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VRG Controls VPC-DA-BV Assembly Instructions Manual

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VPC-DA-BV
Pilot Blank
Assembly
Instructions

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Summary of Contents for VRG Controls VPC-DA-BV

  • Page 1 VPC-DA-BV Pilot Blank Assembly Instructions...
  • Page 2 Install Nozzle Block into Seat Block Assembly Seat – Block 3/16 x ½ Roll Pin into Body (QTY 4) Instructions: 1. Insert 3/16 x ½ Roll Pins into Seat Block Balance Valve Seat 2. Apply light silicon grease to all O-Rings, threads, thrust bearing and spring seat.
  • Page 3 Seat Block Assembly Check for Leakage around Balanced Valve Cover Here in STEP 3 Instructions: Seat Block Assembly (QTY 2) 1. Before assembling balance of VPC, it is critical to confirm integrity of Balanced Valve Seats via a pressure test. 2.
  • Page 4 Install Pistons into Top Seat Block Assembly 8-32 x ½ ALLOY SHCS (QTY 2 Instructions: BV Piston 1. Lubricate -012 O-ring and install on BV Piston -012 O-ring 2. Lubricate -010 O-rings and install on Long Inside Piston Connecting Posts. (QTY 2) 3.
  • Page 5 Top Seat Block Assembly with Pistons Installed TOP Seat Block Assembly with Pistons (QTY 1)
  • Page 6 Install -700 Diaphragms on Top Seat Block Assembly ½-20 SS JAM Nut Instructions: Piston Washer-700 1. Apply Piston Washer-700 on BV Piston with serrations facing UP -700 Diaphragm 2. Install -700 Diaphragm onto BV Piston with convolute Piston Washer-700 facing UP 3.
  • Page 7 Top Seat Block Assembly with Diaphragms Installed Top Seat Block Assembly with Diaphragms Installed (QTY 1)
  • Page 8 Install Pistons into Bottom Seat Block Assembly Instructions: 8-32 x ½ ALLOY SHCS (QTY 2 1. Lubricate -012 O-ring and install on BV Piston Short Inside Piston -012 O-ring 2. Lubricate -012 O-ring and install on Short Inside Piston 3. Install 8-32 x ½ ALLOY SHCS through BV Piston and install Connecting Posts.
  • Page 9 Bottom Seat Block Assembly with Pistons Installed Bottom Seat Block Assembly with Pistons Installed (QTY 1)
  • Page 10 Install -700 Diaphragms into Bottom Seat Block Assembly ½-20 SS JAM Nut Instructions: Piston Washer-700 1. Apply Piston Washer-700 on BV Piston with -700 Diaphragm serrations facing DOWN 2. Install -700 Diaphragm onto BV Piston with Piston Washer-700 convolute facing DOWN 3.
  • Page 11 Bottom Seat Block Assembly with Diaphragms Installed Bottom Seat Block Assembly with Diaphragms Installed (QTY 1)
  • Page 12 Install Thrust Bearing into Adjusting Drum Instructions: 1. Press Thrust Bearing into Sensitivity Drum with stamped letters side first. Bearing case should fit Adjusting Drum snugly inside Adjusting Drum and bearing surface should face outward and rotate freely. 2. ATTENTION: The Thrust Bearing should fit completely down to inner surface of Adjusting Drum and should be level around perimeter to avoid slant or side load.
  • Page 13 Adjusting Drum with Thrust Bearing Installed Adjusting Drum with Thrust Bearing Installed...
  • Page 14 Install Adjusting Drum Onto Top Seat Block Assembly Instructions: 1. Apply lubrication to Long Inside Piston Top Seat Block Assembly 2. Install Adjusting Drum onto Top Seat Block Assembly by threading onto Long Inside Piston until it just bottoms out against ½-20 JAM Nut.
  • Page 15 Top Seat Block Assembly with Adjusting Drum Installed Top Seat Block Assembly with Adjusting Drum Installed (QTY 1)
  • Page 16 Install Pilot Spacer onto Top Pilot Block Assembly Instructions: 1. ATTENTION: Center Connecting Posts assemblies within Top Pilot Block Assembly as follows to avoid friction (rubbing): 2. Rotate diaphragm assemblies counterclockwise (CCW) until it stops & place a single pencil mark across the diaphragm and top surface of the Top Top Pilot Block Assembly Pilot Block Assembly.
  • Page 17 Install Bottom Pilot Block Assembly Instructions: 1. ATTENTION: Center Connecting Posts assemblies within Bottom Pilot Block Assemblies as follows to avoid friction (rubbing): 2. Rotate diaphragm assemblies counterclockwise (CCW) until it stops & place a single pencil mark across the diaphragm and top surface of the Bottom Pilot Block Top Pilot Block Assembly Assembly.
  • Page 18 Power Module Assembly Power Module Assembly (QTY 1)
  • Page 19 Install Pilot Bottom Flange onto Power Module Assembly 1/4-20 x 7/8 HHCS 316SS (QTY 6) Instructions: 1. Flip the Power Module Assembly upside down and install Bottom Pilot Spring as shown onto threaded end of piston. Pilot Bottom Flange 2. Lubricate Bottom Pilot Spring Bottom Pilot Spring 3.
  • Page 20 Power Module Assembly with Pilot Bottom Flange Installed Power Module Assembly with Pilot Bottom Flange Installed (QTY 1)
  • Page 21 Install Connecting Manifolds to Power Module Assembly Instructions: Connecting Manifold (QTY 2) 1. Apply thin film of lubricant to .014 O-Rings to facilitate assembly. 2. Adhere .014 O-Rings to cavities on either side of Power Module Assembly (QTY 4). 3. Install Connecting Manifolds (QTY 2) to Power Module Assembly using ¼-20 5/8 SHCS (QTY 8).
  • Page 22 Pilot Blank Assembly with Connecting Manifolds Installed Pilot Blank Assembly with Connecting Manifolds Installed...
  • Page 23 Attach Pilot Blank Assembly to Mounting Bracket Instructions: 1. Install ¼ NPT Vent Breather into NPT port on bottom of Pilot Blank Assembly. Pilot Blank Assembly 2. Attach Pilot Blank Assembly to VPC Standard Mounting Bracket as shown using Flat Washers, Lock Washers and 3/8-16 x ¾...