{"id":12079,"date":"2026-05-18T11:57:49","date_gmt":"2026-05-18T09:57:49","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&p=12079"},"modified":"2026-07-02T11:43:33","modified_gmt":"2026-07-02T09:43:33","slug":"fox-bthx-series-flat-diaphragm-bellows-pulsation-dampener","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/fox-bthx-series-flat-diaphragm-bellows-pulsation-dampener\/","title":{"rendered":"FOX BTHX Series Flat Diaphragm \/ Bellows Pulsation Dampener"},"content":{"rendered":"
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The FOX BTHX Series Flat Diaphragm – Bellows Pulsation Damper stands out for the use of high-quality materials, designed for demanding industrial applications<\/span><\/span>. <\/span>The main body of the accumulator is entirely made of AISI 316 L stainless steel, giving the device remarkable strength and long-lasting durability<\/span><\/span>. <\/span>The internal flexible element, available in the dual version as a flat diaphragm or bellows, is made of PTFE, a material commonly known as Teflon<\/span><\/span>. <\/span>The unit integrates as standard a nitrogen valve with 5\/8 UNF thread, essential for managing gas pre-charge<\/span><\/span>. <\/span>To meet specific technical specifications, versions in exotic materials and FDA-certified versions for the diaphragm or bellows can be supplied<\/span><\/span>. <\/span>For pharmaceutical applications, a lapped or electropolished version can be requested to ensure maximum hygiene of the contact surfaces<\/span><\/span>.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Technical Specifications and Operating Principle<\/h3>\n

From an operational standpoint, the BTHX Series is approved to support a maximum working pressure (PS) of 150 bar<\/span><\/span>. <\/span>The testing procedures include a test pressure (PT) calculated by multiplying the working pressure by coefficients of 1.43, 1.3 or 1.5, confirming the high structural safety margin of the component<\/span><\/span>. <\/span>When used specifically as a pulsation damper, calibration plays a decisive role: the nitrogen pre-charge pressure must be strictly maintained within a range between 60% and 80% of the working pressure<\/span><\/span>. <\/span>This calculation must necessarily take into account both the type of pump installed in the hydraulic circuit and the operating temperature of the fluid<\/span><\/span>. <\/span>The mechanical life of the device is inversely proportional to the increase in the compression ratio, making correct initial configuration essential<\/span><\/span>.<\/span><\/p>\n

Installation and Available Variants<\/h3>\n

The mechanical design of the device ensures outstanding mounting flexibility, allowing installation on both horizontal and vertical axes, with the sole requirement of always keeping the nitrogen valve oriented upwards<\/span><\/span>. In addition to the basic configuration, the range includes numerous customisation options on request. Hydraulic connections can be supplied in different variants, including SAE 3000, SAE 6000, ANSI B16.5 and UNI\/DIN flanges, as well as special connections such as API spec. <\/span>6A type 6BX, Autoclave, Grayloc and integrated flange systems<\/span><\/span>. <\/span>Aesthetically and functionally, the external body can receive an epoxy coating in accordance with the standard FOX procedure or according to specific project directives<\/span><\/span>. <\/span>For system architectures operating under extreme conditions, special versions for high pressures and non-standard volumes are available<\/span><\/span>. <\/span>Where the use of stainless steel is not mandatory, the manufacturer also offers the BTH series, characterised by a carbon steel construction<\/span><\/span>.<\/span><\/p>\n

