Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for TLV PN-DR
Summary of Contents for TLV PN-DR
- Page 1 172-65119MA-01 (PN-DR) 13 June 2013 ISO9001/ISO14001 Manufacturer Kakogawa, Japan is approved by LRQA LTD. to ISO 9001/14001 Pneumatic Direct-acting Pressure Reducing Valve for Steam and Air PN-DR Copyright © 2013 by TLV CO., LTD. All rights reserved...
-
Page 2: Table Of Contents
PN-DR pneumatic direct-acting pressure reducing valve provides a more stable secondary pressure than conventional direct-acting reducing valves. The PN-DR is designed for a long service life, and is made of stainless steel for superior durability. For products with special order specifications or options, if detailed... -
Page 3: Safety Considerations
• The three types of cautionary items above are very important for safety: be sure to observe all of them as they relate to installation, use, maintenance, and repair. Furthermore, TLV accepts no responsibility for any accidents or damage occurring as a result of failure to observe these precautions. - Page 4 Use only under conditions in which no water hammer will occur. The impact of water hammer may damage the product, leading to fluid discharge, which may cause burns or other injury. 172-65119MA-01 (PN-DR) 13 Jun 2013...
-
Page 5: Specifications
Secondary pressure must not exceed 90% of primary pressure Maximum Operating Temperature 220 °C (428 °F) 0 - 1.0 MPaG (0 – 150 psig) Motive Air Pressure (Oil free air, filtered to 5 µm) 172-65119MA-01 (PN-DR) 13 Jun 2013... -
Page 6: Correct Usage Of The Pn-Dr Direct-Acting Pressure Reducing Valve
If an on-off valve is required to stop supply of steam or air to the equipment, install it at the inlet side of the PN-DR. If a solenoid valve is installed at the outlet of the PN-DR, it will cause heavy chattering and may lead to damage of the PN-DR. (When the on-off valve opens, the secondary pressure of the reducing valve changes from zero to the set pressure. - Page 7 4. Precautions for the Installation of Additional Fittings Before or After the PN-DR In order to ensure a stable flow of air or steam, the piping upstream and downstream of the reducing valve must be straight runs. If a pressure reducing valve is installed either directly before or after an elbow or control valve, unevenness in flow may result in chattering and unstable pressure.
-
Page 8: Configuration
A: Maintenance Kit B: Repair Kit for Spacer C: Repair Kit for Main Valve, D: Repair Kit for Bellows E: Repair Kit for Adjustment Handle Number of parts: 2 pieces Shipped as a unit 172-65119MA-01 (PN-DR) 13 Jun 2013... -
Page 9: Installation
3. Tolerance Angle for Installation Make sure the PN-DR is installed on horizontal piping with the adjustment handle facing up. Ensure the raised TLV lettering on the body is horizontal and the arrow is pointing in the direction of flow. - Page 10 (when it is not possible to reduce Inlet Inlet Outlet Outlet Pressure Pressure Secondary Secondary Primary Primary Valve Valve Valve Valve to the desired pressure using a Reducing Reducing Side Side Side Side Valve Valve single pressure reducing valve). 172-65119MA-01 (PN-DR) 13 Jun 2013...
- Page 11 Supply oil free air filtered to 5 µm for the for Motive Air motive air and adjust the air pressure to Motive Air Connection Port match desired value by using an air regulator or similar device. 172-65119MA-01 (PN-DR) 13 Jun 2013...
-
Page 12: Adjustment
3. Turn the adjustment handle counterclockwise to free the coil spring. 4. Slowly, fully open the shut-off valve at the inlet of the PN-DR. 5. Slightly open the shut-off valve at the outlet of the PN-DR. 6. Slowly turn the adjustment handle clockwise until the desired secondary (steam or air) pressure is obtained with the pressure of the coil spring. -
Page 13: Maintenance
Operational Check To ensure long service life of the PN-DR, the following inspection and maintenance should be performed regularly. Part... -
Page 14: Disassembly
Remove all steam/pressurized air from the piping (both upstream and downstream). Remove all motive air pressure. Wait for the body to cool before attempting to remove the PN-DR from the line. Then remove the PN-DR from the piping, and secure it in a vise to perform the inspection. - Page 15 Threads of the adjustment handle, threads of the cover, bellows, holder nut, valve stem, main valve, valve seat, spacer (including slide bearing), screen It is permissible to clean using water. However, cleaning with a mild detergent is recommended for more effective cleaning. 172-65119MA-01 (PN-DR) 13 Jun 2013...
- Page 16 (Upper Bellows Flange) Valve Stem Snap Ring* Slide Bearing* Spacer Slide Bearing* Snap Ring* *Cannot be removed individually as it is incorporated with the spacer and must be replaced as a set with the spacer. 172-65119MA-01 (PN-DR) 13 Jun 2013...
-
Page 17: Reassembly
Cover Bolt Valve Seat (51) Holder Nut (1 N⋅m ≈ 10 kg⋅cm) NOTE: - If drawings or other special documentation were supplied for the product, any torque given there takes precedence over values shown here. 172-65119MA-01 (PN-DR) 13 Jun 2013... -
Page 18: Troubleshooting
This product is shipped after stringent checks and inspection, and should perform its intended function for a long period of time without failure. However, should there be any problem encountered in the operation of the PN-DR, consult the troubleshooting guide below. Problems are classified as follows:... - Page 19 NOTE: When replacing parts with new, use the parts list for reference and replace with parts from the Maintenance Kit, Repair Kit, etc. (Please note that replacement parts are only available in pre-packaged kits.) 172-65119MA-01 (PN-DR) 13 Jun 2013...
-
Page 20: Product Warranty
One year following product delivery. 2. Warranty Coverage TLV CO., LTD. warrants this product to the original purchaser to be free from defective materials and workmanship. Under this warranty, the product will be repaired or replaced at our option, without charge for parts or labor.
Need help?
Do you have a question about the PN-DR and is the answer not in the manual?
Questions and answers