Product Overview

ManualsBrandsJohnson Controls ManualsDampersPneumatic Valve Actuator for 1/2" & 3/4" VG7000 Valves

FANs 977, 1628.3

Product/Technical Bulletin V-3801-8001

Issue Date 1295

Part No. 14-1090-7, Rev. —

Code No. LIT-977253

The V-3801-8001 Pneumatic Valve Actuator is

designed to accurately position steam or water valve

modulating plugs in response to a pneumatic signal

from a controller. The small, oval top makes the

V-3801-8001 ideally suited for 1/2 and 3/4 inch valve

applications with restricted mounting space.

This actuator has a molded synthetic rubber

diaphragm design. The molded diaphragm provides

a constant effective area throughout the actuator

stroke. All parts are protected by a sturdy die-cast

aluminum housing.

Figure 1: V-3801-8001 Pneumatic Valve Actuator

V-3801-8001

Pneumatic Valve Actuator

Features and Benefits

q Compact Design Fits in restricted mounting spaces

q Easy Mounting Single set screw design provides easy

assembly

q Rolling Diaphragm Design Constant effective diaphragm area throughout

stroke for optimal force output

Summary of content (4 pages)

PAGE 1
FANs 977, 1628.3 Product/Technical Bulletin Issue Date V-3801-8001 1295 V-3801-8001 Pneumatic Valve Actuator The V-3801-8001 Pneumatic Valve Actuator is designed to accurately position steam or water valve modulating plugs in response to a pneumatic signal from a controller. The small, oval top makes the V-3801-8001 ideally suited for 1/2 and 3/4 inch valve applications with restricted mounting space. This actuator has a molded synthetic rubber diaphragm design.
PAGE 2
O peration M ounting Air pressure from a pneumatic controller is applied to the diaphragm of the actuator, which moves the piston against the valve stem. The piston will move the valve stem and plug until the diaphragm pressure balances the valve return spring force and the fluid forces. Reducing the air pressure permits the valve spring to return the valve plug to its normal position. With no control air pressure applied to the diaphragm, the valve is in the normal position.
PAGE 3
D imensions 13/16 (20) 4-13/32 (112) 2-1/4 (57) 2-3/8 (60) Figure 2: V-3801-8001 Pneumatic Actuator, in. (mm) R epair Information Field repairs cannot be made. For a replacement actuator, contact the nearest Johnson Controls branch office or wholesale distributor.
PAGE 4
S pecifications Product Maximum Control Pressure Air Connection Ambient Operating Temperature Limits Maximum Storage Temperature Effective Diaphragm Area Materials Shipping Weight V-3801-8001 Pneumatic Valve Actuator 30 psig (207 kPa) 1/8 in. NPT Barbed Fitting for 5/32 in. O.D. Polytubing -20 to 150°F (-29 to 66°C)* 150°F (66°C) 4 sq in. Housing: Die-cast Aluminum Diaphragm: Synthetic Rubber 0.5 lb (0.23 kg) * For use on steam systems with 15 psig (103 kPa) or less inlet pressure.