

114

124

SW1

19

22

22

22

-

-

-

SW2

22

28

28

28

28

28

45

V

15

15

15

15

16

16

10

W

64

62

62

62

59

59

75

Z

260

260

260

260

260

260

301

SEAL KITNo.

90-077

90-074

90-074

90-074

90-080

90-080

90-076

Extra long guided piston, with low friction ‘U’ seals and unbreakable rubber magnet

for reed switch actuation.

International standard ‘T’ slots for reed switch.

Precision honed barrel.

Fine control cushion screw with lock at rear end, to prevent accidental removal.

Specially compounded rod wiper seal.

Piston rod centreless ground and hard chrome plated.

All mountings can be attached without dismantling the cylinder.

Aluminium alloy IS 63400 (6063T6)

Carbon steel IS 5517 - C35

Aluminium alloy IS 63400 (6063T6)

:

:

:

:

Mechanical Characteristic

Barrel

Piston Rod

End Caps

Seals

Salient Features

Air (filtered 40F & lubricated)

+5B to 50 C

0.5 to 10 bar

Bubble Tight

F B

:

:

:

:

Operating Conditions

Media

Temperature Range

Pressure Range

Leakage

F

F

Stretch Pin Cylinders (Series PL)Piston dia 40 and 50mm

Basic Dimensions

5.1

(i)

The Series “PL” Double Acting Pneumatic Cylinders are manufactured as per IS 6431 Standards. In this Series, we manufacture the full range from 32 mm bore to 200 mm. The models included in this manual are supplied to the Stretch Blow Moulding Machine manufacturers for operation of the stretch pin.

Salient features of the Cylinders are :

(ii)

Light weight, aluminium alloy barrel, end covers and piston. The barrel is precision honed for low friction and long life of seals..

Bronze filled teflon wear strip on the piston and Gun Metal bearing brushes in the end covers, to accommodate eccentric loads on the shaft.

Special profile ‘U’ Cup Seals for low friction and bubble tight sealing.

Built in permanent magnet in piston as standard. Reed Switches can be mounted on the barrel for sensing the motion of the cylinder.

Long length cushioning with a fine thread adjustment screw for guaranteed declaration at high speeds.

Please specify Seal Kit No. While ordering spare seals.

(iii)

(iv)

5.2

(v)

5.3

EE (B.S.P.)(2 Nos.)

CUSHIONING SCREW

H

J

L

M Z

N W

VGA

ØB

H

J

JJ

LL JJ A

ØK ØC

SENSOR SLOT FORPROXIMITY SENSOR(8Nos.)

‘D’ P.C.D.‘O’ A/F

‘F’ SQ. ‘E’ SQ.

‘G’ THD’S x ‘GA’ DEEPFOR MOUNTING

Nitrile rubber, polyurethane (Viton for high temp. on request)

5.07/8

MODELNo.

PL40-400-12-330

PL50-400-12-330

PL50-600-16-375

PL50-600-20-375

PISTONØ (mm)

40

50

50

50

A

10

10

10

10

ØB

35

40

40

40

ØC

12

12

16

20

D(P.C.D.)

56

68

68

68

E

57

69

69

69

EE(B.S.P.)

1/4”

1/4”

1/4”

1/4”

F

39.6

48.0

48.0

48.0

G

M6

M8

M8

M8

GA

16

17

H

29.5

30.0

30.0

30.0

J

13

15

15

15

M

4

4

4

4

N

479

476

676

676

V

5

5

5

5

W

330

330

375

375

Z

835

836

1081

1081

17

17

JJ

4.5

7.0

7.0

7.0

K

11

11

15

19

L

11.5

6.5

6.5

6.5

O

10

10

14

17

LL

9

13

13

13

SEAL KITNo.

90-054

90-053

90-075

90-085

Valves for “Pet Moulding”

6.0

5.07/9

6.2

6.3

6.1

3/4” & 1” BSP 2/2 (2 WAY) Normally Open Cushion Solenoid Valves

2.06/13

7.1

High & Dual Pressure Blow Solenoid Valves

2The blowing pressure for PET is generally in the range of 15 to 25 Kg/cm . We have developed two types of 1/2” 3/2 Poppet type Solenoid Valves with external pilot for this application.

The Single Solenoid Valve feeds blow pressure when the coil is switched “ON” and exhausts air when the coil is switched “OFF”.

The Dual Pressure Double Solenoid Valve first feeds low pressure (Max. 7 Kg/cm ) and when the preform is fully stretched, the high pressure solenoid is switched “ON” to provide final blow (Max. 30 Kg/cm ) for uniform forming. When both solenoids are switched “OFF” the blow air exhausts through the valve.

Refer to Section 2 on page 2.06/11 & 2.06/12 for construction details and dimensions.

We do not recommend that these valves be serviced in the field. In case of failure, replace the valve and send it for repairs to our factory or nearest service centre. Always specify the model no. and nature of complaint while sending the valve for service.

5.07/10

7.2

7.3

2

2

1/2” BSP 3/2 ( 3 WAY) High

Pressure Blow Solenoid Valve

1/2” BSP 3/2 ( 3 WAY) Dual

Pressure Blow Solenoid Valve

7.0

1/2” BSP 3/2 (3 WAY) High & Dual Pressure Blow Solenoid Valves

5.07/11

8.2

8.3

8.1

1/4” & 1/2” BSP Valve-Regulator Assembly

8.0

STANDARD VRA2 & VRA4SERIES ‘X’ & ‘Z’

MODEL VRA2Z & VRA4Z

2.06/4 & 2.06/5

piping cost and air consumption.

Our High Pressure Regulator Model RH4 is a piston type regulator that has been developed to overcome the failure of diaphragm type regulators under high pressure.

The salient features are :

9.2 Refer to Section 2 on page 2.06/14 for technical specifications.

The regulator is a simple device and can be serviced in the field. Individual spare parts can be supplied. Please specify the Part No. while ordering.

(i)

(ii)

Compact and light weight

Well proportioned piston to spring ratio for fine control of output pressure.

Few moving parts for easy servicing(iii)

1/2” BSP High Pressure Regulator

9.1

10.1 When our Dual Pressure Blow Solenoid Valve is used, our 1/2” Non Return Valve Model NR4 has to be fitted in the pipeline between the Low Pressure inlet of Dual pressure Blow Solenoid Valve and the Outlet of Low Pressure regulator. Refer to Section 2 on page 2.05/2 for construction details and dimensions.

1/2” BSP Non-return Valve

5.07/12

9.0 High Pressure Regulator

10.0 Non Return Valve