Graco MD2 Dispense Valve User Manual

MD2 Dispense Valve

For Accurate Two-Component Dispensing

Designed to accurately dispense and mix plural-component sealants and adhesives

• Minimizes maintenance time and costs while maximizing dispense time

• Designed with fewer parts and is easy to clean

• Streamlines maintenance and service

• Complete modular design adapts to different installation needs

• No unique tools required

• Handles a wide range of materials

PROVEN QUALITY. LEADING TECHNOLOGY.

Ideal for Most Two-Component Dispensing Applications

Technical Specifications

Ordering Information

Graco MD2 Dispense Valve

Valve Options

255179 1:1 soft seat, adjustable snuff-back

255180 1:1 hard seat, non-adjustable snuff-back

255181 Wide ratio, soft seat, adjustable snuff-back

255182 Wide ratio, hard seat, non-adjustable snuff-back

Manual Gun Options

255442 1:1 hard seat, air-actuated gun, trigger

255445 Wide ratio, hard seat, air-actuated gun, trigger

255443 1:1 hard seat, electrically-actuated

counter-balanced valve, trigger

255446 Wide ratio, hard seat, electrically-actuated

gun, trigger

255444 1:1 hard seat, electrically-actuated

counter-balanced valve, lever

255447 Wide ratio, hard seat, electrically-actuated

gun, lever

LC0004 1:1 soft seat, electrically-actuated

counter-balanced valve, trigger

LC0006 Wide ratio, soft seat, electrically-actuated

gun, trigger

LC0005 1:1 soft seat, electrically-actuated

counter-balanced valve, lever

LC0007 Wide ratio, soft seat, electrically-actuated

gun, lever

Manual Gun Options

255220 MD2 hard seat rebuild kit, needle and nose

255219 MD2 soft seat rebuild kit, needle and nose

255218 MD2 rebuild kit, back-end of wet section

255217 MD2 rebuild kit, air cylinder

255208 Electric switch handle

255206 Pneumatic switch handle

255249 Actuated lever

255273 Hanger adapter

MD2 VALVE

Maximum fluid pressure 3000 psi (276 bar, 27.6 MPa) Maximum cylinder air pressure 120 psi (8.4 bar, 0.84 MPa) Minimum air cylinder actuating pressure 40 psi (2.8 bar, 0.3 MPa) Maximum working fluid temperature 140˚F (60˚C) Wetted parts stainless steel, carbide, UHMWPE, acetal,

PEEK, PTFE Gun weight 1.45 lbs (0.66 kg) Dimensions 6.64 in L x 2.32 in W x 2.25 in D

(168.7 mm L x 59 mm W x 57 mm D) Fluid inlets 9/16-18 UNF (f) (06 SAE) Air inlets 1/8 in npt Instruction manual 312185

Adjustable Snuff-back Control

Dispenses material only where you need it

Independent Air Cylinder

Improves mean time to repair (MTTR)

Chromex™Shafts

Extends shaft life to better

handle abrasive materials

Grease Isolation Chamber

• Ideal for moisture-sensitive materials

• Accessible grease fittings for easy maintenance

All-SST Wetted Section

Maximizes material compatibility

Adjustable Inlet Position

• Flexibility during system installation

• Minimizes dead spaces in fluid path

Manual Dispense Gun Option

product information or to request

a hands-on demonstration,

call 1-877-84GRACO or visit us

online at www.graco.com.

©2007 Graco Inc. Form No. 339117 Rev.A 9/07 All other brand names or marks are used for identification purposes and are trademarks of their respective owners. All written and visual data contained in this document are based on the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice.

Two Nose Options

Customizes material mixing

Lever-Actuated Dispense Valve