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Table of Contents
0366055/7
BM, BMF, BX, SB, NS, KA, KB, KC
BMRA, BMFRA, BXRA, SBRA, NSRA, KX, KY
Installation and Maintenance Instructions
Printed in the UK
IM-S21-01 CH Issue 7
SA Control Valve types:
(Normally open)
(Normally closed)
1. General
safety information
2. Technical details
3. Installation and
commissioning
4. Maintenance
5. Spare parts
IM-S21-01
CH Issue 7
© Copyright 2006
1
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Table of Contents
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Summary of Contents for Spirax Sarco BM series
- Page 1 0366055/7 IM-S21-01 CH Issue 7 SA Control Valve types: BM, BMF, BX, SB, NS, KA, KB, KC (Normally open) BMRA, BMFRA, BXRA, SBRA, NSRA, KX, KY (Normally closed) Installation and Maintenance Instructions 1. General safety information 2. Technical details 3. Installation and commissioning 4.
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Page 2: General Safety Information
Determine the correct installation situation and direction of fluid flow. iv) Spirax Sarco products are not intended to withstand external stresses that may be induced by any system to which they are fitted. It is the responsibility of the installer to consider these stresses and take adequate precautions to minimise them. -
Page 3: Protective Clothing
Allow time for temperature to normalise after isolation to avoid danger of burns. 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 4: Returning Products
1.16 Returning products 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 5: Technical Details
2. Technical details See the following Technical Information Sheets, for full details of: Materials, sizes and pipe connections, dimensions, weights, operating ranges, capacities and spare parts. SA control valve TI reference BM, BMRA, BMF and BMFRA TI-P036-01 BX, BXRA TI-P036-02 SB, SBRA TI-P044-01 NS, NSRA... -
Page 6: Installation And Commissioning
Note: Before actioning any installation observe the 'Safety information' in Section 1. Important note The valves covered by these instructions are for use with Spirax Sarco EL and SA control systems Types 121, 122, 123 and 128. (The Types 122 and 128 SA control system are not suitable for valves above 1"... - Page 7 Steam Manual regulating valve Bypass Eccentric reducers Isolating Isolating valve valve Pipeline strainer control valve When medium is steam fit SA control a trap set to the drain line. system actuator Condensate Fig. 1 Typical installation showing recommended bypass IM-S21-01 CH Issue 7...
- Page 8 3.5 Permanent bleed BMRA and BXRA valves are normally closed. When used as a cooling control it may be necessary to create a permanent flow over the sensor. In this case this can be achieved by installing a small bore bypass around the valve as shown in Figure 2. A 6 mm line will usually be adequate with the manual valve about one turn open.
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Page 9: Routine Maintenance Procedures
4. Maintenance Note: Before actioning any maintenance programme observe the 'Safety information' in Section 1. Warning The metal foil sheet used to reinforce gaskets is very thin and sharp. Care should be taken when handling to avoid the possibility of cuts or lacerations to fingers or hands. 4.1 Routine maintenance procedures 24 hours operation After 24 hours service check pipework connections and flange bolts for tightness. - Page 10 4.4 SBRA valve with fusible device (refer to Figures 7 and 8) Replacing or resetting the fuse: Isolate the valve and unscrew the bonnet (see Figure 7). Unscrew the retaining nut and withdraw the valve, valve stem, fuse and spring assembly. The fuse may now be unscrewed from the valve stem and the new one fitted (see Figure 8).
- Page 11 How to replace the bellows assembly Remove the bonnet assembly and the bellows assembly by unscrewing the bellows assembly guide X. Remove the circlip C, washer U, head A and seal B and refit to the new bellows assembly in reverse order. Refit the new bellows assembly and back seal plunger to the valve bonnet.
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Page 12: Spare Parts
5. Spare parts Refer to 'Spare parts' on the relevant Technical Information Sheet as listed in Section 2. IM-S21-01 CH Issue 7...
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