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6232150/3
IM-P071-02
CMGT Issue 3
HP70 Series
Bimetallic Steam Trap
Installation and Maintenance Instructions
1. Safety information
2. General product information
3. Installation
4. Commissioning
5. Operation
6. Maintenance
7. Spare parts
8. Fault finding
HP70 Series Bimetallic Steam Trap
© Copyright 2020
1
IM-P071-02 CMGT Issue 3
Printed in GB
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Related Manuals for Spirax Sarco HP70 Series
Summary of Contents for Spirax Sarco HP70 Series
- Page 1 Installation and Maintenance Instructions 1. Safety information 2. General product information 3. Installation 4. Commissioning 5. Operation 6. Maintenance 7. Spare parts 8. Fault finding HP70 Series Bimetallic Steam Trap © Copyright 2020 IM-P071-02 CMGT Issue 3 Printed in GB...
- Page 2 HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3...
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Page 3: Safety Information
Group 2 of the above mentioned Pressure Equipment Directive. This products’ use on other fluids may be possible but, if this is contemplated, Spirax Sarco should be contacted to confirm the suitability of the product for the application being considered. -
Page 4: Pressure Systems
You are advised to assess the risks taking into account the task, the individual, the load and the working environment and use the appropriate handling method depending on the circumstances of the work being done. HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3... -
Page 5: Residual Hazards
Customers and stockists are reminded that under EC Health, Safety and Environment Law, when returning products to Spirax Sarco they must provide information on any hazards and the precautions to be taken due to contamination residues or mechanical damage which may present a health, safety or environmental risk. -
Page 6: General Product Information
2. General product information 2.1 General description The Spirax Sarco HP70 bimetallic steam trap is made of forged steel, and designed for draining high pressure, high temperature steam lines and processes. This steam trap, which is specially designed for HP steam, has a reinforced stainless steel insert within the body and can be repaired online. -
Page 7: Pressure/Temperature Limits
(32 °F) PMX The backpressure for correct operation must not exceed 90% of the upstream pressure Designed for a maximum cold hydraulic test pressure of: 156 bar g (2263 psi g) HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3... -
Page 8: Installation
Gate valve (Downstream valve) HP series trap 0.61 metres (24") 1 metre minimum Test valve (3 ft) Fig. 2 Recommended installation - Note: pipework to fall in the direction of flow. HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3... -
Page 9: Operation
5. Operation The Spirax Sarco HP70 is a bimetallic steam trap. This trap operates on the basis of two opposing forces acting on the valve - an opening force created by the valve opening spring, and a closing force resulting from the condensate temperature acting on the bimetallic elements. -
Page 10: Maintenance
Shut the test valve and open the discharge line valve and check for leaks. Allow the trap to operate for several minutes and review the operation to ensure it is correct. HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3... - Page 11 Item Part (lbf ft) Bimetallic element - pipe spanner 36 A/F (88) Locking gland nut on adjustment screw 21 A/F (28) Cover nut 24 A/F (77.5) Blind nut 41 A/F (59) HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3...
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Page 12: Disassembly And Service
11. The bimetallic assembly kit (see Section 7, Spare parts) consists of the bimetallic element (3), valve seat gasket (2), cover gasket (7), blind nut gasket (10), strainer screen (4), valve seat (12), check valve ball (13) and check valve spring (14). HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3... - Page 13 Adjustment screw Locking gland nut 6 Adjustment screw tube Valve opening spring Check valve Fig. 4 HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3...
- Page 14 10. Tighten the locking gland nut (6) to the recommended torque (see Table 1) in order to lock and reduce leakage past the adjustment screw. Table 2 Setting (full turns clockwise) 4¼ 11. Install the blind nut and gasket (10 and 11) and torque as specified in Table 1. HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3...
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Page 15: Spare Parts
'Available spares' and state the size and model of the bimetallic steam trap. Example: 1 - Bimetallic assembly kit Adjustment screw for a Spirax Sarco ½" HP70 bimetallic steam trap. Locking gland nut 6 Adjustment screw tube Valve... -
Page 16: Fault Finding
Worn valve seat. Dismantle, inspect and replace if necessary. Note: The seat and bimetallic element must be replaced as a matched pair. Backpressure too high. Downstream system must be corrected. HP70 Series Bimetallic Steam Trap IM-P071-02 CMGT Issue 3...
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