Samson Original Positioner 3725 Electropneumatic Positioner

• Customization: Available
• Max. Supply Pressure: 6 Bar ⋅ for Limitations in Flow-Switching Ser
• Permissible Temperatures in Continuous O: −35 to +90 °c with Standard Material NBR
• Rolling Diaphragm: NBR (Nitrile Rubber) with Fabric Insert
• Actuator Stem: Wn 1.4305
• Diaphragm Case: Sheet Steel, Plastic-Coated
• Handwheel: Spindle Wn 1.4104 ⋅ Nut Wn 1.4006
• Transport Package: Carton
• Specification: 3277
• Trademark: Samson
• HS Code: 8481901000

Product Description

Safety instructions

For your own safety, follow these instructions concerning the mounting, start up and operation of the positioner:  The positioner is to be mounted, started up or operated only by trained and experienced personnel familiar with the product. According to these Mounting and Operating Instructions, trained personnel refers to individuals who are able to judge the work they are assigned to and recognize possible dangers due to their specialized training, their knowledge and experience as well as their knowledge of the relevant standards.  Explosion-protected versions of this positioner may only be operated by personnel who have undergone special training or instructions or who are authorized to work on explosion-protected devices in hazardous areas. 
 Any hazards that could be caused by the process medium, the operating pressure, the signal pressure or by moving parts of the control valve are to be prevented by means of the appropriate measures. If inadmissible motions or forces are produced in the actuator as a result of the supply 
pressure, the supply pressure must be restricted by means of a suitable supply pressure reducing station.  Proper shipping and appropriate storage are assumed.

Specification

Advantages of direct attachment:

 Interference fit providing exact mechanical connection;
no alteration of adjustment during shipping
• Travel linkage protected against unwanted contact and external influences; corresponds to the accident prevention requirements of UVV (VBG 5)
• Simple air connection between the actuator and the
positioner

• Low overall height
• Powerful thrusts
• High speeds of response
• Various bench ranges (signal pressure ranges) possible
• No special tools required to reverse the actuator action and
modify the bench range

With the Type 3277-5 Pneumatic Actuator for Integral Positioner Attachment, the positioner output pressure pst is introduced as loading pressure either to the top or bottom diaphragm chamber, resp. independent of the operating direction
of the actuator and positioner. No additional piping is necessary. Only the changeover plate needs to be set correspondingly

right elevation

left elevation

front elevation

Technical Specifications

(Custom configurations available upon request.)

Model	3725
Travel, adjustable	Direct attachment to Type 3277 Actuator: 3.75 to 30 mm  Attachment acc. to IEC 60 534-6-1 (NAMUR): 3.75 to 50 mm  Attachment to Type 3372 Actuator: 15/30 mm  Attachment to rotary actuators: 24 to 100°
Minimum current	3.8mA
Load impedance	6 V (corresponds to 300  at 20 mA)
Signal pressure (output)	0 bar up to the capacity of the supply pressure · Can be limited to approx. 2.4  bar by software
Direction of action	w/x reversible

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).

Packaging & Shipping

Company Profile

    Nice to meet you and thank you for the information. We have a wide range of stock products including valve instruments, fittings,and spare parts from brands such as Rotork, Samson, ASCO, TOPWORX, GO SWITCH, YTC, Masoneilan, and more. With years of specialization in valves and valve fittings, we have established a stable and robust supply chain and maintain a large inventory at competitive prices. I am committed to offering you the best prices to demonstrate our sincerity. We provide comprehensive services for equipment, installation, commissioning, maintenance, and technical modification. Many European and American brands are available in stock at competitive prices. Looking forward to your reply Thank you and best wishes. If you have any related product needs, please feel free to contact us. Feel free to let me know if you need any further adjustments!

FAQ

Q: Who we are?
A: We are a company that has been deeply involved in the valve industry for 10 years, providing original genuine products and complete after-sales service

Q: what can you buy from us?
A: Valve and parts, instruments,transmitter,flowmeter,positioner,hydraulic components,electronic products. PLC module.

Brand: Emerson, Rotork,Samson, KOSO,Flowserve, SMC

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

if you have any questions about our products, pls do not hesitate to contact me: Tel: [phone]