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Summary of Contents for Spirax Sarco PV4
- Page 1 IM-IBR-P174-01-EN-ISS1 CMGT (India) PV4 and PV6 Piston Valves Installation and Maintenance Instructions 1. Safety information 2. General product information 3. Installation 4. Commissioning 5. Operation 6. Maintenance 7. Spare parts © Copyright 2018 IM-IBR-P174-01-EN-ISS1 CMGT Printed in India...
- Page 2 IM-IBR-P174-01-EN-ISS1 CMGT...
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Page 3: Safety Information
The PV4 has been specifically designed for use on steam, air or condensate. The PV4 and PV6 range have been designed for use on steam, air and water / condensate. The 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: Protective Clothing
1.9 Tools and consumables Before starting work ensure that you have suitable tools and / or consumables available. Use only genuine Spirax Sarco replacement parts. 1.10 Protective clothing Consider whether you and / or others in the vicinity require any protective clothing to protect against the hazards of, for example, chemicals, high / low temperature, radiation, noise, falling objects, and dangers to eyes and face. -
Page 5: Residual Hazards
In normal use the external surface of the product may be very hot. If used at the maximum permitted operating conditions the surface temperature of some products may reach temperatures in excess of 425 °C (797 °F) for PV4 and 538 °C (1000 °F) for PV6. -
Page 6: General Product Information
2. General product information 2.1 General description The PV4 and PV6 are piston isolation valves that have been designed for use on steam, condensate and other liquid sytems. Available types: Screwed, butt weld Carbon steel body / bonnet and stainless steel internals... - Page 7 Æ 20 area to be clear of engraving Product material type Pressure class Maximum allowable pressure Maximum allowable temperature Minimum allowable temperature Connection type to appear here Date code (see Table 1) Date code to appear here Fig. 2 Name plate 2.2 Sizes and pipe connections ½", ¾", 1", 1¼", 1½"...
- Page 8 425 °C @ 76 bar g (797 °F @ 1 102 psi g) Minimum operating temperature -29 °C (-20 °F) Note: For lower operating temperatures consult Spirax Sarco Designed for a maximum cold hydraulic test pressure: 204 bar g (2 958.8 psi g) IM-IBR-P174-01-EN-ISS1 CMGT...
- Page 9 538 °C @ 67 bar g (1 000.4 °F @ 971.7 psi g) Minimum operating temperature -29 °C (-20 °F) Note: For lower operating temperatures consult Spirax Sarco Designed for a maximum cold hydraulic test pressure: 198 bar g (2 871.8 psi g) IM-IBR-P174-01-EN-ISS1 CMGT...
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Page 10: Installation
3. Installation Note: Before actioning any installation observe the 'Safety information' in Section 1. The valve can be installed from the vertical to the horizontal plane. The valve can be installed in vertical pipework. The preferred orientation for installation. Fig. 3 Correct orientation for installation IM-IBR-P174-01-EN-ISS1 CMGT... - Page 11 Install the valve in the direction of flow given by the arrow on the body. The preferred position is with the spindle vertical. The valve can be installed from the vertical to the horizontal plane (see Figure 3 opposite). Do not mount the valve upside down (Figure 4).
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Page 12: Operation
5. Operation The Spirax Sarco PV4 and PV6 piston valves are operated manually by a handwheel. Special care must be taken to ensure that the movement is made in the correct direction; Anticlockwise to open - Clockwise to close. - Page 13 (3). Refit the bonnet (2) complete with the piston (6) and tighten the bonnet nuts (10) to the recommended torque (see Table 1). Fig. 5 PV4 (screwed) shown Table 1 Recommended tightening torques Item Size (lbf ft) ½"...
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Page 14: Spare Parts
Always order spares by using the description given in the column headed 'Available spares' and state the size and type of valve. Example: 1 - Bonnet assembly for a ½" Spirax Sarco PV4 (screwed) piston valve. 8 + 11 Fig. 6 PV4 and PV6 (screwed) shown... - Page 15 IM-IBR-P174-01-EN-ISS1 CMGT...
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