Brooks Instrument Control Valve - Manual (Page 6)

1-2
Section 1 Introduction Installation and Operation Manual
X-VA-8503-eng
Part Number: 541B087AHG
March, 2008
Needle Control Valves Models 8503 and 8504
Materials of Construction
Brass Model: Nickel plated brass body. Size 1-3: Brass and Delrin
® orifice;
sizes 4-6: Brass orifice; 316 steel valve needle, brass plunger, Buna-N O-rings.
Stainless Steel Model: 316 Stainless steel body and valve needle. Size 1-3:
Stn. Stl. and Teflon
® orifice; Sizes 4-6: Stn. Stl. orifice; Stn. Stl. plunger, Viton ®
fluoroelastomers O-rings
1-3 Compatible Brooks Equipment
Numerical Handle: Model 8513: Right angle, Model 8514: Straight pattern.
3 digit direct read numerical handle: 10 digits per turn (15 turns to full open)
readable to 1/20 turn. Handle can be rotated 360° to facilitate reading of
indicator.