PNS/HYS Series Scotch Yoke

Product Overview

Paladon Systems PN & HY-Series pneumatic and hydraulic scotch-yoke actuators have been specifically designed to guarantee long cycle life in the most critical applications and extreme operating environments. A fabricated frame and all-steel construction coupled with an Ingress Protection rating of IP66 as standard result in lighter and more corrosion resistant actuators than traditional ones that employ castings.

Available in double-acting (fail last) and spring-return configurations, PN & HY-Series actuators are suitable for on/off, modulating and ESD valve applications.

Product Features and Benefits

Fabricated steel frame and all-steel construction result in lighter and more corrosion resistance than competing cast body designs

IP66 ingress protection as standard ensures the actuators are ideal for offshore and coastal applications
Electroless nickel plated cylinder as standard with hard chromium plating, Xylan® or Electro-film available for high operating efficiency and extended piston seal life
Springs contained within a fully welded canister (which is post weld heat treated) to guarantee simple and safe removal
Springs are scragged (set removal) in order to warrant optimum and stable performance
Easy and economical maintenance due to simplified design, no special tools required
Compliant to PED 97/23/EC
Suitable for high frequency and high speed operation
Several yoke lever configurations (cants) allowing selection of the actuator output torque that best suits the valve torque characteristic
Guide bar frame design used to eliminate side forces and low friction seals ensure high efficiency
Modular construction means greater flexibility when selecting cylinder/spring combinations, and reduces production downtime during field servicing

Item No.	Component Description	Material
PISTON CYLINDER
1	Cylinder Liner	Carbon Steel (ENP coated)
2	Piston	Carbon Steel
3	Piston Rod	Alloy Steel (Chromium plated)
4	Rod Head flange	Carbon Steel
5	Blank Head Flange	Carbon Steel
6	Tie Rod	Carbon Steel
7	O-Rings	NBR
8	Bearing	Fe-Bz-Teflon
YOKE HOUSING
9	Housing	Carbon Steel
10	Cover	Carbon Steel
11	Scotch Yoke	Alloy Steel
12	Bushing	Bronze
13	Sliding Block	Bronze
14	Guide Block	Carbon Steel
15	Guide Bar	Alloy Steel (Chromium plated)
16	Position Indicator	Carbon Steel
17	Roller Pin	Alloy Steel
18	Connection	Carbon Steel
19	Plug	Alloy Steel
20	Spring	Spring Steel
21	Plate	Stainless Steel
SPRING CYLINDER
22	Spring Liner	Carbon Steel
23	Spring Head Flange	Carbon Steel
24	Spring End Flange	Carbon Steel
25	Flange	Carbon Steel
26	Push Bar	Alloy Steel (ENP)
27	Spring	Spring Steel
28	Du Bearing	Fe-Bz-Teflon

Performance Data

Supply Pressures

PN-Series: 40 to 175 psig (2.7 to 12 Barg)
HY-Series: 90 to 3,625 psig (13 to 250 Barg)

Torque Output Range

PN & HY-Series: Up to 5,310,000 lbs.in. (600,000 Nm)

Ambient Operating Temperatures

Ultra-low: -85 to +176°F (-65 to +80°C) (HY-Series only)
Low: -49 to +140°F (-45 to +60°C)
Standard: -4 to +176°F (-20 to +80°C)
High: -4 to +284°F (-20 to +140°C)