{"id":5257,"date":"2025-09-15T15:49:57","date_gmt":"2025-09-15T07:49:57","guid":{"rendered":"https:\/\/www.shopvalves.com\/?post_type=product&p=5257"},"modified":"2025-09-15T22:07:45","modified_gmt":"2025-09-15T14:07:45","slug":"spirax-sarco-ws4","status":"publish","type":"product","link":"https:\/\/www.shopvalves.com\/en\/product\/spirax-sarco-ws4\/","title":{"rendered":"Spirax Sarco Spirax Sarco WS4 Water Seal Tanks"},"content":{"rendered":"

Spirax Sarco Spirax Sarco WS4 Water Seal Tank, WS4 is used with DRV or DEP when the medium temperature is higher than the actuator's operating range. The WS4-3 is recommended when pressure or load changes rapidly during application.<\/p>\n

Available Models<\/h3>\n\n\n\n\n\n\n
Available types<\/th>\nApplicable Scenarios<\/th>\nquantitative (science)<\/th>\n<\/tr>\n<\/thead>\n
WS4<\/td>\nGeneral Applications<\/td>\n1 liter<\/td>\n<\/tr>\n
WS4-3<\/td>\nUse when pressure or load changes rapidly<\/td>\n3 liters<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Sizes and pipe connections<\/h3>\n\n\n\n\n\n\n\n\n
Connection type<\/th>\nAvailable types<\/th>\nImported threads<\/th>\nOutlet thread<\/th>\n<\/tr>\n<\/thead>\n
whorl of fingerprint<\/td>\nWS4<\/td>\n\" BSP male thread BS 21, \u00bd\" NPT male thread<\/td>\n\" BSP female BS 21 with 8 mm compression connection<\/td>\n<\/tr>\n
whorl of fingerprint<\/td>\nWS4-3<\/td>\n\u00bd\" BSP male BS 21, \u00bd\" NPT male threads<\/td>\n\" BSP female BS 21 with 8 mm compression connection<\/td>\n<\/tr>\n
butt welding<\/td>\nWS4<\/td>\nDN10<\/td>\n-<\/td>\n<\/tr>\n
butt welding<\/td>\nWS4-3<\/td>\nDN15<\/td>\n-<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Pressure\/Temperature Limits<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
sports event<\/th>\nparticulars<\/th>\n<\/tr>\n<\/thead>\n
Valve body design conditions<\/td>\nPN25<\/td>\n<\/tr>\n
Maximum design pressure<\/td>\n25 bar g @ 120 \u00b0C<\/td>\n<\/tr>\n
Maximum design temperature<\/td>\n225 \u00b0C @ 21 bar g<\/td>\n<\/tr>\n
Minimum design temperature<\/td>\n0 \u00b0C<\/td>\n<\/tr>\n
Maximum operating saturated steam pressure<\/td>\n21 bar g<\/td>\n<\/tr>\n
Maximum working temperature<\/td>\n225 \u00b0C @ 21 bar g<\/td>\n<\/tr>\n
Minimum operating temperature (Note: below this operating temperature, please consult Spirax Sarco)<\/td>\n0 \u00b0C<\/td>\n<\/tr>\n
Design maximum cold hydraulic test pressure<\/td>\n40 bar g<\/td>\n<\/tr>\n
Note:After the internal components have been installed, the test pressure should not exceed<\/td>\n25 bar g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

material (that sth is made of)<\/h3>\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nPart<\/th>\nmaterial (that sth is made of)<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\ncasings<\/td>\nCarbon steel DIN 1614 St W24<\/td>\n<\/tr>\n
2<\/td>\nterminal (electrical engineering)<\/td>\nsteel (chemistry)<\/td>\n<\/tr>\n
3<\/td>\npipe fitting<\/td>\nGalvanized carbon steel<\/td>\n<\/tr>\n
4<\/td>\nstopper<\/td>\nsteel (chemistry)<\/td>\n<\/tr>\n
5<\/td>\ncylinder<\/td>\nCarbon steel DIN 1629 St 52<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

weights<\/h3>\n\n\n\n\n\n\n
Available types<\/th>\nWeight (kg)<\/th>\n<\/tr>\n<\/thead>\n
WS4<\/td>\n1.6<\/td>\n<\/tr>\n
WS4-3<\/td>\n5.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Spare parts available<\/h3>\n

Part 3 - Pipe Fitting<\/p>\n

Ordering Instructions<\/h3>\n

Example: 1-WS4 watertight tank, BSP \" WS4 Screwed.<\/p>","protected":false},"excerpt":{"rendered":"

Spirax Sarco Spirax Sarco WS4 Water Seal Tank, when the medium temperature is higher than the use range of the actuator, WS4 and DRV or DEP with the use of...<\/p>","protected":false},"featured_media":5270,"template":"","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[24],"product_cat":[103,50],"product_tag":[62,65],"class_list":{"0":"post-5257","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-spirax-sarco","7":"product_cat-pressure-reducing-and-surplussing-valves","8":"product_cat-control-systems","9":"product_tag-spiraxsarco-safety-valves","10":"product_tag-spiraxsarco-valves","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple","16":"entry","17":"content-bg","18":"loop-entry"},"_links":{"self":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product\/5257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/media\/5270"}],"wp:attachment":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/media?parent=5257"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_brand?post=5257"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_cat?post=5257"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_tag?post=5257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}