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Bray Series 6P

Operation and Maintenance Manual

8

Installation

CAUTION

When installing a positioner, please read and 
follow all safety instructions:

• Series 6P should be used for quarter-turn valves

and actuators only.

• All input and supply pressure to valve, actuator,

and other related devices must be turned off.

• Use a bypass valve or other equipment

to avoid entire system shut down.

• Make sure there is no remaining

pressure in the actuator.

Tools for Installation

1. Allen wrenches
2. Phillips and Flathead Screwdrivers
3. Wrench for hex-head bolts

Before installation, be sure to check for the following 

installation components.

1. 1 Main Body
2. 1 bracket set (3 pcs)
3. 8 pcs of hex head bolt M8 x 1.25P w/ washers
4. 12 pcs of M7 allen screws, lock washers & nuts
5. ¼” NPT plug

Note:

 

All Series 6P positioners are supplied as Double 

Acting. For Single Acting (Spring Return) operation 

OUT 2 should be plugged with a 1/4” NPT plug 

(See 

Figure 2 - pg. 7)

2.84 (72.2)

5.20 (132.1)

7.34 (186.5)

1/8 NPT Gauge

4 Places

4.8 (122)

6.5 (166)

1/4 NPT Air

4 Places

1.8

(45)

0.8 

(20)

3.2 (80)

2.4 (60)

0.8 (20)

0.8 (20)

4-M8 x 1.25P

1.06 

(26.9)

0.33(8.4)

4.86 (123.5)

1.6 (40)

2.4 (60) 1.4 (34.5)

7.34 (186.5)

1.67 (42.5)

1.71 (43.5)

0.1 (3)

3.6 (91.5)

1.8 (45.8)

2.8 (70)

2.6 (65)

8-M8 x 1.25P Dp.10

Dimensions in Inches (mm) 

Figure 3

Figure 4

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Summary of Contents for 6P Series

Page 1: ...SERIES 6P Pneumatic Positioner OPERATION AND MAINTENANCE MANUAL R CONTROLS...

Page 2: ...s a potential situation which if not avoided may result in an undesirable result or state including property damage CAUTION Beware of moving parts when positioner is operated CAUTION Do not dismantle...

Page 3: ...duction 4 Product Description 4 Manufacturer Warranty 4 Operation Logic 5 Label Description 6 Specifications 6 Parts and Assembly 7 Dimensions 8 Installation 8 Bracket Information 9 Piping Connection...

Page 4: ...ese products are used for the purposes for which they were designed and manufactured Bray does not warrant its products against chemical or stress corrosion or against any other failure other than fro...

Page 5: ...poppet 14 to seat and vent the outer chambers 10 As the actuator s inner pressure increases the actuator stem 8 rotates When the signal input pressure decreases the spool 1 moves to the left reversin...

Page 6: ...ection 1 4 NPTF Gauge Connection 1 8 NPTF Protection IP66 Cam Linear Optional Reverse Acting Ambient Temperature Ranges Std 4 F to 158 F 20 C to 70 C High 4 F to 248 F 20 C to 120 C Low 40 F to 158 F...

Page 7: ...7 Parts and Assembly Figure 2 ZEROADJUSTMENT CONNECTOR COVER FEEDBACKSHAFT PILOTVALVE SPANADJUSTMENT INPUTBELLOWS Auto ManualAdjustment CAM DOMEGEAR SIGNALIN SUPPLYIN OUTPUT1 OUTPUT2 Auto Manual Adjus...

Page 8: ...for hex head bolts Before installation be sure to check for the following installation components 1 1 Main Body 2 1 bracket set 3 pcs 3 8 pcs of hex head bolt M8 x 1 25P w washers 4 12 pcs of M7 alle...

Page 9: ...ator rests with no supply pressure If a Double Acting actuator is used check actuator stem s rotation direction clockwise or counter clockwise by supplying pressure 3 Attach the Series 6P to the brack...

Page 10: ...ng Return Actuator When mounting on the Bray S93 Spring Return Actuator OUT 1 should be connected to port A left port when facing the ports and OUT 2 should be plugged This generates increasing pressu...

Page 11: ...Span 1 After setting the Zero Point increase the signal pressure to 15 psi Loosen the locking screw slightly and rotate or turn the Span Adjustment Screw clockwise or counter clockwise until the actu...

Page 12: ...been dis placed Hunting may occur when the positioner is attached to a very small capacity actuator ex Bray Series 92 93 size 48 In such case install an output orifice for OUT 1 and OUT 2 per the foll...

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