Summary technical table of the main features<\/h3>\n<\/div>\n
<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Feature<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Maximum working pressure (PS)<\/td>\n150 bar<\/td>\n<\/tr>\n
Test pressure (PT)<\/td>\nPS x 1.43 \/ 1.3 \/ 1.5<\/td>\n<\/tr>\n
Body Material<\/td>\nAISI 316 L stainless steel<\/td>\n<\/tr>\n
Diaphragm \/ Bellows Material<\/td>\nPTFE (Teflon)<\/td>\n<\/tr>\n
Standard nitrogen valve<\/td>\n5\/8 UNF<\/td>\n<\/tr>\n
Installation<\/td>\nHorizontal \/ vertical (nitrogen valve facing upwards)<\/td>\n<\/tr>\n
N2 pre-charge pressure (Damper)<\/td>\nFrom 60% to 80% of the working pressure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Product Codes<\/h3>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model<\/th>\nVolume (Lt)<\/th>\nMax Pressure (Bar)<\/th>\nMax N2 Pre-Charge (Bar)<\/th>\nHydraulic Connection<\/th>\nWeight (Kg)<\/th>\n<\/tr>\n<\/thead>\n
BTHX0.06<\/td>\n0.06<\/td>\n150<\/td>\n105<\/td>\n1\/4″ BSP-F<\/td>\n3.9<\/td>\n<\/tr>\n
BTHX0.15<\/td>\n0.15<\/td>\n150<\/td>\n105<\/td>\n3\/4″ BSP-F<\/td>\n5.2<\/td>\n<\/tr>\n
BTHX0.3<\/td>\n0.3<\/td>\n150<\/td>\n105<\/td>\n3\/4″ BSP-F<\/td>\n6<\/td>\n<\/tr>\n
BTHX0.5<\/td>\n0.5<\/td>\n150<\/td>\n105<\/td>\n3\/4″ BSP-F<\/td>\n7<\/td>\n<\/tr>\n
BTHX0.7<\/td>\n0.7<\/td>\n150<\/td>\n105<\/td>\n” BSP-F<\/td>\n8<\/td>\n<\/tr>\n
BTHX1<\/td>\n1<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n11<\/td>\n<\/tr>\n
BTHX1.5<\/td>\n1.5<\/td>\n150<\/td>\n105<\/td>\n1 1\/2″ BSP-F<\/td>\n13<\/td>\n<\/tr>\n
BTHX2.5<\/td>\n2.5<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n15<\/td>\n<\/tr>\n
BTHX3<\/td>\n3<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n19<\/td>\n<\/tr>\n
BTHX4.5<\/td>\n4.5<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n24<\/td>\n<\/tr>\n
BTHX6.5<\/td>\n6.5<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n35<\/td>\n<\/tr>\n
BTHX10<\/td>\n10<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n45<\/td>\n<\/tr>\n
BTHX12<\/td>\n12<\/td>\n150<\/td>\n105<\/td>\n1-1\/2″ BSP-F<\/td>\n54<\/td>\n<\/tr>\n
BTHX15<\/td>\n15<\/td>\n150<\/td>\n105<\/td>\n3″ BSP-F<\/td>\n68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

The FOX BTHX Series Flat Diaphragm – Bellows Pulsation Damper is designed to ensure maximum performance in high-precision hydraulic systems. Made with a robust AISI 316 L stainless steel body and equipped with a PTFE (Teflon) diaphragm or bellows, it offers excellent chemical and mechanical reliability. This component supports a maximum working pressure of 150 bar and features a standard 5\/8 UNF nitrogen valve, allowing both horizontal and vertical installation, provided that the valve is facing upwards. Available models: BTHX0.06, BTHX0.15, BTHX0.3, BTHX0.5, BTHX0.7, BTHX1, BTHX1.5, BTHX2.5, BTHX3, BTHX4.5, BTHX6.5, BTHX10, BTHX12, BTHX15.<\/p>\n","protected":false},"featured_media":12146,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[99,459],"product_tag":[260],"class_list":{"0":"post-12079","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-accumulators","7":"product_cat-pulsation-dampener","8":"product_tag-fox","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"\nFOX BTHX Pulsation Dampener \u2013 LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"FOX BTHX Series Flat Diaphragm \/ Bellows Pulsation Dampener in AISI 316 L stainless steel. Max pressure 150 bar. 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