{"id":700,"date":"2020-08-04T12:15:31","date_gmt":"2020-08-04T15:15:31","guid":{"rendered":"https:\/\/www.pianola.ca\/?p=700"},"modified":"2020-08-04T12:15:31","modified_gmt":"2020-08-04T15:15:31","slug":"primary-pouch-board","status":"publish","type":"post","link":"https:\/\/www.pianola.ca\/?p=700","title":{"rendered":"primary pouch board"},"content":{"rendered":"\n

Since I have recently discussed the secondary pouch board<\/a>, I will endeavor to avoid redundancy and keep it short for this post.<\/p>\n\n\n\n

The main difference with a primary pouch board is that it will have a row of \u201cbleeds\u201d; brass cups which bleed a tiny amount of suction back into the area underneath the pouch, to ensure prompt resetting of the valve after the atmosphere signal is cut off.<\/p>\n\n\n\n

The bleed cups may be in good condition, or they may be tarnished or even corroded.
If they are damaged or corroded, they should be replaced; if they are simply cosmetically tarnished, then the main thing is to ensure that the bleed hole is clear and functional, and that the seal around the cup is still good.<\/p>\n\n\n\n

The bleeds are indicated by the green arrow in the following image:<\/p>\n\n\n\n

\"\"
Primary pouch board, foreground<\/figcaption><\/figure>\n\n\n\n

The red arrow indicates that the last pouch is lifting away from the board, at its edge.
Check the pouches for damage or lifting such as this, and repair accordingly.<\/p>\n\n\n\n

As with the secondary, check that the pouches are tight (covering each bleed in turn), and that the channels are all sealed independently.<\/p>\n<\/body>","protected":false},"excerpt":{"rendered":"

Since I have recently discussed the secondary pouch board, I will endeavor to avoid redundancy and keep it short for this post. The main difference with a primary pouch board is that it will have a row of \u201cbleeds\u201d; brass cups which bleed a tiny amount of suction back into the area underneath the pouch, … Continue reading primary pouch board<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-700","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4SLED-bi","_links":{"self":[{"href":"https:\/\/www.pianola.ca\/index.php?rest_route=\/wp\/v2\/posts\/700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pianola.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pianola.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pianola.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pianola.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=700"}],"version-history":[{"count":1,"href":"https:\/\/www.pianola.ca\/index.php?rest_route=\/wp\/v2\/posts\/700\/revisions"}],"predecessor-version":[{"id":702,"href":"https:\/\/www.pianola.ca\/index.php?rest_route=\/wp\/v2\/posts\/700\/revisions\/702"}],"wp:attachment":[{"href":"https:\/\/www.pianola.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pianola.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pianola.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}