RPI Part #ADK277
OEM Part #38.1970.00 (Version 2)

HANDPIECE CONTROL BLOCK

• Version 2 (4 Position) design
• Material: Brass/Aluminum
• See Notes below for parts included in the handpiece control block

Fits: Delivery Units (4 Position) Models: 200 (After 06/2017), 332, 333, 334, 335, & 336
Model(s) This Part Fits: Handpiece Control Block 300 Series (38.1970.00)

Part Description Updated: 6/20/2025

Notes:

Includes:

• Control block,
• (11 pcs) Uni-Clamp (RPI Part #ADC034),
• (1 pkg) Knob (Flow Adj.) (RPI Part #ADK281),
• Stem (Air Coolant) (RPI Part #ADS279),
• (3) Water Cartridge Assembly (RPI Part #ADC287),
• Water Cartridge Assembly Dry (RPI Part #ADC288),
• (4) Stem Cartridge Assembly (Flats) (RPI Part #ADS285),
• (4) Stem (Drive Air) (RPI Part #ADS235),
• Diaphragm (RPI Part #ADD238),
• Barb Retainer (RPI Part #ADR239),
• (1 pc) Barb (RPI Part #ADB230),
• (14 pcs) Barb (RPI Part #ADB012),
• (1 pc) Hex plug (RPI Part #ADP057),
• (9 pcs) Socket Head Cap Screw (RPI Part #RPH740),
• (13 pcs) Flat Washer (RPI Part #ADW038)

Also available:

• Quick Disconnect Plug (RPI Part #ADP232),
• Quick Disconnect Barb (RPI Part #ADB248),
• Quick Disconnect Barb (RPI Part #ADB249),
• Quick Disconnect Barb (RPI Part #ADB250),
• Quick Disconnect Barb (RPI Part #ADB251),
• Replacement Stem (Water Flow Adj.) (RPI Part #ADS280) for the stem cartridge
• Handpiece Control Block (RPI Part #ADK278) to fit the 300 Series (38.1871.00)